KR20190014766A - Vertical shaft lining structure and method for construction the same - Google Patents

Abstract

A method of constructing a straight lining structure according to an embodiment of the present invention includes the steps of driving a propulsion unit to insert a propelling unit into a ground using a propulsion unit connected to a propulsion unit and a propulsion unit, A step of excavating the inside ground of the propulsion unit to expose one surface of the propulsion unit, a step of installing a mold that forms a space with a certain distance from the propulsion unit, a step of injecting concrete into the space by inserting a concrete injection pipe at the bottom of the space , And curing the concrete to form a first masonry lining unit.

Description

TECHNICAL FIELD [0001] The present invention relates to a vertical straightening lining structure,

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a water straightening lining structure and a method of constructing a water straightening lining structure.

The underground space is a city infrastructure that houses power, telecommunications, water, or heating facilities in a certain area underground. In order to install and maintain these power or communication lines, the coaxial cable is connected to the outside through a waterjet.

Generally, a straight lining structure to be installed in a vertical hole is installed in the inside of the horseshoe in the vertical direction by installing the horseshoe pits and the ground in the inside of the horseshoe pits.

When excavating the ground below the ground surface, order grouting is applied around the excavation surface outside the surface. However, in case of failure of the order grouting, the leakage of groundwater occurs on the excavation surface and the ground water level around the ground is lowered. The lowering of the groundwater level causes settlement of the surrounding ground.

In addition, the hypothetical is not a rigid structure for sufficiently preventing deformation of the ground but a temporary structure for securing a space for constructing a concrete structure, so that there is a risk of collapse due to an unexpected external environment change.

Therefore, the construction of a multi-lined lining structure is complicated and requires a lot of construction process. Therefore, there is a problem that the construction period is long and the surrounding ground can be settled down.

The present invention has been made based on the technical background as described above, and it is an object of the present invention to provide a method and apparatus for shortening a construction period for installing a straight lining structure, And to provide a method for constructing a multi-wall lining structure.

A method of constructing a straight lining structure according to an embodiment of the present invention includes the steps of driving a propulsion unit to insert a propelling unit into a ground using a propulsion unit connected to a propulsion unit and a propulsion unit, A step of excavating the inside ground of the propulsion unit to expose one surface of the propulsion unit, a step of installing a mold that forms a space with a certain distance from the propulsion unit, a step of injecting concrete into the space by inserting a concrete injection pipe at the bottom of the space , And curing the concrete to form a first masonry lining unit.

The step of installing a skeletal member in the space after the step of installing the form further comprises the step of disposing a foam member at a lower portion of the space to block the lower portion of the space, and one end of the skeletal member may be inserted into the foam member.

Separating the propelling unit and the propelling unit from the first vertical straight lining unit after forming the first vertical straight lining unit and injecting backfill into the rear space from which the propelling unit has been removed to form a backfill wall .

And a step of installing a backfill material injection pipe connected to the propulsion part from the outside of the mold after the step of installing the formwork, and the backfill material can be injected into the back space through the backfill material injection pipe.

And forming a second male straight lining unit below the first male straight lining unit, wherein the second male straight lining unit can be formed in the same manner as the first straight hole lining unit.

The foam member includes a first portion having a first thickness, a second portion having a second thickness that is thicker than the first portion, and a second portion is progressively reduced in thickness away from the form, It is possible to have an inclined surface inclined with respect to the center.

The concrete injection pipe may be inserted into an injection hole formed through an inclined surface of the foam member.

The propulsion unit may include a plate-like support member protruding from the one surface of the propulsion unit toward the propulsion unit, and the propulsion unit may be a hydraulic cylinder connected to the supporter to provide a force for the propulsion unit to be inserted into the ground.

In the present invention, there is provided a vertical lining structure inserted into a hole of a ground according to another embodiment of the present invention, comprising: a plurality of vertical straight lining units, each of which is provided continuously in the depth direction from the surface to the inner side of the ground, And the end portions of the skeletal members adjacent to each other in the depth direction are connected to each other.

And a backfill wall formed between the water hole lining unit and the side wall of the ground exposed by the hole and connecting the water hole lining unit to the side wall.

And a backfill extension unit integrally connected to the backfill wall and protruding from the backfill wall toward the straight hole lining unit and embedded in the straight hole lining unit.

The lower part of the first vertical straight lining unit, which is located relatively shallow relative to the surface of the ground, has a first depression and a first projection, and the upper part of the second vertical straight lining unit, And a second depression for engaging with the first projection, and the second projection may be located inside the vertical hole more than the first projection.

The width of the second protrusion may be shorter than the width of the first protrusion.

As in the present invention, when a multi-lane lining structure is constructed, it is possible to construct a multi-lane excavation and a concrete lining structure, which are concrete structures, so that the construction period can be greatly shortened. And the inflow of the gravel and the settlement of the ground surrounding the gravel ball can be prevented.

FIG. 1 is a schematic view of a multi-head drilling rig according to one embodiment of the present invention.
FIG. 2 is a perspective view showing a support that can be applied to the multi-head drilling system shown in FIG. 1. FIG.
3 is a perspective view illustrating a portion of a propulsion unit that may be applied to the present invention.
4 is an exploded perspective view of the propulsion unit shown in Fig.
5 is a schematic illustration of a multi-lane lining structure according to one embodiment of the present invention.
FIGS. 6 to 12 are schematic views illustrating a method of constructing a multi-wall lining structure according to an embodiment of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein.

In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

In addition, since the sizes and thicknesses of the respective components shown in the drawings are arbitrarily shown for convenience of explanation, the present invention is not necessarily limited to those shown in the drawings.

Also, throughout the specification, when an element is referred to as "including" an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

FIG. 1 is a schematic view of a multi-head drilling rig according to one embodiment of the present invention.

Vertical gangs are connected to underground gangways to provide access to gangways and materials for maintenance. The water straightening lining structure 600 is made of a concrete structure to prevent groundwater or gravel from being introduced, thereby preventing deformation of the surrounding ground.

The cross section of the vertical sphere may be formed in a polygonal or circular shape. In the following, the case where the vertical sphere has a circular cross section is described as an example.

The present invention includes a support member 10 and a control unit 110 for controlling the propulsion unit 20 and the propulsion unit 20 installed inside the support unit 10 according to an embodiment of the present invention .

The support 10 may be installed outside the straightening lining structure 600 surrounding the straightening lining structure 600 in the ground where the straightening lining structure 600 is located. The support portion 10 may be installed as a concrete structure on the ground surface.

FIG. 2 is a perspective view showing a support that can be applied to the multi-head drilling system shown in FIG. 1. FIG.

2, the supporting part 10 may include a base part 11 and a column part 13 provided on the base part 11. [

The base part 11 may be made of a concrete structure, and may be installed on the ground surface and be firmly fixed to the ground. The base portion 11 may be integrally formed to be installed on the ground around the vertical lining structure and to surround the vertical lining structure.

The column 13 may be made of an H-beam (H-BEAM), but is not limited thereto. For example, the pillars 13 may be made of a concrete structure, and may be made of T-bar (T-BAR) or the like. The post 13 may be formed longer than the inner pushing portion 21 (see FIG. 3) of the propelling portion 20 (see FIG. 3) described below. For example, the diameter of the vertical sphere may be greater than or equal to 6 m, and the length (or height) of the post 13 may be 5 m. In this case, the inner pushing portion 21 is formed to have a length of 5 m or less. These values are not intended to be limiting, but may vary depending on the state of the ground and the size of the vertical sphere.

The post 13 may be installed in the same quantity as the number of the propulsion unit 30 (see FIG. 3) connected to the propulsion unit described below.

The pressing portion 14 supports the propulsion device connected to the propelling portion and may be installed in the direction toward the inside of the supporting portion 10 at the post 13. The pressing portion 14 is connected to the propulsion unit 30 and protrudes to a length enough to support the propulsion unit 30. [ The pressing portion 14 may be formed of H-BEAM in the same manner as the supporting portion 10. The pressing portion 14 can be connected to the column portion 13 so that the height of the pressing portion 14 can be adjusted as the pressing portion 20 is inserted into the ground. At this time, the pressing portion 14 and the column portion 13 can be connected by bolts have.

Referring again to FIG. 1, the pushing portion 20 is installed inside the support portion 10, and can be inserted into the ground in conjunction with the support portion 10. Accordingly, the propulsion unit 20 can prevent the surrounding soil or groundwater from flowing into the support unit 10. [

The propulsion unit 20 may be divided into a plurality of parts and installed along the inside of the support unit 10, and each of the propulsion units 20 may be connected to each other. When the inner diameter of the support portion 10 is large or the depth of the vertical lining structure 600 is very deep, a plurality of the pushing portions 20 can be installed considering the frictional force with the ground.

The control unit 110 may be installed outside the support unit 10 to control the propulsion unit 20. [ The control unit 110 is connected to the hydraulic pressure generator 130 and the hydraulic pressure generator 130 can be connected to the generator 120. The hydraulic pressure generator 130 is connected to the propulsion unit 20 via a hydraulic hose 135. At this time, the hydraulic hose may be connected to each of the plurality of the propulsion parts 20. The control unit 110 controls the operation of the propelling unit 20 through the hydraulic pressure generator 130.

The excavating portion 150 may be located inside the support portion 10. For example, excavation section 150 may be an excavator. The size of the cross section of the vertical cross-section is variously set in consideration of the installation position and purpose. Therefore, when the size of the vertical sphere is large, a separate excavator may be used for the excavator 150. When the size of the vertical sphere is small, the excavator 150 may be connected to the excavator 20 to perform excavation .

FIG. 3 is a perspective view showing a part of a propulsion part that can be applied to the orthodontic drilling system shown in FIG. 1, and FIG. 4 is an exploded perspective view of the propulsion part shown in FIG.

As shown in FIG. 1, the plurality of the pushing portions 20 may be installed and connected to each other. Hereinafter, a single unit of the plurality of pushing units 20 will be described as an example.

3 and 4, the inserting direction in which the pushing portion 20 is inserted into the ground is a longitudinal direction and the direction crossing the inserting direction is a width direction, Explain.

The plurality of propulsion units 20 may include an outer propulsion unit 26 and an inner propulsion unit 21, respectively. The outer pushing portion 26 and the inner pushing portion 21 of the pushing portion 20 may be formed to be curved along the inner wall of the vertical sphere as shown in Figure 1 and the curvature of the vertical sphere and the curvature of the pushing portion may be the same .

Hereinafter, for convenience of explanation, the outer and inner pushing portions 26 and 21 are shown as flat surfaces.

The plurality of the propulsion units 20 may be connected to each other. At this time, the outer propulsion units 26 may be connected to each other and the inner propulsion units 21 may be connected to each other.

The inner pushing portion (21) is located on the inner side of the vertical pushing portion (26). The inner pushing portion 21 may be positioned below the outer pushing portion 26 and inserted into the ground before the outer pushing portion 26. The inner pushing portion 21 is located below the vertical pushing portion, It can be inserted deep into the ground.

The outer propulsion unit 26 is installed to surround the inner propulsion unit 21 so that the surrounding ground or groundwater can not flow into the propulsion unit 20. The outer and inner pushing portions 26 and 21 are not coupled to each other and can move into the ground without interfering with each other.

Specifically, the inner pushing portion 21 may include a tip shoe 22 and a first support 23.

The tip shoe 22 may include a connecting portion 22a and a contact surface 22b extending in the longitudinal direction in the inserting direction at the end of the inner pushing portion 21. [

The connecting portion 22a may be formed to be thinner than the thickness of the inner pushing portion 21. [ The connection portion 22a may be formed to have the same width as that of the inner pushing portion 21. [ As another example, the connecting portion 22a may include a plurality of pipes (not shown) spaced apart at predetermined intervals in the width direction of the inner pushing portion 21. [

The contact surface 22b may extend from the end of the connecting portion 22a in the direction opposite to the inserting direction of the inner pushing portion 21 and may be formed to be gradually and gradually spaced apart from the end portion of the connecting portion 22a. That is, the end portion of the tip shoe 22 is formed such that the contact surface is gathered and sharpened, and gradually spreads. Accordingly, the tip shoe 22 can reduce the frictional force by generating a gap between the outer surface of the connecting portion 22a or the inner pushing portion 21 and the ground. In one example, the contact surface 22b may be of a hinged construction. That is, the contact surface 22b has a hinge structure connected to the end of the connection portion 22a. When the tip shoe 22 is press-fitted in the insertion direction, the contact surface 22b is folded. When a force acts in the opposite direction, So that the inner pushing portion 21 is prevented from moving.

The first support 23 is a plate-like member, and the length of the first support 23 (length in the width direction of the inner pushing part) may be longer than the width in the width direction of the first support 23. The first support 21 may protrude from one side of the inner pushing portion 21 toward the center of the vertical sphere. At this time, it is preferable that the bisector in the longitudinal direction of the first support 23 and the bisector in the width direction of the inner pushing portion 21 coincide with each other.

A bracket 24 connected to the inner pushing portion 21 and supporting the first support 23 may be installed on the lower portion of the first support 23.

The width of the outer pushing portion 26 may be the same as the width of the inner pushing portion 21. That is, since the inner pushing portion 21 and the outer pushing portion 26 are positioned vertically to each other to form the unit body of one pushing portion 20, they can be formed to have the same width.

The outer propulsion unit 26 may include a first propelling unit 26a and a second propelling unit 26b.

The first propelling portion 26a may include a second support 27. The second support table 27 may be a plate-shaped member, and may protrude from one surface of the first propelling unit 26a toward the center of the vertical sphere. At this time, the first support 23 and one surface of the first support 23 may be opposed to each other.

The length of the second support 27 may be longer than the width of the second support 27 and the length of the second support 27 may be greater than the width of the first pushing portion 26a And may be longer than the length of the first support 23.

A bracket 24 connected to the first pushing portion 26a and supporting the second support 27 may be installed on the upper portion of the second support 27.

The second pushing portion 26b is connected to the lower portion of the first pushing portion 26a and can be connected through a screw member 25, that is, a bolt and a nut.

The screw member 25 protrudes slightly from the second propelling portion 26b toward the ground, and a gap is formed between the ground and the outside of the first propelling portion 26a to reduce the frictional force somewhat. That is, the portion of the screw member 25 protrudes from the periphery and may serve to reduce friction of the outer circumferential surface of the propelling portion 20 like the tip shoe 22. As another example, the first propelling section 26a and the second propelling section 26b may be welded to each other and connected.

The second pushing portion 26b may be located outside the inner pushing portion 21 to cover the inner pushing portion 21.

The second propelling unit 26b is not connected to the inner propelling unit 21 but the inner propelling unit 21 and the second propelling unit 26b may be installed so as to be in close contact with each other so as not to allow the adherence of the gravel. At this time, the second pushing portion 26b may be fitted into the connecting groove 21a formed in the inner pushing portion 21. [ The second pushing portion 26b may be inserted into the inner pushing portion 21 through the connecting groove 21a and protrude from the inner pushing portion 21 at a constant height. Therefore, when the inner pushing portion 21 moves in the ground by the length of the protruded second pushing portion 26b, the second pushing portion 26b pushes the ground and underground water of the surrounding ground into the inner pushing portion 21, So that it can be prevented from flowing inward.

The propulsion unit 20 includes a propulsion unit 30 and the propulsion unit 30 may include a first propulsion unit 31 and a second propulsion unit 32. [

The propulsion unit 30 applies pressure to the support unit 10 and inserts the propulsion unit 20 into the ground with a repulsive force generated at this time. The driving force of the propulsion unit 30 may be generated in a cylinder structure, and the propulsion unit 30 may be a hydraulic cylinder. Accordingly, the propulsion unit 30 can be connected to the hydraulic generator 130 (see FIG. 1) via the hydraulic hose 135 as described above.

The first propelling unit 31 may be located between the first support 23 and the second support 27. One end of the first propelling unit 31 is connected to the first support 23, The other end of the first propelling unit (31) may be in contact with the second support base (27). Accordingly, the first propeller unit 31 can be supported by the second propeller unit 26b and press the first propeller 23 to insert the inner propeller unit 21 into the ground.

The second propelling unit (32) is installed on the opposite side of one surface facing the first support (23). Therefore, the first propeller unit 31 and the first propeller unit 32 may be located at a virtual center line connecting the centers of the first and second support members 24 and 27.

One end of the second propelling unit 32 may be connected to the second support 27 and the lining cap 40 may be connected to the other end.

The lining cap 40 can be installed under the water hole lining structure formed of concrete. The second propelling unit 30 disperses a concentrated load applied to the lower part of the water jetting unit 40 to transfer the load safely Can be performed.

The present invention can be applied to a multi-axis excavation system in which a construction of a multi-axis lining structure and a multi-axis excavation can be performed together.

Hereinafter, a method for forming a multi-wall lining structure using the previously described multi-hole drilling system will be described in detail.

5 is a schematic illustration of a multi-lane lining structure according to one embodiment of the present invention.

As shown in FIG. 5, the multi-lane lining structure according to an embodiment of the present invention includes a plurality of straight hole lining units inserted into holes in the ground and continuously installed in the depth direction from the surface of the ground to the inside, .

Each of the multiple straight lining units includes a skeletal member and the ends of the skeletal members adjacent in the depth direction can be connected to each other.

And a backfill wall connecting the vertical lining unit and the side wall may be formed between the vertical lining unit and the side wall of the ground exposed in the hole formed in the ground.

The backfill material wall may be integrally connected to the backfill material wall, and may further include a backfill material extension portion protruding from the backfill material wall toward the water straightening lining unit. At this time, the backfill extending portion can be embedded in the multi-wall lining unit.

The upper and lower portions of the multi-wall lining units, e.g., the first multi-wall lining unit and the second multi-wall lining unit, adjacent to the depth direction of the ground, may have a structure in which the protrusions and the depressions engage with each other. At this time, the lower part of the first water straightening lining unit, which is located relatively shallow relative to the surface of the ground, has a first depression Q1 and a first projection P1, The upper part of the unit has a second projection P2 that engages with the first depression and a second depression Q2 that engages with the first projection P1 and the second projection P2 has the first projection P2 , And the width L2 of the second protrusion may be shorter than the width L1 of the first protrusion.

Hereinafter, with reference to the drawings, a method of forming the previously described multi-wall lining structure will be described in detail.

FIGS. 6 to 12 are schematic views illustrating a method of constructing a multi-wall lining structure according to an embodiment of the present invention.

First, as shown in FIG. 6, a base portion 11 of the support portion 10 is provided on a ground 200 on which a multi-lane lining structure is to be formed. The column portion (13) to which the pressing portion (14) is connected is vertically installed on the base portion (11). The supporting portion 10 is installed so as to surround the outside of the vertical lining structure in the ground where the vertical lining structure is to be installed. The base portion 11 may be provided as a concrete structure on the surface thereof and the column portion 13 may be formed of the H-beam and installed in the base portion 11. [ The pressing portion 14 may be an H-beam like the column portion and may be screwed to the column portion 13. [

7, the inner pushing portion 21 is provided along the inner side of the support portion 10, and the inner pushing portion 21 can be provided in the same quantity as the number of the pillar portions 13. [ The plurality of inner pushing portions 21 can be welded to each other and the first pushing device 31 is provided between the inner pushing portion 21 and the pushing portion 14. [

The second propelling portion 26b of the outer pushing portion inserted into the connecting groove of the inner pushing portion 21 may be located outside the inner pushing portion 21. [

The first propelling unit (31) is connected to the first support (23) of the inner propelling unit (21). When the first propeller unit 31 is driven, the first propeller unit 31 is supported and repelled by the presser unit 14 so that the inner propeller unit 21 and the second propeller unit 26b are inserted together into the ground do. When the inner pushing portion 21 is inserted into the ground, the first pushing device portion 31 is returned to the original position and the pushing portion 14 is moved below the pillar portion 13 so as to abut the first pushing device portion 31 The inner pushing portion 21 is inserted into the ground repeatedly in the same manner.

The propulsion unit can be press-fitted only when a large indentation load is applied due to friction of the surface. Therefore, the outer pushing portion can be inserted after the inner pushing portion 21 having a relatively small thickness and small frictional force is first inserted into the ground to reduce the frictional force.

Meanwhile, as in the present invention, when the pushing portion is inserted before excavating the ground, it is possible to prevent the inflow of the earth and groundwater from the excavation surface without additionally installing the truss construction at the time of constructing the straight lining structure.

8, the pushing portion 14 is moved to the upper end of the pillar portion 13 and the second pushing portion 26b inserted into the ground with the inner pushing portion 21 is moved to the first pushing portion (26a). The second propelling unit 32 is provided between the second support 27 formed on the first propelling unit 26a and the pressurizing unit 14, The second propulsion unit 32 can insert the outer propulsion unit 26 and the inner propulsion unit 21 together into the ground while repelling the pushing unit 14. [

The first propeller unit 31 and the second propeller unit 32 can be alternately driven. When the friction of the ground is small, only the second propeller unit 32 is driven to insert the propeller unit more quickly .

Thereafter, the inside of the region surrounded by the propelling unit 20 is removed by using an excavator (not shown), and a steel mold is installed to surround the exposed ground. The steel formwork may be spaced apart from the exposed outer pushing portion to form a space S forming the straightening lining structure. The form 50 can be supported by a steel structure such as an H beam, and can be installed in a normal process, so a detailed description thereof will be omitted.

Then, the lining cap 40 is connected to the second propelling device 32, and the foam member 60 is placed on the lining cap 40.

The foam member 60 may be made of a foam material such as styrofoam. The foam member 60 has a first portion A1 and a second portion A2 having different thicknesses and the second portion A2 may have a thickness that is relatively thicker than the first portion A1. The second portion A2 has an inclined surface, and the inclined surface can be formed by increasing the thickness away from the first portion A1.

The second portion A2 may have a through hole 6 passing through the inclined surface. A concrete injection pipe (not shown) for injecting concrete may be inserted into the through hole 6.

Thereafter, the skeletal member 70 is placed on the foam member 60. The skeletal member may be fixedly inserted into the foam member 60 with a lower end thereof. At this time, a spacing member (not shown) may be provided on the top of the skeleton member so that the skeleton member can be positioned at a predetermined position.

The skeletal member 70 includes a pair of parallel pillar members 7a and a plurality of connecting members 7b connecting between the pillar members, and may have a meshed structure. The sled member 70 may be made of a metal such as iron.

A thread (not shown) may be formed at one end and the other end of the pillar member 7a to connect the pillar member 7a in series. . The thread formed at one end of the skeletal member 70 is inserted into the foam member 60 so as not to be exposed to the outside.

On the other hand, a backfill material injection pipe 65 may be installed across the space S. The backfill material injection pipe 65 may be located at a point bisecting the space S approximately. Both holes of the backfill material injection pipe 65 are provided so as to be in contact with the mold 50 and the second propelling unit 26b or outside the mold 50 so that the both holes are not buried by the concrete.

Next, as shown in Fig. 9, a concrete injection pipe (not shown) is inserted into the through hole of the foam member, and then concrete is injected. The concrete is injected into the lower portion of the space S and the space S between the form 50 and the second propelling portion 26b is filled from the lower portion to the upper portion. Concrete can be injected by pressure. At this time, air can be discharged through the exhaust hole 67 positioned above the space S, thereby filling the space S with concrete without air, and minimizing the occurrence of slime.

Thereafter, the concrete is cured to complete a single miter lining unit. For convenience of explanation, the first male straight lining unit U1 and the second male straight lining unit are referred to as completed.

Next, as shown in Fig. 10, the first propeller unit and the second propeller unit are driven to separate the propeller unit from the foam member 50. Then, as shown in Fig. At this time, a back space may occur between the first water jetting unit lining unit U1 and the ground 200 due to the movement of the propulsion unit.

A backfill material is injected through the backfill material inlet 65 so that the first water jet lining unit U1 does not move downward and the backfill material is filled with backfill material to form the backfill material wall. The backfill wall connects the ground and the vertical lining unit to secure the vertical lining unit to the ground. The backfill material can fill part of the backfill material injection tube as well as the back space between the waterjet lining unit and the ground. At this time, a fixing bolt 52 may be installed on the injection port where the backfill material is injected to support the mold.

Hereinafter, the first backfill material wall UU1 and the second backfill material wall are referred to as the backfill material wall formation order.

Next, as shown in FIG. 11, the foam member exposed by the movement of the propulsion unit is removed, and the fixing bolt 52 provided on the bag filter injection tube is released, and the mold is lowered by a predetermined length downward.

The foam member can be easily removed with a foamable material, and may be damaged at the time of removal to make reuse impossible. At this time, the thread of the skeletal member embedded in the foam member is exposed, and one end of the skeleton member exposed to the outside of the first manual straightening lining unit U1 is connected to the coupler 72 ).

9 and 10, a concrete injection pipe (not shown) is inserted into the through hole 6 of the foam member 60, and then the concrete is injected and cured to form the second vertical straight lining unit U2).

Next, as shown in FIG. 12, the propulsion unit is driven to be inserted into the ground, and backfill material is injected into the rear space formed by removing the second propelling unit to form the backfill material wall UU2, U2) to the ground.

Next, as shown in Fig. 5, the processes of Figs. 9 to 11 described above are repeated to complete a multi-wall lining structure 600 in which a plurality of multi-wall lining units are stacked.

As described above, according to the embodiment of the present invention, even when the soil removal using the excavator is performed, the propulsion unit can be inserted without being affected. In other words, the propulsion unit can be inserted independently into the ground regardless of the construction of the multi-lined lining structure or the internal excavation of the vertical axis, and the propulsion unit is inserted into the ground to continue the excavation without threat of groundwater leakage and collapse of the earth . As the excavation does not interfere with the construction of the mill lining structure, the excavation or the construction of the mill lining structure can be carried out according to the situation of the site, so that the construction period can be shortened.

Also, conventionally, when a straight lining structure is formed into a segment type, it is necessary to manufacture a segment so as to match the size of a vertical straight segment of the same standard, and then connect it with a connection bolt. However, in the embodiment of the present invention, since the water jet lining structure is formed by using the concrete using the propulsion device, the water jet lining structure can be installed without being influenced by the standard.

While the invention has been shown and described with reference to certain preferred embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the following claims. Those who are engaged in the technology field will understand easily.

6: Through hole 10: Support
11: base part 13:
14: pressing portion 20:
21: inner pushing portion 21a: connecting groove
22: leading shoe 22a: connecting portion
22b: contact surface 23: first support
24: Bracket 25: Connecting bolt
26: outer propulsion unit 26a: first propulsion unit
26b: second propelling unit 27: second support
30: Propulsion unit 31: First propulsion unit
32: second propelling device 40: lining cap
50: die 52: fixing bolt
60: foam member 65: backfill material injection tube
67: exhaust hole 70: skeletal member
72: Coupler 1000: Waterjet drilling system
110: control unit 120: generator
130: Hydraulic generator 135: Hydraulic hose
150: excavation part 600:
U1, U2: vertical unit UU1, UU2: backfill wall

Claims (12)

A method for forming a straight lining structure on a ground using a propulsion unit and a propulsion unit connected to the propulsion unit,
Driving the propulsion unit to insert the propulsion unit into the ground,
Exposing one surface of the propulsion unit by excavating an inner ground of the propulsion unit,
Installing a mold that is spaced apart from the propelling unit by a predetermined distance to form a space,
Injecting a concrete into the space by inserting a concrete injection pipe into a lower portion of the space,
Curing the concrete to form a first vertical straightening unit
Wherein the method comprises the steps of: The method of claim 1,
After the step of installing the mold,
Installing a skeletal member in the space
Placing a foam member in a lower portion of the space to block the lower portion of the space
Further comprising:
And one end of the skeletal member is inserted into the foam member. 3. The method of claim 2,
After the step of forming the first vertical straightening unit,
Spacing the propulsion unit and the propulsion unit from the first vertical straight lining unit,
Forming a backfill wall by injecting a backfill material into the rear space from which the propelling portion has been removed
Wherein the method comprises the steps of: 4. The method of claim 3,
After the step of installing the mold,
Installing a backfill material injection pipe connected to the propulsion unit from the outside of the mold across the space
Lt; / RTI >
And the backfill material is injected into the rear space through the backfill material injection tube. 5. The method of claim 4,
Forming a second vertical straight lining unit below the first vertical straight lining unit
Further comprising:
Wherein the second water straightening unit is formed in the same manner as the first water straightening unit. 3. The method of claim 2,
The foam member includes a first portion having a first thickness, a second portion having a second thickness greater than the first portion,
Wherein the second portion has an inclined surface that is gradually reduced in thickness away from the mold so as to be inclined relative to one surface of the first portion. The method of claim 6,
Wherein the concrete injection pipe is inserted into an injection hole formed through the inclined surface of the foam member. The method of claim 1,
The propulsion unit includes a plate-shaped support protruding from the one surface of the propulsion unit toward the propulsion unit,
Wherein the propulsion unit is a hydraulic cylinder connected to a support and providing a force for the propulsion unit to be inserted into the ground. In a straight-lining lining structure inserted into a vertical hole of a ground,
A plurality of vertical straight lining units, each of which is provided continuously in the depth direction from the surface of the ground to the inner side,
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And the end portions of the skeletal members adjacent to each other in the depth direction are connected to each other. The method of claim 9,
A backfill wall formed between the multi-wall lining unit and a side wall of the ground exposed through the hole, the back wall wall connecting the multi-wall lining unit and the side wall,
A backfill member extending from the backfill wall toward the backgate lining unit and embedded in the backgate lining unit,
Further included are straight lining constructions. The method of claim 9,
The lower part of the first vertical straight lining unit, which is located shallower relative to the surface of the ground, has a first depression and a first projection, and the upper part of the second vertical straight lining unit, A second protrusion engaging with the first depression and a second depression engaged with the first protrusion,
Wherein the second projection is located further inside the vertical sphere than the first projection. 12. The method of claim 11,
Wherein the width of the second protrusion is less than the width of the first protrusion.

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