WO2014111507A1 - Canal-sealing means - Google Patents

Abstract

The present invention relates to the sealing of canals. In order to provide a sealing means which is intended for a canal in the water-channelling state and is suitable even for relatively large throughflow quantities and requires the lowest possible outlay, a canal-sealing system (10) with a placing apparatus (16) and an introduction apparatus (18) is provided. The placing apparatus is designed to place a web-like mat material (20) on a first region of a water surface of a canal, wherein the web-like mat material is formed, at least in part, with cavities (22) for accommodating a carrying material. The introduction apparatus is designed to introduce carrying material (24) into at least some of the cavities, for gradual lowering of the web-like mat material until it bears on a bottom surface (26) of the canal.

Description

 CANAL SEALING

The present invention relates to the sealing of channels in a water-bearing state, and more particularly relates to a channel sealing system for sealing a channel in a water-bearing state, a channel section, a method for sealing a channel in a water-bearing state, and the use of a system for sealing a channel.

Channels are used, for example, to guide or direct water

transport, for example, to supply water to a hydroelectric power plant.

Channels are also known for transporting water for other purposes, such as irrigation or for the transport of drinking water.

In addition, canals are also known as waterways. In order to avoid or reduce the loss of water, for example by seeping into the adjacent areas of the earth, sewer seals are used in the area of

Channel bottom surface, e.g. along the canal floor and the lateral

Slope surfaces provided. For example, geomembranes are applied to trough constructions made of concrete to enclose the channel

 Duct seals are also used to subsequently seal existing channels, or to renew existing seals or

mend. For this purpose, for example, a geomembrane is applied to the existing boundary surfaces, including, for example, the channel first

is drained to hang up the geomembranes and connect to each other can. However, it has been shown that the draining, or the partial removal of water is problematic, since it is associated on the one hand with a relatively high cost, and on the other hand, a relatively long

Interruption during operation of the channel means. Another problem can also arise in directly adjacent buildings or structures, as it may come here due to the different pressure conditions in a drained channel section to changes in the adjacent earth, which in turn can lead to damage to buildings or structures. From DE 202008014492 Ul, for example, a method is known in which a

Channel seal is first composed of individual segments outside the water and then with the help of a generated

Differential water level is lowered into the water on the surfaces to be sealed. This method is suitable for sealing a channel in a water-bearing state. The lowering by means of a differential water level is used in addition to stagnant water for flowing waters, at least to some extent of water flow.

There is a need to provide a sealing of a channel in a water-bearing state available, which can be used even at higher flow rates and which is associated with the least possible effort

This object is achieved by the channel sealing system for sealing a channel in water-bearing state, through the channel section, by the method for sealing a channel in water-bearing state and by the

Use of a system according to any one of the independent claims achieved Exemplary embodiments are set forth in the dependent claims

According to the invention, there is provided a channel sealing system for sealing a channel in a water-bearing state, which has a dispensing device and an introduction device. The dispensing device is formed sheet mat material on a first portion of a water surface of a channel, wherein the sheet-like mat material is at least partially formed with cavities for receiving a support material. The dispensing device is designed to introduce carrier material into at least part of the cavities for a successive lowering of the web-shaped web

Mat material until it rests on a channel base.

The provision of a mat material on the water surface and the

Subsequent lowering by means of the support material offer the advantage that the channel in its operation, in particular in its water flow, must not be limited. The use of a support material for lowering can be done by simple measures. The support material is used in addition to lowering but also to hold the sheet-like mat material, for example, acts as a seal, fixed to the surfaces to be sealed permanently. The

Introduction of the carrier material into the cavities serves e.g. In addition, during the lowering process, the water flowing past (during canal operation) can not wash away the carrier material.

The term "sewer" also includes other aquiferous structures and

aquatic bodies of water, and in particular also standing waters,

Water tank or water storage tank.

For example, the sheet-like mat material is applied in a partial region of the channel cross-section and also lowered only in a partial region. In one example, the material is spread up to half of the channel, with flowing water a separate bracket for that in the channel area

protruding mat end is provided For example, the term "first area" refers to the entire

Channel cross-section, i. in another example, the bladelike

Mat material Spread over the entire cross-section and lowered. In one example, the dispensing apparatus is configured to deploy the sheet-like mat material on the water surface, wherein the cavities i) are unfilled, or ii) are at least partially filled with air.

The term "mat material" refers to a material that is flat and has cavities, the cavities being partially connected, for example. For example, the mat material is lighter than water and floats on the water without further action. In another example, cavities are provided that contain air to create a buoyant force. For example, the mat material is heavier than water.

The term "support material" refers to a material which causes a lowering of the sheet-like material and which, for example, performs a structural function in its final state. Instead of the term "support material", the terms "support material" or "filler material or absorbent material" are used.

According to one example, the sheet-like mat material is a

Concrete formwork cover with a variety of cavities for receiving the

Supporting material. The support material is provided as i) hardening mixture and / or ii) bulk material or bulk material.

The hardening mixture is for example a concrete material. The bulk material is, for example, sand, gravel or gravel. In another example, bentonite is used, eg with or without other materials as additive e). The term "concrete shuttering shroud" refers to a mat-like material which, like a quilt, has at least one interstice which serves as a

Cavity can be filled with a filler. To increase the stability of the cavity may have subdivisions. Concrete formwork casings are known as structural elements for building in water, e.g. for fixing dams. There are two interconnected, e.g. interwoven, fabric provided, e.g. Synthetic fabrics, for example, serve as a formwork for the introduced concrete or mortar. In the filled and set condition, the mat-shaped concrete formwork envelope is, for example, of a relatively uniform thickness. The concrete formwork sheath serves as a lost formwork. In another example, two spaced apart walls, which are the

Cavity, connected to connection areas, e.g. through bulkheads or spacers made of tension elements and / or pressure elements. When

Concrete formwork envelope, for example, two plastic sealing strips (KDB) in places interconnected to form between cavities. As Betonschalungshüllen example Incomat® mats of the company

HUESKER Synthetic GmbH or Colcrete® concrete mats from Colcrete-von Essen GmbH & Co. KG. Of course, other products from other manufacturers can be used.

The introduction device is for example a delivery device of concrete.

According to one example, the dispensing device is formed below the sheet-like mat material, a sheet-like sealing material

to arrange.

According to one example, the dispensing device is configured to deploy the sheet-like mat material and / or the sheet-like sealing material with lateral upstands on the water surface such that a trough-shaped basin with a peripheral edge is formed, wherein the edge above a In addition, a connecting device is provided, which is designed to form a connection between the trough-shaped basin and the surrounding water level.

The tub-shaped basin is also referred to as a trough-shaped receiving basin or sink.

According to one example, the dispensing device has a holding device, which is formed the sheet-like mat material and or the sheet-like

Keep sealing material between two opposite bank areas of the canal. The sheet-like mat material and / or the sheet-like

Sealant are on the water or are at least partially immersed in the water

In one example, the retainer is configured to increase the retained length of the sheet-like mat material and / or the sheet-like sealing material during lowering, i. to loosen the stops during lowering, e.g. with rope winches, so that the material can slip into the channel cross-section.

According to one example, at least one buoyancy element is provided, which acts with a buoyant force on the sheet-like mat material, wherein the

Buoyancy of the at least one buoyancy element for the successive lowering can be reduced

As an example, in the sheet-like mat material

Provided buoyancy cavities, which are filled with air and which provide the buoyancy force. For the successive lowering is one

Provided valve device for discharging the air. In one example, some of the cavities for receiving the support material are filled with air, rather than support material. For example, the Aufoiebshohlräume are formed as air hoses The air hoses may also be provided in addition to the cavities for receiving the support material.

For example, the buoyant cavities are below the web

Mat material provided.

In one example, the sheet-like sealing material with the

Training room trained. For example, a geomembrane, e.g. a plastic waterproofing membrane (KDB), with integrated buoyancy cavities.

In another example, the sheet-like mat material and the sheet-like sealing material are formed with the buoyant cavities

In another example, the buoyant cavities are below the

sheet-shaped sealing material provided as a separate structure.

According to one example, a stabilizing device is provided to at least extend the sheet-like mat material during lowering

To keep flow direction.

The stabilizer device is, for example, a transversely to the flow direction profile, on which an upstream edge of the sheet-like mat material is held. In one example, the stabilizing device is provided to hold the sheet-like mat material during lowering in height. The profile is held, for example, on the channel bottom or on the channel sides. The profile is kept movable, for example, in height. In one example, the tread is attached to an excavator which is floating on a pontoon in the channel to maintain the profile variable in height and attitude during lowering. According to the invention, a channel section is provided which has lateral and lower channel boundary surfaces, a water level and sheet-like mat material. The sheet-like mat material is provided for sealing at least portions of the channel boundary surfaces and is at least partially formed with cavities for receiving a support material for a successive lowering of the sheet-like mat material to rest on one

 Channel base surface. The sheet-like mat material is arranged floating on the water level.

For example, the water level is an operating water level. The term

"3 Operation Water Level" refers to a level of water that occurs during normal operation, that is within the normal range

Fluctuations. For example, in an example, the term "operating water level" excludes levels of water arising from service or repair related stagnation or deflagration In another example, the term "service water level" includes those water levels that are above a minimum water level set for the channel, So also by the operation or service work-related short-term increase in the water level.

In another example, a channel sealing system according to any one of the preceding examples is provided in the channel section.

According to the invention, a channel section is also provided which has lateral and lower channel boundary surfaces and a water level, as well as a

Channel sealing system according to one of the previously described examples of a channel sealing system. According to the invention, a method for sealing a channel in

water-bearing condition with the following steps:

a) applying a sheet-like mat material on a first region of the water surface of the channel, wherein the sheet-like mat material for receiving a support material is at least partially formed with cavities;

b) introducing the support material into at least a part of

cavities; and

c) successive lowering of the sheet-like mat material up to the

Edition on a channel base.

In one example, a concrete material is used as the support material. Of the

Concrete material is for example a delayed-setting concrete. In one

For example, the sheet-like mat material is a flexible concrete shell cover having a plurality of cavities for receiving a concrete material.

According to one example, a sheet-like sealing material is placed beneath the sheet-like mat material. In one example, the sheet-like sealing material is applied before step a) in another

For example, the sheet-like sealing material in step a) is applied together with the sheet-like mat material. The sheet-like sealing material consists, for example, of a plurality of strips of a sealing material, e.g. made of several interconnected geomembranes. The web-shaped

Sealing material is bonded, for example, to the sheet-like matting material, e.g. with a double-sided adhesive tape, with silicone, with enamel strips or with Velcro fasteners. The connection takes place, for example, before deployment. In another example, the connection occurs during the

Land application. The connection can also be made after spreading. As the sheet-shaped sealing material, a sheet Z-sheet material is used lighter than water according to one example so that it is able to support the sheet-like mat material in an unfilled state.

According to one example, in step a), the sheet-like mat material and / or sheet-like sealing material, which is below the baby-shaped

Mat material is arranged, so applied with lateral Aufkantungen that a trough-shaped basin with a peripheral edge and a

Base area is formed. The border is above a surrounding

Water level of the sealed channel arranged. After step b), a connection between the trough-shaped basin and the surrounding

Water level formed.

The lateral Aufkantungen are so large that the trough-shaped basin generates enough lift to the sheet-like mat material with

to wear introduced support material.

In one example, two opposite edges of the sheet-like mat material and / or the sheet-like sealing material lie on lateral slope areas above the water level, for example on dam crowns, and the end faces are folded up so that the basin is formed. For example, the term "faces" here refers to the joints (edges of joints) between the opposite bank areas, and does not refer to any narrow shape. For example, by making the connection, water runs into the area of the basin, causing it to sink Example is provided as a connection a fold-down or depressible edge segment. The connection between the basin and the surrounding water level, for example, in addition to the lowering of the edge, alternatively or additionally, by the principle of a communicating tube with a pipe connection. For example, only the support material can be introduced before the lowering takes place, for example, by the already mentioned flooding of the trough-shaped basin.

In another example, the introduction of the support material and the successive lowering occur simultaneously, e.g. also by more or less simultaneous flooding of the tub-shaped basin.

According to one example, it is provided that, in step b), carrier material is introduced into the sheet-like mat material in a middle region, the middle region being provided as a channel sole cover. After step c) lateral areas of the sheet-like mat material are filled with the support material, wherein the lateral areas abut on lateral embankment areas, or come to rest.

According to one example, it is provided that steps a) to c) are repeated, wherein in the repetition in step a) the sheet-like mat material is thus applied to a second area of the water surface of the channel, and in step c) the lowering takes place in such a way, that successively a full-surface

Channel sealing occurs For example, the arrangement of adjacent segments overlaps. For this purpose, e.g. Overlap segments formed on the sheet-shaped mat material and / or the sheet-like sealing material.

In one example, the joints are shed on the faces after or during the lowering with concrete. According to the invention, the use of a system according to one of the above-described examples for sealing a channel is also provided. In another example, a web-shaped channel seal, eg a

Plastic waterproofing membrane (KDB) laid and welded from a dam crest over a floating pontoon to the opposite dam crest Then, for example, an Incomat® mat (or other product) is laid over the duct sealing strip and connected to the KDB. This process is repeated, for example, until a manageable length of 30 to 50 meters is completed. The system is temporarily secured on the crowns. After completion of a section, the end faces are folded so that there is a side-closed system in the form of a trough relative to the surrounding water. In a next step, the Incomat® mat is placed in the bottom area, i. in the area above the culvert, filled with concrete. Then the trough is flooded. As soon as the end faces are overflowed, the sealing system can sink by gravity to the ground. The aforementioned fuse, which is made adjustable, loosened during the lowering process,

for example by means of winches, so that the required additional demand

Gaskets, or the required extra length by the development of the channel profile of the perineal crowns "slipping." The longitudinal side fuses are loosened controlled to achieve a uniform lowering After the Incomat® mat in the bottom area has come to rest, with For example, this can be done in several steps: The joints on the faces of the individually lowered units are, for example, overlapped and can be potted with concrete to produce a full-surface channel seal. According to the invention it is provided as an advantage that during the lowering process in the channel water can still be removed, since it is not required. create a "Absperrdamm", as required for example when draining a channel In the case of waterways, it may be necessary to interrupt any existing ship operation, at least briefly, to deploy and lower the geomembranes. In case of unforeseen events, the lowering process can be stopped at any time, since the sealing system is arranged more or less parallel to the flow direction. For example, when operating a power plant, this also permits a sudden discharge of larger ones

Amounts of water. The water can then be above and below the

 Sealing system flowed past. By combining the channel sealing sheet with a concrete formwork envelope, e.g. an Incomat® mat, becomes one

Double seal provided, each element by itself meets the required sealing properties If, for example, one of the two elements fail, the other element can take over the sealing function. As already mentioned, it is provided in one example that the duct sealing strip assumes the function of a basic carrier and serves as permanent formwork

In one example, a channel sealing system is provided for sealing a channel in a water-bearing state, wherein an ambringing device and a delivery device are provided. The dispensing apparatus is configured to apply a sheet-like flexible concrete formwork sheath having a plurality of cavities for receiving a concrete material on a first portion of the water surface of a channel. The dispensing device has a holding device which is adapted to hold at least the concrete formwork sheath between two opposite bank areas of the channel, wherein the

Betonschalungshülle partially immersed in the water. The

Einbringvorrichtung is designed to introduce a concrete material in at least a portion of the cavities in a central region of the concrete formwork shell for a successive lowering of the concrete formwork cover to rest on a Channel base, wherein the central region is provided as a channel sole cover. The introduction device is designed to introduce the concrete material into at least a portion of the cavities in lateral regions of the concrete formwork envelope, wherein the lateral areas abut against lateral embankment areas of the channel.

The provision of a flexible concrete formwork envelope serves, on the one hand, to provide a seal which can first be laid out or provided there on the surface of the water. By the concrete material, which is introduced into the cavities of the concrete formwork envelope, on the one hand, the lowering of the seal is achieved at the surfaces to be sealed. On the other hand, the concrete material also serves to secure the seal safely and permanently. The use of concrete has the advantage that here first a liquid, or

viscous, so flexible material is provided, which can be easily handled, for. for insertion, and also adapts to different shapes, for example, during lowering. Also on the base, or on the lateral slope surfaces, the use of concrete has the advantage that here a "snuggling" of the existing

Surface structures, or surface profiling takes place, so that the seal rests as well as possible on the surfaces to be sealed. After adaptation to the substrate, the concrete can set and harden to ensure a reliable hold. In addition, the concrete also provides further protection of the underlying areas of the seal.

In one example, the dispensing device is formed below the

Betonschalungshülle to arrange a sheet-like sealing material.

In one example, the dispensing device is adapted to deploy the concrete formwork sheath and / or the sheet-like sealing material with lateral upstands on the water surface such that a tub-shaped pool is formed with a peripheral edge, wherein the edge above a surrounding Water level of the sealed channel is arranged. In addition, a connecting device is provided, which is designed to form a connection between the trough-shaped basin and the surrounding water level. In one example, at least one buoyancy element is in the form of a

 Provided onWebshohlraums, wherein the buoyant cavity is filled with air and on a stroke force provides that temporarily on the

Concrete formwork shell acts. For the successive lowering is one

Valve means for discharging the air provided to reduce the buoyancy force.

In one example, a stabilizer device is provided to prevent the

Keep Betonschalungshülle during lowering at least in the flow direction.

In one example, a method is provided for sealing a channel in a water-bearing state, comprising the following steps:

a) applying a Betonschalungshülle on a first portion of the water surface of the channel, wherein the concrete formwork envelope is at least partially formed with cavities for receiving a concrete material;

b) introducing concrete material into at least part of the

Cavities in a central region of the concrete formwork envelope, wherein the central region is provided as a channel sole cover

c) successive lowering of the concrete shuttering sheath to rest on a channel base surface; and

d) placing the concrete material in lateral areas of the

Concrete formwork cover, which abut on lateral embankment areas of the channel.

In one example, steps a) to d) are repeated, and in the repetition in step a), the concrete formwork sheath is laid on a second area of the shed Water surface of the channel discharged, and in step c), the lowering is carried out such that successively a full-surface channel seal is formed.

According to one aspect of the invention, it is provided that initially as

Seal provided sheet material is applied to the water surface of a water-bearing channel. To bring the sealing material to be sealed to the channel boundary surfaces, a

Weighting provided, which causes a lowering due to its weight, so that the sealing surfaces bear against the surfaces to be sealed. In addition to the lowering, the weighting material used also serves to securely hold the sealing segments to the respective surfaces to be sealed. For example, a concrete material is provided for this purpose, which is initially in a liquid or viscous, ie flexible state, and the lowering effected in a lowered position under water, the viscous material will initially adapt to an existing surface structure or profiling, so the

Sealing membrane as far as possible over the entire surface to be pressed on the surfaces to be sealed. Subsequently, the concrete material can harden to ensure an even better grip on the geomembrane. In the example mentioned combining a geomembrane with additional sheet-like sheaths for receiving the

 Supporting material serves the sealing sheet together with the sheaths as redundant seals, i. an additional waterproofing protection is provided. In addition, the waterproofing membrane resting on the water can also be used as a kind of working platform for deploying the support material.

It should be noted that the features of the examples of the system, ie the device, also apply to embodiments of the channel section and the method and vice versa, as well as for the use of the system, ie the device. In addition, those features can be freely combined with each other, where this is not explicitly mentioned, wherein synergistic effects that go beyond the addition of the various features.

The following will become apparent from the accompanying drawings

Embodiments of the invention received. Show it:

Fig. 1 shows a schematic cross section through an example of a

 Duct sealing system for sealing a channel in a water-bearing state;

Fig. 2 shows an example of a concrete formwork sheath in a perspective

 View;

 3 shows an example of a sheet-like mat material in combination with a sheet-like sealing material in a schematic cross section through a channel sealing system in a cutout; Fig. 4 is an isometric sectional view in a longitudinal section through a

 Duct sealing system with side upstands;

 Fig. 5 shows an example of a sewer sealing system with a

 Holder;

 6 shows a schematic section through a channel sealing system in a cutout;

 Fig. 7 shows an example of a sheet-like mat material with

 Buoyant cavities in a cross section in FIG. 7A and in a longitudinal section in FIG. 7B;

8 shows an example of a channel sealing system in a longitudinal section with a stabilizing device;

 9 shows an example of a channel section in a cross section.

 10 shows an example of a method for sealing a channel in FIG

 water-bearing condition;

11 shows another example of a method for sealing a channel in the water-bearing state; and Fig. 12 shows another example of a sealing of a channel in a first step in a longitudinal section in Fig. 12A, in various

 Intermediate steps in cross section in Figs. 12B, 12C, 12D and 12E, and in a final state in Fig. 12F.

Fig. 1 shows a channel sealing system 10 for sealing a channel 12. The channel 12 has, for example, a water-precipitated area, the upper edge of water is designated by reference numeral 14. The channel, as well as the water surface 14, is shown in dashed line, since these are not more immediate components of the system. The channel sealing system further comprises an application device 16 and a delivery device 18. The

Dispenser 16 is adapted to apply a sheet mat material 20 to a first portion of a water surface of a channel. The sheet-like mat material 20 is at least partially formed with cavities 22 for receiving in this support material. The delivery device 18 is configured to transfer support material 24 into at least a portion of the cavities

bring in, and thus a successive lowering of the Bahnförrnigen

Mats material 20 to rest on a channel base. The lowering is indicated by a lowering arrow 28. In addition to the channel base 26, the channel 12 is also formed with two lateral slope slopes 30, on which also when lowering the sheet-like mat material 20 is applied.

Fig. 2 shows an example of the sheet-like mat material 20, in which a concrete formwork envelope 32 is provided with a plurality of cavities 34 for receiving the support material. As a support material, for example, a curing mixture or a bulk material or bulk material is provided. The curing mixture is for example a concrete material 36. For example, the

Cavities 34 by foreclosures 38, or stitching, separated from each other. In Fig. 3, an example is shown in which below the web-shaped

Matt material 20 a sheet-shaped sealing material 40 is provided.

For example, the dispensing device 16 is formed to dispose below the sheet-like mat material 20 the sheet-shaped sealing material 40 (not shown in detail). As shown in Fig. 4, it is provided in an example that the

Spreading device 16 (not shown) is adapted to deploy the web-shaped mat material 20 and / or the sheet-like sealing material 40 with lateral upstands 42 on the water surface 14 so that a trough-shaped basin 44 is formed with a peripheral edge 46, wherein the edge above a surrounding water level 48 of the sealed channel 14 is arranged. In addition, a connecting device 50 is provided, which is provided to form a connection between the trough-shaped basin 44 and the surrounding water level 48.

The sheet-like mat material 20 rests, for example, on dam crown areas 33 provided laterally of the channel. In Fig. 4, a first diagram 31 indicates the channel boundary surfaces, e.g. adjacent soil or one

Concrete support structure in the form of a trough; a second screw 29 indicates the water level, or the amount of water within the channel.

In another example, shown in FIG. 5, the dispenser 16 includes a retainer 52 that is configured to form the sheet-like mat material 20, and / or the sheet-like sealing material 40 between two opposing bank areas, for example, in the crown areas 33 of the channel 12 to hold. The sheet-like mat material 20 and / or the sheet-shaped sealing material 40 rest on the water 14 or are at least partially embedded in the water. The water is identified by reference numeral 54. In Fig. 5 is the solid line 56 of the Initial state shown in which the material rests on the water, and with a dashed line 58, the final state when the web-shaped

For example, the holding device 52 has two roll-up devices 60 arranged on the dam crown areas in order to unroll further strip material from a roll 62 during the lowering, as indicated by reference numeral 64. This makes it possible, during the lowering, to increase the length of the sheet-like mat material 20 and / or of the sheet-like sealing material 40 so that the material can slip into the channel cross-section.

In Fig. 6 an embodiment is shown in which at least one

Buoyancy element 70 is provided, which acts with a buoyancy force 72 on the sheet-like mat material 20, wherein the buoyancy force of the at least one buoyancy element for a successive lowering, for example, the lowering 28 is reducible

As another example, buoyant cavities 74 filled with air and providing the buoyant force are provided in the sheet-like mat material, as shown in FIG. 7A in a cross-section through the sheet-like mat material 20 and in a fragmentary longitudinal section in FIG. 7B For the successive lowering is, for example, a

Valve means 76 provided for discharging the air. For example, the buoyant cavities 74 are formed as air hoses 78.

In Fig. 8, an example is shown in a longitudinal section, wherein the

Duct sealing system 10 is provided with a stabilizing device 80 to hold the web-shaped mat material 20 during the lowering 28 in at least one flow direction 82. For example, the

Stabilization device 80 a transverse to the flow direction profile on an upstream edge of the sheet-like mat material 20 is held, which is indicated by a stop line 83. The stabilizing device 80 may be kept movable, for example, in height, which is indicated by a double arrow 84. This makes it possible, even with larger flow rates, ie larger or higher flow rates, for example in lateral upstands and a trained trough-shaped basin 44 the

To keep web-shaped mat material 20 in the right place temporarily and also to ensure the reliable hold during the lowering process, or to be able to control the position when placing or lowering.

FIG. 9 shows a channel section 100 with lateral channel boundary surfaces 102 and lower channel boundary surface 104. In addition, lateral embankment areas in the form of dam crown areas 106, for example, or other border areas are also provided. In addition, a water level 108 is provided, as well as a sheet-like mat material 110. In the web-shaped

Mat material 110 is, for example, the sheet-like

Mat material 20 already described with reference to the preceding figures. The sheet-like mat material 110 is provided for sealing at least portions of the channel boundary surfaces and is at least partially formed with cavities 112 for receiving a support material 114 for successively lowering 116 the sheet-like mat material 110 to the overlay on a canal floor, for example the lower one

Channel boundary surface 104. In this case, the sheet-like mat material 110 is arranged floating on the water level 108

In a further, not shown embodiment, a channel section is provided, with lateral and lower channel boundary surfaces and a water level. In addition, a channel sealing system according to one of

previously described examples of the channel sealing system 10 is provided. 10 shows an example of a method 200 for sealing a channel in a water-bearing state, in which the following steps are provided: In a first step 210, a sheet-like mat material is applied to a first region of the water surface of the channel, wherein the sheet-like mat material for receiving a support material at least partially with

 Cavities is formed. In a second step 212, the carrier material is introduced into at least part of the cavities. In a third step 214, a successive lowering of the sheet-like mat material is provided until resting on a channel base. The first step 210 is also referred to as step a), the second step 212 as step b) and the third step 214 as step e).

For example, a concrete material is used as the support material, and as a sheet-like mat material a flexible concrete formwork envelope with a plurality of cavities for receiving the concrete material.

In a further exemplary embodiment (not shown), a sheet-like sealing material is arranged below the sheet-like mat material. For example, it is provided in step a) that the sheet-like mat material and / or sheet-like sealing material, which is arranged below the sheet-like mat material, is applied with lateral Aufkantungen so that a trough-shaped basin is formed with a peripheral edge and a base, wherein the edge above a surrounding

Water level of the sealed channel is arranged. After step b), a connection is formed between the trough-shaped basin and the surrounding water level in order to carry out the lowering operation.

According to another example (not shown) it is provided that in step b) in the sheet-like mat material in a central region support material The middle area is provided as a channel sole cover. After step c), lateral areas of the sheet-like mat material are filled with the carrier material which bear on lateral embankment areas. In a further example, it is provided that steps a) to c) are repeated, which is indicated in FIG. 10 by a dashed arrow 215

Repetition is shown in FIG. 10 as a possible option and is not to be understood as a mandatory feature of the examples described above. In the repetition, it is provided that in step a), the sheet-like mat material is applied to a second area of the water surface of the channel, and in step c) the lowering takes place such that successively a full-surface channel seal is formed.

11, there is shown another example of the method 200 in which a first step 210 'is provided in which a concrete formwork roll is applied to a first portion of the water surface of the channel, the concrete formwork envelope at least partially having cavities for receiving a concrete material In a second step 212 ', concrete material is introduced into at least part of the cavities in a central area of the concrete formwork envelope, the middle area being provided as a

 Channel bottom cover is provided. In a third step 214 ', a successive lowering of the concrete formwork envelope takes place with for laying on a

Channel base surface. In a fourth step 216, an introduction of the

Concrete material in lateral areas of the concrete formwork envelope, which bear against lateral embankment areas of the channel. The first step 210 'is also referred to as step a), the second step 212' as step b), the third step 214 'as step c) and the fourth step 216 as step d).

As an option, it is provided in a further example that the steps a) to d) are repeated, which is indicated by a dashed arrow 217. In the Repetition is in step a) the concrete shuttering shell so applied to a second area of the water surface of the channel, and in step c), the lowering is carried out such that successively a full-surface channel seal is formed in the following by means of various states another example of a sealing of a channel in water-bearing state are explained.

FIG. 12A shows in a longitudinal section a channel region 310 in which a water level 312 is provided. With a line 314 a channel bottom is indicated. In the upper part of the water level 312 is a

 Channel sealing system provided with a sheet-like mat material 316, which rests on a sheet-like sealing material 318. The sheet-shaped sealing material 318 is, for example, a plastic sealing strip (KDB) and has lateral raised edges 320 in order to form a type of trough-shaped basin 321. Fig. 12B shows the situation of Fig. 12A in a cross-section. The sheet-shaped sealing material 318, for example the KDB, is pulled up laterally at bank areas. As already indicated in FIG. 12A, the sheet-like mat material 316 has cavities 322 which are filled in a middle region 324, for example with concrete, and which are unfilled in lateral regions 325. The central region 324 is located above the channel bottom 314, for example, and the lateral, unfilled regions 325 are located above lateral slope regions 326. The plastic sealing strip or the sheet-like sealing material 318 can be, for example,

 Dammkronenbereichen 328 be deposited to provide a necessary length that is needed during the lowering process.

In Fig. 12C, a state is shown in which the well area, or

trough-shaped basin 321, flooded with water, causing a lowering 330 is effected. Since the concrete in the cavities 322 is still liquid or viscous, there is a kind of sagging of the sheet-like mat material 316 together with the sheet-shaped sealing material 318, for example in the form of a parabola, as indicated in FIG. 12C

By gravity, a lowering then takes place on the channel bottom 314, as indicated in FIG. 12D. As shown in FIG. 12E, the lateral regions 325 are subsequently filled, for example, from land. In this case, individual areas can be filled separately, as indicated by reference numeral 332

In FIG. 12F, it is shown in a final state 334 that a continuous seal is provided by the padded lateral slope regions 332 and the filled regions 322 in the area of the channel bottom 314.

Subsequently, the described steps are repeated, for example offset in the longitudinal direction of the channel, so as to continuously expand in the direction of the channel, the seal. If the seal is not introduced in an entire width in one operation, a repetition is also offset in the direction of the channel cross section.

The embodiments described above can be combined in different ways. In particular, aspects of the method may also be used for embodiments of the devices as well as use of the devices, and vice versa

In addition, it should be noted that "comprehensively" does not exclude other elements or steps and "a" or "an" does not exclude a multitude. It should also be noted that features or steps identified by reference to one of the The above embodiments and aspects may also be used in combination with other features or steps of other embodiments and aspects described above. Reference signs in the claims are not to be considered as limiting.

Claims

Claims 1. Channel sealing system (10) for sealing a channel (12) in a water-bearing state, with: - a dispensing device (16); and an introduction device (18); wherein the dispensing device is designed to dispense a web-shaped mat material (20) onto a first region of a water surface of a canal; wherein the sheet-shaped mat material is at least partially formed with cavities (22) for receiving a support material; wherein the insertion device is designed to introduce support material (24) into at least part of the cavities for successive lowering of the web-shaped mat material until it rests on a channel base surface (26). 2. Duct sealing system according to claim 1, wherein the sheet-shaped mat material is a concrete formwork envelope (32) with a plurality of cavities (34) for receiving the support material, and wherein the support material is provided: i) hardening mixture; and or ii) Loose material. 3. Channel sealing system according to claim 1 or 2, wherein the Dispensing device is designed to arrange a web-shaped sealing material (40) below the web-shaped mat material. 4. Channel sealing system according to claim 1, 2 or 3, wherein the The dispensing device is designed to apply the web-shaped mat material and/or the web-shaped sealing material to the water surface with lateral upstands (42) in such a way that it forms a trough-shaped basin (44) with a circumferential edge (46), the edge being above a surrounding one Water level (48) of the channel to be sealed is arranged; and wherein a connecting device (50) is provided which is designed to form a connection between the. trough-shaped basin and the surrounding water table. 5. Channel sealing system according to one of the preceding claims, wherein the dispensing device has a holding device (52) which is formed from the web-shaped mat material and/or the web-shaped To hold sealing material between two opposite bank areas of the canal, the web-shaped mat material and / or the web-shaped sealing material resting on the water or being at least partially immersed in the water. 6. Channel sealing system according to one of the preceding claims, wherein at least one buoyancy element (70) is provided which has a Buoyancy force (72) acts on the web-shaped mat material; where the Buoyancy force of the at least one buoyancy element can be reduced for the successive lowering 7. Channel sealing system according to claim 6, wherein in the buoyancy cavities (74) are provided in web-shaped mat material, which are filled with air and provide the buoyancy force; and a valve device (76) for releasing the air is provided for the successive lowering 8. Channel sealing system according to one of the preceding claims, wherein a stabilization device (80) is provided to hold the web-shaped mat material at least in the direction of flow during lowering. 9. Channel section (100) comprising: - lateral (102) and lower (104) channel boundary surfaces; a water level (108); and sheet mat material (110); wherein the bafane-shaped mat material is provided for sealing at least partial areas of the channel boundary surfaces and is at least partially formed with cavities (112) to accommodate a support material (114) for successive lowering (116) of the web-shaped mat material until it rests on a channel base surface; and wherein the web-shaped mat material is arranged floating on the water level 10. Channel section comprising: lateral and lower channel boundary surfaces; a water level; and a sewer sealing system according to one of the statements 1 to 8. 11. Method (200) for sealing a sewer in a water-bearing state, comprising the following steps: a) spreading (210) a sheet-shaped mat material onto a first area of the water surface of the channel; where the web-shaped Mat material at least partially with cavities to accommodate a Support material is formed; b) introducing (212) the support material into at least some of the cavities and c) successive lowering (214) of the web-shaped mat material until it rests on a channel base. 12. The method according to claim 11, wherein in step a) the sheet-shaped mat material and / or sheet-shaped sealing material, which is arranged below the sheet-shaped mat material, such with lateral Upstands are/are installed so that a trough-shaped basin with a circumferential edge and a base area is formed, the edge being arranged above a surrounding water level of the channel to be sealed; and wherein after step b) a connection is formed between the trough-shaped basin and the surrounding water level. 13. The method according to any one of claims 11 or 12, wherein in step b) support material is introduced into the web-shaped mat material in a central region, the central region being provided as a channel base cover; and whereby after step c) lateral areas of the web-shaped Mat material is filled with the support material on the sides embankment areas. 14. The method according to any one of claims 11 to 13, wherein steps a) to c) are repeated; and where in the repetition in step a) the web-shaped Mat material is applied to a second area of the water surface of the canal, and in step c) the lowering takes place in such a way that a full-surface canal seal is successively created. 15. Use of a system according to one of claims 1 to 8 for sealing a channel.