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EP2423388A1 - Procédé et dispositif de fabrication d'une paroi moulée - Google Patents

Procédé et dispositif de fabrication d'une paroi moulée Download PDF

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Publication number
EP2423388A1
EP2423388A1 EP10009010A EP10009010A EP2423388A1 EP 2423388 A1 EP2423388 A1 EP 2423388A1 EP 10009010 A EP10009010 A EP 10009010A EP 10009010 A EP10009010 A EP 10009010A EP 2423388 A1 EP2423388 A1 EP 2423388A1
Authority
EP
European Patent Office
Prior art keywords
mixing
unit
release unit
release
slot
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10009010A
Other languages
German (de)
English (en)
Inventor
Edgar Renz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bauer Spezialtiefbau GmbH
Original Assignee
Bauer Spezialtiefbau GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bauer Spezialtiefbau GmbH filed Critical Bauer Spezialtiefbau GmbH
Priority to EP10009010A priority Critical patent/EP2423388A1/fr
Publication of EP2423388A1 publication Critical patent/EP2423388A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
    • E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
    • E02D3/126—Consolidating by placing solidifying or pore-filling substances in the soil and mixing by rotating blades
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/13—Foundation slots or slits; Implements for making these slots or slits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/18—Bulkheads or similar walls made solely of concrete in situ
    • E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/06—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging elements mounted on an endless chain
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/08—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with digging wheels turning round an axis
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/101—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables forming during digging, e.g. underground canalisations or conduits, by bending or twisting a strip of pliable material; by extrusion

Definitions

  • the invention relates to a method for producing a trench wall in the floor according to the preamble of claim 1. Furthermore, the invention relates to an apparatus for producing a trench wall in the ground according to the preamble of claim 6. Finally, the invention relates to a release unit for a method according to one of the claims 1 to 5 or a device according to one of claims 6 to 14.
  • a slit is created by abrading soil material and, to form the trench wall, the abraded soil material in the slit is mixed with a curable suspension to a soil mortar by means of at least one mixing unit, wherein at least one rod with mixing elements is rotationally driven for mixing.
  • the generic device comprises at least one mixing unit, which is designed for mixing abraded soil material and a suspension to a floor mortar within a slot and at least one rotatably driven rod, are arranged on the mixing elements, and a suspension feed for supplying the suspension for forming the floor mortar ,
  • a first technique is to make a continuous, horizontal and dense wall of a floor mortar in the so-called lamellar process.
  • a first step with a certain distance individual slats produced.
  • a further blade between the spaced slats is cut in each case.
  • Such a method is for example in the DE 102 38 646 B3 described.
  • the individual slats must be created very accurately in their defined position, otherwise leaks in the slot wall may occur.
  • the sinking of the individual slats is relatively time-consuming and it takes a longer time to homogenize the soil mortar in the individual slats.
  • a second technique is to scrape a sprocket blade into the ground and advance this sword in a horizontal direction.
  • Such a method is for example in the WO 97/17497 described.
  • Milling Chain Swords are used, among other things, for the stabilization and sealing of dykes.
  • the invention has for its object to provide a method and apparatus for producing a trench wall with floor mortar, which are particularly effective and with which a good mixing of the floor mortar can be achieved.
  • the object is achieved in a first aspect by a method having the features of claim 1.
  • the object is achieved in a second aspect by a device having the features of claim 6.
  • the object is achieved by a release unit with the features of claim 15.
  • Preferred embodiments of the invention are specified in the respective subclaims.
  • the inventive method is characterized in that at least one release unit is provided in addition to the mixing unit, which extends over the depth of the slot and by means of milling elements in the direction of travel at the Working face over the depth of the slot removes soil material, and that the release unit and the mixing unit are moved horizontally, wherein the release unit leads the mixing unit.
  • the device according to the invention is characterized in that furthermore at least one release unit is provided, which is arranged next to the mixing unit and designed for removing ground material in the direction of travel at the working face over the depth of the slot.
  • a first aspect of the invention is that the trench wall of floor mortar is continuously created by advancing the device along a slot longitudinal axis, in particular in the horizontal direction.
  • a continuous trench wall made of floor mortar can be created, which is particularly dense, since it contains little or no construction joints.
  • a second aspect of the invention is to largely spatially and structurally separate the dissolution of the soil material and the mixing of the dissolved soil material with the curable suspension to produce a soil mortar.
  • a soil release or milling unit is provided, which releases the soil material during the horizontal propulsion of the device.
  • a mixing unit is provided, which mixes the dissolved soil material with the curable suspension and during the horizontal propulsion of the device performs substantially no soil removal.
  • a further aspect of the invention can be seen in the provision of a rod-shaped mixing device with a vertical rod, which is arranged in particular along the entire slot depth, despite a horizontal propulsion of the device.
  • the device is first lowered vertically until it has reached the final depth of the trench wall to be created. Subsequently, the device is moved laterally in the direction of the diaphragm wall to be produced, that is to say essentially horizontally, with the diaphragm wall being created.
  • the soil material at the working face that is the working side, is released essentially over the entire slot depth.
  • the dissolved soil material is, especially in horizontal Direction, promoted in a rear region of the release unit, where it is homogenized by the at least one trailing mixing unit.
  • the release unit has at least one drive rod with milling elements, which extends vertically but inclined in the slot, and that a direction of rotation of the drive rod is changed several times, in particular periodically.
  • a direction of rotation of the drive rod is changed several times, in particular periodically.
  • the direction of rotation is changed approximately every 10 to 20 seconds. This avoids a greater deviation of the slot from a straight line.
  • the rotational speed for the drive rod of the release unit is preferably about 1 revolution per second to 5 revolutions per second.
  • the rod of the at least one mixing unit can be rotated at the same rotational speed or slower.
  • the release unit can in particular be driven horizontally at a speed of 10 to 100 centimeters per minute. Basically, however, faster or slower propulsion speeds are possible.
  • the mixing unit and / or the release unit are moved up and down like a pendulum.
  • the up and down movement of the mixing unit and / or the release unit during the horizontal feed of the device similar to a jigsaw, facilitates the release of the soil material.
  • the curable suspension which may in particular also be a sealing suspension, the components of water, cement and bentonite.
  • the suspension can in principle be introduced into the slot at the release unit and / or at the mixing unit.
  • a particularly good homogenization of the soil mortar can be achieved by introducing the curable suspension into the slot both in the area of the mixing unit and additionally in the region of the dissolving unit. By adding the suspension in the region of the dissolving unit, the dissolution of the soil can be facilitated.
  • the homogenization of the soil mortar can be further improved if the curable suspension is added distributed at different depths of the milling slot.
  • a further preferred embodiment of the method is that the curable suspension is added under elevated pressure. Due to the increased pressure, a certain cutting force and thus an improvement of the loosening of the soil can be effected.
  • At least two drive rods are provided, which are rotated in opposite directions.
  • the method can basically be used in a wide variety of types of soils, for example in fine-grained, coarse-grained and cohesive soils.
  • One aspect of the device according to the invention is that the release unit for removing soil material in slot longitudinal axis, ie in the horizontal direction, is formed.
  • the release unit has at least one drive rod which can be driven in rotation with radial milling elements distributed along its length.
  • a rod-shaped release unit allows effective dissolution and conveyance of the soil material in the horizontal direction.
  • the milling elements are preferably arranged substantially along the entire length of the drive rod to release the soil material along the entire slot depth and to convey it to a rear portion of the slot to the mixing unit.
  • the radial milling elements extend outwardly from the drive rod and may, at least in part, be inclined upwardly, downwardly and / or circumferentially of the drive rod.
  • the drive rod of the release or milling unit and the rod of the mixing unit are preferably arranged in parallel.
  • the mixing unit is preferably designed so that in addition a homogenization of the soil mortar in the vertical direction of the slot can take place.
  • the mixing elements For this purpose, the mixing unit may, for example, be helical, worm-paddle or wing-shaped. It is also possible to provide any desired combinations of different mixing elements, such as helices, screws, vanes and / or paddle-like sheets. Furthermore, the mixing elements may have holes or recesses in order to intensify the mixing process.
  • the mixing elements preferably extend substantially along the entire length of the rod to achieve good homogenization along the entire slot depth.
  • a drilling tool is arranged at a lower end of the mixing unit.
  • the drilling tool may have a cutting device for releasing soil material.
  • the suspension feed for adding the curable suspension can be arranged on the release unit and / or the mixing unit.
  • the suspension feed may have one or more outlet openings or nozzles.
  • the drive rod of the release unit may be formed as a hollow core tube.
  • the core tube preferably has a plurality of outlet openings or nozzles distributed along the length as a suspension feed.
  • the rotatably driven rod of the mixing unit for supplying the curable suspension may be formed as a hollow core tube.
  • the core tube of the mixing unit preferably has a plurality of outlet openings or nozzles as suspension feed, which are distributed along the length of the core tube.
  • the drilling tool may have a cutting device for releasing soil material.
  • the milling or release elements are designed for different directions of rotation of the drive rod.
  • the milling or release elements are each designed so that a cutting action is achieved in both directions of rotation.
  • a plurality of milling or release tools in particular Fräszähne be provided on a milling or release element, for example, wherein at least a first milling tool for a first direction of rotation and a second milling or release tool for a second direction of rotation is formed.
  • the milling or loosening tools can be protected with welding jobs.
  • the milling or release elements are preferably arranged helically or helically along the drive rod or the core tube.
  • the release unit has a double linkage, wherein a first rod part is rotatable in a first direction of rotation and a second rod part simultaneously in a second direction of rotation.
  • a first rod part is rotatable in a first direction of rotation and a second rod part simultaneously in a second direction of rotation.
  • two concentric telescoping axes or rods may be provided.
  • the two rod parts which can also be referred to as upper and lower linkage, either each have their own drive or are coupled to each other via a transmission.
  • At least two release units arranged parallel to one another are provided.
  • the release units each have a drive rod with release tools or cutting elements.
  • the drive rods are arranged parallel to each other.
  • the drive rods are rotatable in opposite directions.
  • the release units each have their own rotary drive for the drive rods.
  • the individually driven drive rods different rotational speeds and rotational positions of the release units can be adjusted.
  • an improved passage of larger stones for example, with a diameter of 10 centimeters or more, can be achieved.
  • the release units can be seen laterally side by side, in particular offset, arranged in the drive direction of the device.
  • the drive rods are then arranged in a plane which extends transversely to a longitudinal plane or longitudinal axis of the slot wall.
  • the release units are laterally offset from one another and, viewed in the direction of advance, arranged one behind the other.
  • the release units can be arranged obliquely one behind the other in the direction of advance.
  • the release unit has a sword-shaped chain cutter.
  • a chain cutter which can also be called a Mine Chain Sword, has a good milling action and thus allows for easy release of the soil material.
  • the release unit has a plurality of cutting wheels.
  • the cutting wheels are preferably distributed over the length of the release unit or the depth of the Frässchlitzes.
  • the cutting wheels each have an axis of rotation which is arranged transversely to a longitudinal axis of the release unit.
  • the cutting wheels therefore preferably each have a horizontal axis of rotation and are arranged one below the other.
  • the release unit has a plurality of horizontal milling or cutting wheels that can penetrate disc-shaped in the ground.
  • the milling or cutting wheels preferably have milling or cutting devices along their circumference.
  • a further preferred embodiment consists in that a carrier vehicle is provided with at least one mast, along which a lifting carriage can be moved, and in that the mixing unit and the release unit are mounted on the lifting carriage.
  • the mast and the lifting serve in particular to the release unit and the Lowering mixing unit, especially at the beginning of a slot position or after a work interruption, perpendicular to the ground and, in particular after completion of the slot wall or at the end of a working day to pull out of the slot again.
  • the device can be moved in the horizontal direction solely by the carrier vehicle traveling slowly with the release unit and the mixing unit along a horizontal advancing direction.
  • a pressure or force introduction device is provided in order to apply a horizontal force to the release unit and / or the mixing unit below a terrain surface.
  • the application of the horizontal contact force is preferably carried out in the region of at least one connecting device, with which the mixing unit and the release unit are connected to each other.
  • the force is introduced by a pressure force on the mixing unit and / or the release unit.
  • the connecting device may be an elongated, in particular rod-shaped element, which is arranged approximately transversely to the longitudinal axis of the release unit and / or the mixing unit.
  • the connecting device may comprise rotary guides for the mixing unit and / or the release unit or their rotating rods.
  • the additional horizontal pressing force can be provided, for example, via a vertical rod-shaped or bar-shaped device which presses against the release unit and / or the mixing unit from below behind the ground surface.
  • the rod or bar-shaped device can preferably be moved up and down in order to be able to be pulled out of the slot during or before curing of the suspension.
  • the rod-shaped device preferably has a larger moment of resistance than the release unit and / or the mixing unit.
  • the rod-shaped device is mounted on a carrier vehicle to the mast trailing second carrier vehicle.
  • the horizontal contact force can also be provided via at least one lifting cylinder, which extends obliquely or horizontally and presses against the release unit and / or the mixing unit.
  • the at least one lifting cylinder can also be attached to a trailing carrier vehicle.
  • the lifting cylinder can preferably be removed from the milling slot via the carrier vehicle.
  • a tracked vehicle or a wheel-driven device is provided as a trailing carrier vehicle. But it can also be combined in a device with the dissolving and mixing device.
  • At least one rotationally drivable feed wheel with blade and / or claw-shaped arms is arranged at a lower end of the release unit.
  • the feed wheel is preferably provided with its own drive.
  • the scoop-like or claw-like arms can penetrate into the ground and press the device forward on its lower side in the feed direction, thereby promoting propulsion.
  • an inclination measuring device be provided on the mixing unit and / or the release unit.
  • at least two inclining measuring sensors arranged one above the other are arranged in one axis in order to be able to reproduce a traverse of the axis of rotation.
  • inclinometer chains can be provided, which are fastened in or on the core tube of the dissolving or mixing unit. The reading can always be made when the device is briefly stopped at a given angle of rotation.
  • a display is provided which indicates the position of the tool, in particular a driver of the device.
  • the method according to the invention can be carried out in particular by means of the device according to the invention.
  • the device according to the invention is in particular designed to carry out the method according to the invention.
  • the release unit comprises at least one drive rod which is rotatably drivable, a plurality of radial milling elements, which are formed along the drive rod for removing soil material at a lateral feed of the drive rod, and a drilling tool at a lower end of the drive rod for sinking the release unit along a longitudinal axis the frying pan.
  • the drilling tool has a drill bit with which soil material can be removed during a lowering of the release unit along a longitudinal axis of the release unit.
  • Fig. 1 shows a first embodiment of an apparatus 10 according to the invention for producing a trench wall of floor mortar.
  • the device 10 comprises two rod-shaped mixing units 20, 21 and a parallel thereto, also rod-shaped release or milling unit 40.
  • the mixing units 20. 21 are formed substantially the same.
  • a first mixing unit 20 will be described below.
  • the first mixing unit 20 has a hollow rod 22 designed as a hollow tube, along which a plurality of mixing elements 24 are arranged.
  • the rod 22 is rotatably drivable and forms a longitudinal axis of the mixing unit 20 and a rotation axis for the mixing elements 24.
  • the mixing elements 24 have a plurality of helices, which are each arranged along a longitudinal section of the rod 22.
  • the spirals create a vertical flow within the freshly made soil mortar in the wall, resulting in good homogenization over the entire slot depth.
  • the plurality of coils may in principle also be arranged a continuous coil.
  • the mixing elements 24 extend substantially along the entire length of the core tube.
  • a drilling tool 28 which allows for easier penetration of the mixing unit 20 into the ground.
  • the mixing unit 20 can thus also be referred to as a drilling-mixing unit.
  • the drilling tool 28 By the drilling tool 28, the mixing unit can be screwed along its longitudinal axis in the ground.
  • the drilling tool 28 has at least one cutting device for releasing soil material.
  • a cutting edge of the cutting device extends at the lower end of the rod 22 transversely, in particular radially to this.
  • a radial extent of the drilling tool 28 or the cutting edge is at least as large as a radial extent of the mixing elements 24.
  • a second mixing unit has a rod 23 corresponding to the first mixing unit, on which mixing elements 25 are arranged. At a lower end of the rod 23 is a drilling tool 29th
  • the release unit 40 has a parallel to the rod 22 aligned hollow drive rod 42, which may also be referred to as a core tube.
  • the individual cutting elements 44 may, for example, be arranged helically or helically around the drive rod 42.
  • the drive rod 42 is rotatably drivable and forms a longitudinal axis of the release unit 40 and a rotation axis of the cutting elements 44th
  • the cutting elements 44 each have a radial milling arm 46 with at least one milling tool 47.
  • the milling tool 47 is located on one of the drive rod 42 opposite end of the Fräsarms 46th
  • a drilling tool 48 towelteufen the release unit 40 along its longitudinal axis in the ground.
  • the release unit 40 can thus also be referred to as a drilling-milling unit.
  • the drilling tool 48 has at least one cutting device for releasing soil material.
  • a radial extent of the drilling tool 48 may in principle be smaller than a radial extent of the milling elements 44.
  • the mixing units 20, 21 and the release unit 40 are connected to one another via a plurality of connecting devices 30.
  • the connecting means 30 are formed as transverse yokes between the rods 22 and 23 and between the drive rod 42 and the rod 22.
  • the rods 22, 23 and the drive rod 42 are rotatably mounted in rotary guides 32 of the connecting means 30.
  • the connecting means 30 have a stepped shape in order to achieve an improvement in the mixing of the floor mortar, in particular in the vertical direction.
  • the rotary guides 32 of a connecting device 30 are each at different lengths of the units 20, 21, 40 or at different depths of the slot.
  • connecting devices are also possible in principle, which are arranged obliquely with respect to the lateral advancing direction of the device 10.
  • suspension feeds 34 are provided as suspension feeds 34 along the core tubes of the mixing units 20, 21 and the release unit.
  • the core tubes are each connected via a flushing head 36 to a suspension supply line 38.
  • the apparatus 10 further includes a first carrier vehicle 60 having a mast 62.
  • the first carrier vehicle 60 may be, in particular, a tracked or crawler vehicle.
  • a lifting carriage 64 is arranged movable.
  • the lifting carriage 64 is movable along a longitudinal axis of the mast 62.
  • at least one pulling element for example a rope, a chain or a cylinder, is provided.
  • the release unit 40 and the mixing units 20, 21 are rotatably mounted on the lifting carriage 64 and moved together with the lifting carriage 64 parallel to the mast 62.
  • the release unit 40 and the mixing units 20, 21 can be rotationally driven by their own motors on the lifting carriage 64.
  • the apparatus 10 further comprises a pressing device 70 for applying a horizontal contact pressure to a mixing unit 20, 21 and / or a release unit 40, 41 below a ground or ground surface 14 or below the lifting carriage 64.
  • the pressing device 70 may be a separate construction or combined with the mixing and dissolving unit 20, 40 to form a device.
  • the pressing device 70 has a parallel to the mixing units 20, 21 and the release unit 40 arranged pressing bar 72.
  • the pressing bar 72 has a greater moment of resistance than the release unit 40 and / or the mixing units 20, 21.
  • the pressing bar 72 is vertically movable in order to be pulled out of the slot at the conclusion or interruption of the work can.
  • the pressing device 70 comprises a second carrier vehicle 80, which, like the first carrier vehicle 60, may be, for example, a caterpillar or tracked vehicle.
  • the second carrier vehicle 80 preferably has two chains whose spacing is greater than the width of the slot to be created.
  • the pressing bar 72 is mounted so as to be axially displaceable in the vertical direction on the second carrier vehicle 80.
  • the Anpressbalken 72 may be additionally mounted pivotably about a horizontal axis of rotation.
  • the introduction of the horizontal contact force is carried out on the connecting means 30.
  • the connecting means 30 are therefore each designed so that an end portion contacted by the Anpressbalken 72 and can be acted upon by a contact pressure.
  • the connection devices 30 are arranged such that a plurality of connection devices 30 can be contacted simultaneously by the contact pressure bar 72. In this case, a horizontal force can be exerted on the connecting devices 30 by means of the pressure bar 72.
  • Force introduction devices or print heads 33 are respectively provided on the connecting devices 30 at the end.
  • the force introduction devices may be constructed in the manner of a shock absorber.
  • FIG. Fig. 2 A second embodiment of the device 10 is shown in FIG Fig. 2 shown.
  • the pressing device 70 has no vertical pressing bar 72, but rather a plurality of lifting cylinders 76, 77, which are pivotably connected about a horizontal axis of rotation 78 and 79, respectively, to the second carrier vehicle 80.
  • Each lifting cylinder 76, 77 is articulated on the one hand to the second carrier vehicle 80 and on the other hand to a connecting device 30.
  • the lifting cylinders 76, 77 each have a cylinder housing and a piston displaceably guided therein.
  • FIG Fig. 3 Another embodiment of the device 10 is shown in FIG Fig. 3 shown.
  • the apparatus has a feed wheel 84 which can be driven in rotation.
  • the feed wheel 84 is provided at a lower end of the release unit 40 and is rotatably mounted about a horizontal axis of rotation 86 on a bearing plate 88.
  • the bearing plate 88 also has a rotary guide 32 for the drive rod 42.
  • the feed wheel 84 comprises blade-like or claw-shaped arms 90, which are circumferentially arranged on a wheel body 92 of the feed wheel 84.
  • a connecting device 30 is arranged in a lower region of the mixing and detaching units 20, 21, 40 in order to transfer the horizontal feed force generated by the feed wheel 84 effectively to the mixing units 20, 21.
  • a section of a release unit 40 according to the invention is shown in a perspective view.
  • the release unit 40 comprises a drive rod 42, which is rotatable about a longitudinal axis 6 of the drive rod 42.
  • milling elements 44 are arranged helically or helically.
  • the milling elements 44 each have a milling tool 47 in order to remove soil material transversely to the longitudinal axis 6 on rotation of the release unit 40 about the longitudinal axis 6 and a lateral advance of the release unit 40.
  • Fig. 5 shows the release unit 40 Fig. 4 in a side view.
  • Each of the cutting elements 44 is radially aligned with the drive rod 42 in order to achieve the largest possible radial cutting or milling action.
  • a release unit 40 with a double linkage is in Fig. 6 shown.
  • the release unit 40 comprises an upper linkage 50 and a lower linkage 52.
  • the two linkages 50, 52 can be driven simultaneously in different directions of rotation.
  • Milling elements 44 are arranged on both rods 50, 52.
  • the two linkages 50, 52 are arranged concentrically or coaxially with each other and can either be coupled together via a gear 54 or driven separately.
  • FIGS. 7 to 9 show a section of a trench wall 12 to be created in a ground in a view from above.
  • a device 10 for creating a slot wall 12 is located in the ground and moves in the horizontal feed direction 2 to the right. In the left-hand area of the illustrations, the slot wall 12 has already been created, while soil material is still present in the right-hand area.
  • the device 10 shown essentially corresponds to the device according to Fig. 1 ,
  • the device 10 comprises a release unit 40 and two mixing units 20, 21, which follow the release unit 40 in the advancing direction 2.
  • Release unit 40 and Mixing units 20, 21 are moved horizontally in the ground.
  • the vertical rods 22, 23 of the mixing units 20, 21 and the vertical drive rod 42 of the release unit 40 are arranged in the drive direction 2 in a vertical center plane 16 of the slot wall 12.
  • the device 10 according to Fig. 8 has in contrast to the previously described devices on two release units 40, 41.
  • the release units 40, 41 are arranged side by side in such a way that the respective drive rods 42, 43 extend in a transverse axis of the slot wall 12.
  • the release units 40, 41 each have a diameter which is half the diameter of a mixing unit 20, 21.
  • the release units 40, 41 are preferably rotated in different directions.
  • the release units 40, 41 have for this purpose either milling tools 47, which are designed for two directions of rotation, or a first release unit 40 is for a first direction of rotation and a second release unit 41 is designed for a second direction of rotation.
  • Fig. 8 In contrast to Fig. 8 are the release units 40, 41 of the device 10 according to Fig. 9 staggered to each other.
  • the two release units 40, 41 are arranged in other words in the advancing direction 2 obliquely one behind the other.
  • the release units 40, 41 compared to the embodiment according to Fig. 8 a larger diameter and the drive rods 42, 43 may have a greater distance from each other. With this embodiment, larger stones can be better transported between the release units 40, 41 in the direction of the mixing units 20, 21.
  • Fig. 10 an embodiment of two release units 40, 41 is shown, in which overlap the effective ranges of the release units.
  • the cutting elements 44 are each attached to different heights or lengths of the drive rods 42.
  • FIG. 11 A detailed view of a drive rod 42 with a milling or release element 44 is in Fig. 11 shown.
  • the milling element 44 has a plurality of radially to the drive rod 42 arranged cutting arms 46, of which only one is shown.
  • milling tools 47 are arranged, each one in tangential Have direction aligned milling tip.
  • a further embodiment of a device 10 is shown.
  • the release unit 40 comprises a chain cutter 96 or a chain cutter bar.
  • the chain cutter 96 has a longitudinal axis, which is arranged parallel to the longitudinal axis of the mixing units 20, 21.
  • the chain cutter 96 is also connected via connecting means 30 with the mixing units 20, 21 and mounted on the lifting carriage 64.
  • a motor 98 is provided on the lifting carriage 64.
  • FIG Fig. 13 Another embodiment of a device 10 is shown in FIG Fig. 13 shown.
  • the release unit 40 has a plurality of cutting wheels 56, which are arranged vertically one below the other.
  • the cutting wheels 56 each have a horizontal axis of rotation 58.
  • the cutting wheels 56 are mounted on a bearing plate 57, the longitudinal axis of which extends vertically and parallel to the rods 22, 23 of the mixing units 20, 21.
  • the bearing plate 57 is connected by means of the connecting means 30 with the mixing units 20, 21.
  • the bearing plate 57 has a suspension feed channel 59.
  • the curable suspension can be introduced into the milling slot 12 via the suspension feed channel 59 and outlet openings provided thereon.

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Agronomy & Crop Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Soil Sciences (AREA)
  • Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
EP10009010A 2010-08-30 2010-08-30 Procédé et dispositif de fabrication d'une paroi moulée Withdrawn EP2423388A1 (fr)

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EP10009010A EP2423388A1 (fr) 2010-08-30 2010-08-30 Procédé et dispositif de fabrication d'une paroi moulée

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2666911A1 (fr) * 2012-05-25 2013-11-27 Bauer Spezialtiefbau GmbH Procédé de fabrication dýune paroi en mortier fixée dans le sol
CN105220696A (zh) * 2015-09-08 2016-01-06 上海市基础工程集团有限公司 回转铣削式深层搅拌围护结构施工方法
NL2013332B1 (nl) * 2014-08-15 2016-09-22 Gww-Infra Holding B V Dijk, een werkwijze om een dijk te verbeteren en een inrichting voor het uitvoeren van de werkwijze.
EP3208384A1 (fr) 2016-02-17 2017-08-23 BAUER Maschinen GmbH Dispositif de rideau souterrain et procédé de fabrication de rainures dans le sol
US10214798B2 (en) 2013-11-15 2019-02-26 Massachussetts Institute Of Technology Method for controlling the energy damping of a shape memory alloy with surface roughness

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379658A (en) * 1980-12-03 1983-04-12 Thatcher Engineering Corporation Method and apparatus for constructing slurry walls
FR2523169A1 (fr) * 1982-03-09 1983-09-16 Takenaka Komuten Co Machine et procede pour durcir un sol meuble dans des zones en profondeur notamment des fonds marins
US5050320A (en) * 1988-10-26 1991-09-24 Kajima Corporation Multi-shaft kneading auger system
JPH0978626A (ja) * 1995-09-13 1997-03-25 Seiko Kogyo Kk 地中壁連続造成工法及びその装置
WO1997017497A1 (fr) 1995-11-10 1997-05-15 Sidla Und Schönberger Erdbaugesellschaft Mbh Procede et dispositif pour compacter le sol
JP2002371586A (ja) * 2001-06-13 2002-12-26 Nippon Sharyo Seizo Kaisha Ltd 地中連続壁の施工機
DE10238646B3 (de) 2002-08-23 2004-04-01 Bauer Spezialtiefbau Gmbh Dichte Mixed-in-Place-Wände
US20050025579A1 (en) * 2003-06-06 2005-02-03 Kouichi Sogou Method for forming an underground impermeable wall
US20060032094A1 (en) * 2004-08-10 2006-02-16 Compagnie Du Sol Machine for digging a trench and making a wall in said trench

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4379658A (en) * 1980-12-03 1983-04-12 Thatcher Engineering Corporation Method and apparatus for constructing slurry walls
FR2523169A1 (fr) * 1982-03-09 1983-09-16 Takenaka Komuten Co Machine et procede pour durcir un sol meuble dans des zones en profondeur notamment des fonds marins
US5050320A (en) * 1988-10-26 1991-09-24 Kajima Corporation Multi-shaft kneading auger system
JPH0978626A (ja) * 1995-09-13 1997-03-25 Seiko Kogyo Kk 地中壁連続造成工法及びその装置
WO1997017497A1 (fr) 1995-11-10 1997-05-15 Sidla Und Schönberger Erdbaugesellschaft Mbh Procede et dispositif pour compacter le sol
JP2002371586A (ja) * 2001-06-13 2002-12-26 Nippon Sharyo Seizo Kaisha Ltd 地中連続壁の施工機
DE10238646B3 (de) 2002-08-23 2004-04-01 Bauer Spezialtiefbau Gmbh Dichte Mixed-in-Place-Wände
US20050025579A1 (en) * 2003-06-06 2005-02-03 Kouichi Sogou Method for forming an underground impermeable wall
US20060032094A1 (en) * 2004-08-10 2006-02-16 Compagnie Du Sol Machine for digging a trench and making a wall in said trench

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2666911A1 (fr) * 2012-05-25 2013-11-27 Bauer Spezialtiefbau GmbH Procédé de fabrication dýune paroi en mortier fixée dans le sol
US10214798B2 (en) 2013-11-15 2019-02-26 Massachussetts Institute Of Technology Method for controlling the energy damping of a shape memory alloy with surface roughness
NL2013332B1 (nl) * 2014-08-15 2016-09-22 Gww-Infra Holding B V Dijk, een werkwijze om een dijk te verbeteren en een inrichting voor het uitvoeren van de werkwijze.
CN105220696A (zh) * 2015-09-08 2016-01-06 上海市基础工程集团有限公司 回转铣削式深层搅拌围护结构施工方法
EP3208384A1 (fr) 2016-02-17 2017-08-23 BAUER Maschinen GmbH Dispositif de rideau souterrain et procédé de fabrication de rainures dans le sol

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