KR100575653B1 - Horizontal pressed pipe install apparatus for underground structures construction and horizontal pressed pipe install method using the same - Google Patents

Abstract

The present invention relates to a horizontal pipe press-fitting device and a horizontal pipe construction method using the same, comprising a propeller, an assembling machine and a movable fastener for underground construction of underground pipes for the construction of underground structures. It is constructed to be constructed in such a way that the horizontal pipe (horizontal steel pipe or propulsion steel pipe) can be pushed in and excavated in the ground while moving forward, thereby pushing the steel pipe together with a hydraulic jack at the back of the propulsion base at the same time. In addition to the relatively small propulsion force, horizontal pipe press-fitting construction is possible, as well as faster and safer construction, the limitation of propulsion length and diversion direction, the problem that the propulsion work area should be solved, and the small reaction wall It can also be used as a tool, and there is almost no overload The present invention relates to a horizontal pipe press-fitting device and underground pipe construction method for constructing underground structures that can solve the settlement problem of ground.

Underground structure, horizontal pipe, indentation device, propeller, assembly machine, mobile fixing device, hydraulic jack, hydraulic cylinder, horizontal steel pipe, segmented steel pipe, PC (precast concrete) pipe, grouting

Description

Horizontal pressed pipe install apparatus for underground structures construction and horizontal pressed pipe install method using the same}             

1a and 1b is a side view showing a horizontal tube indentation apparatus according to the present invention,

2A to 2E are cross-sectional views taken at each part of FIG. 1A,

3a to 3i is a working state diagram showing a first embodiment of a horizontal pipe construction method according to the present invention,

4a to 4d is a working state diagram showing a second embodiment of the horizontal pipe construction method according to the present invention,

5 is an assembled state of the segment-assembled steel pipe in the present invention,

6 is a working state diagram showing a third embodiment of the horizontal pipe construction method according to the present invention,

7 is a perspective view showing a PC tube assembled in the present invention,

8 is a working state of the grouting construction in the present invention,

9 is a state in which the bolt is fastened to the inlet of the injection sleeve after the grouting construction in the present invention,

10a to 10c is a construction state showing several examples of grouting construction made according to the construction and arrangement of the horizontal tube in the present invention.

<Explanation of symbols for the main parts of the drawings>

100: horizontal pipe indentation device 110: propeller

120: assembly machine 130: movable fixture

The present invention relates to a horizontal pipe press-fitting device for construction of underground structures and a horizontal pipe construction method using the same, and more particularly, comprising a propeller, an assembling machine and a movable fastener, and moving the propeller and the mobile fastener step by step inside the horizontal pipe. The present invention relates to a horizontal tube press-fitting apparatus for press-fitting a horizontal tube and a method of constructing a horizontal tube using the same.

In general, when laying various pipes in the basement for the construction of underground structures such as water / sewer pipes, gas pipes, communication lines, electric pipes, underground parking lots, underground shopping malls, subway tunnels, and communal tunnels, It is buried in the excavation method, and when the ground is excavated to bury the tube in the basement of roads, railways, etc. through which vehicles or trains pass, it causes a lot of obstacles in traffic.

In addition, since the excavated soil must be piled up at the construction site, the accumulated soil occupies the road, which prevents traffic, and the excavated soil is scattered around the construction site. If there is water in the muddy water flows to the road to further contaminate the surrounding construction site, in the case of the railroad will be a problem that the passage of the train is impossible during the construction period.

And, even if the ground is excavated, the pipe is buried, and then the ground is backfilled with the excavated soil, and the compaction is carried out. As the ground at the point where the pipe is buried is settled over time, it causes various problems, such as causing inconvenience to the passing vehicle.

In addition, the ground excavation method as described above is a cost-effective problem that takes a lot of manpower and time, as well as a long construction period and a lot of construction costs.

Therefore, as a solution to the problems of the ground excavation method, a method of horizontally type the steel pipe and a method of hydraulically pushing it has been proposed.

Here, the former type of steel pipe type is a method of pressing the steel pipe with a hammer or the like, which has been applied to the type of steel pipe of relatively small diameter in soft ground such as clay material with weak coking force, but the type of steel pipe according to the hammering direction Not only does the direction change, but the type of steel pipe is oriented toward the weak ground resistance (reaction force), so the steel tube is not typed straight toward the type direction to be buried. I had.

As a result, due to these problems, the actual construction site for embedding steel pipe avoids the steel pipe type method, and the larger the diameter is, the larger the size and weight of the hammer must be. It is also pointed out as one of the reasons for avoiding.

Meanwhile, the conventional steel pipe press-fit method is a method of pushing a steel pipe by pushing it using a hydraulic jack. Although there are several examples of the steel pipe press-fit method, the NTR method (New Tubular Roof Method) of constructing a huge structure underground using the steel pipe is used. For example, briefly describe the process of press-fitting steel pipe construction as follows.

The NTR method is a method of injecting steel pipes from the oscillation unit for constructing underground structures and excavating the interior, and installing the facilities.In order to press-fit steel pipes, the geological survey, underground obstacle research, and preparation for construction are completed. Install work tools (forward base, propulsion base) and reach in the installation area, and install the reaction force wall calculated in accordance with the size and direction of the underground structure at the predetermined position in the work area, and then install the steel pipe pedestal and the propulsion hydraulic system. Install.

After accurate positioning, after the installation of horizontal steel pipe, press-fitting direction adjusting device is attached to the leading pipe, and the leading pipe is connected to the propulsion hydraulic system to complete the preparation work for horizontal steel pipe pressing and drilling.

Subsequently, the steel pipe is accurately installed at the propulsion press-fitting position, and then press-fitted in stages using a hydraulic jack and a propulsion auxiliary pipe, and the soil inside the propulsion pipe is excavated and transported out of the pit using a rail or a transport vehicle.

At this time, each pipe is inspected by a laser instrument for quality control of the propulsion pipe. Repeat the process of correcting the error with the press-fitting device attached to the lead pipe.

Then, the connection part of the steel pipe and the rear steel pipe press-fitted behind the leading pipe is connected to each other by welding, and after all the press-fitting construction of the steel pipe is completed, the out-of-gang grouting is performed.

 However, in the conventional horizontal steel pipe construction process for constructing the underground structure made as described above, there were the following problems.

Conventional methods press-excavate steel pipe with 500 ~ 1000 ton hydraulic jack using reaction force wall at propulsion base, add steel pipe step by step each time the lead pipe proceeds, and then continue to add several pipes Hydraulic pipes are pushed and pushed together at the rear propulsion base.

Therefore, a large hydraulic jack that can provide a large propulsion force is required because one hydraulic jack must push several steel pipes connected at the same time at the same time, and also the propulsion reaction force due to friction of the steel pipe during press-in propulsion acts to limit the propulsion length. There is a problem of receiving (up to 60m).

And, it is not easy to switch the excavation direction, there is a disadvantage that the propulsion work tool should be wide.

In addition, the excavation speed is very slow and the steel pipe welding time is long, so the air is long, and the reaction wall must be built according to the propulsion reaction force, so that the size of the reaction force is increased, and the ground improvement and the support piles are required behind the reaction wall.

In addition, the welding breakage and separation of the steel pipe connection due to the long side propulsion pressure may occur, and there is a problem that the ground surface soil subsidence occurs severely because the amount of overfiltration occurs in the gravel layer, amber stone, soft ground according to the change of underground soil ( Deformation of the surrounding ground occurs).

Therefore, the present invention has been invented to solve the above problems, it consists of a propeller, an assembling machine and a movable fastener for the construction of underground horizontal pipes for the construction of underground structures, and the propeller and the mobile fasteners move forward step by step inside the horizontal pipe However, it can be constructed in such a way that the horizontal pipe (horizontal steel pipe or propulsion steel pipe) can be pushed in and excavated in the ground, compared to the conventional fixed propulsion method in which steel pipes are pushed together by hydraulic jacks using a reaction wall at the rear propulsion base. It is possible to press-fit horizontal pipes with a relatively small propulsion force, and also to enable faster and safer construction, to solve the limitations of the propulsion length, the diversion direction, and the problem that the propulsion work area should be wide. Work on the road at the same time there is little To provide a horizontal pipe horizontal pipe and press fitting system using the same construction methods for building underground structures that can solve half the problem settlement has its purpose.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Horizontal pipe indentation apparatus for building underground structures according to the present invention,

A plurality of clamping hydraulic jacks protruding outward from the housing and a plurality of hydraulic cylinders connected to the main housing of the following movable fixture by pistons for forward / backward operation are mounted inside the main body housing. A thruster configured to be integrally fixed to the horizontal tube by simultaneously pressing the inner circumferential surface of the horizontal tube outside the main body housing;

An assembly unit in which a main body housing is integrally integrated with the propeller main housing and equipped with a plurality of assembling jacks for assembling a steel pipe segment or a PC segment into a horizontal tube outside the housing inside the main body housing;

A plurality of clamping hydraulic jacks protruding out of the housing are mounted inside the main body housing so that the clamping pads of the respective clamping hydraulic jacks can be integrally fixed to the horizontal pipe or the propulsion steel pipe by simultaneously pressing the inner circumferential surface of the outside of the main housing. A movable fixture which is configured to be separated in the front to propel forward by the actuation of a piston of the hydraulic cylinder connected from the propeller for the press-in excavation of the horizontal or propulsion steel pipe;

It includes.

In addition, the construction method of a horizontal pipe for building underground structures according to the present invention, as an embodiment,

(a) moving and installing a horizontal pipe indentation device including a propeller, an assembling machine, and a movable fastener in a work tool;

(b) then mounting the first horizontally pressurized horizontal steel pipe to the movable holder, wherein the clamping hydraulic jacks of the movable fixture simultaneously press the inner circumferential surface of the horizontal steel pipe, thereby fixing the movable fixture to the inside of the horizontal steel pipe;

(c) then pressurizing the horizontal steel pipe by actuating the hydraulic cylinder of the propeller forward with the propeller supported by the reaction wall in the working tool to propel the movable fixture and the horizontal steel pipe forward;

(d) thereafter pitting the inside of the horizontal steel pipe and inserting a new horizontal steel pipe of smaller diameter into the horizontally pressurized horizontal steel pipe, and then using a clamping hydraulic jack of the propeller, the propeller is integrated into the horizontally pressurized horizontal steel pipe. Simultaneously fixing the movable fixture to the inside of the small diameter horizontal steel pipe using the clamping hydraulic jacks of the movable fixture;

(e) then actuating the hydraulic cylinder of the propeller to propel the mobile fixture and the horizontal steel pipe of small diameter forward to press-fit the horizontal steel pipe of the small diameter underground;

(f) the step of completing the advance and excavation and construction of the small diameter horizontal steel pipe step by repeating the propulsion of the propeller and the propulsion of the movable fixture, the excavation in the horizontal steel pipe;

(g) then inserting a new horizontal steel pipe of smaller diameter and completing the construction by the method of steps (d) to (f);

(h) repeating step (g) to the arrival port;

Characterized in that it comprises a.

In addition, the horizontal pipe construction method for constructing underground structures according to the present invention, as another embodiment,

(a ') moving and installing a horizontal pipe indentation device including a propeller, an assembling machine, and a movable fastener in the working tool;

(b ') mounting the propulsion steel pipe to the mobile fixing device, wherein each clamping hydraulic jack of the mobile fixing device simultaneously compresses the inner circumferential surface of the propelling steel pipe to fix the mobile fixing device to the inside of the propelling steel pipe;

(c ') after the propeller is supported by the reaction wall in the working tool to operate the hydraulic cylinder of the propeller to push forward the propulsion steel pipe by underground propulsion of the movable fixture and the propulsion steel pipe;

(d ') assembling the steel pipe segment or the PC segment into a horizontal pipe by using an assembling machine in the space inside the propulsion steel pipe formed after the pitted by moving the horizontal pipe indentation apparatus after the inside of the propulsion steel pipe;

(e ') integrally fixing the propeller to the inside of the assembled horizontal pipe by using the clamping hydraulic jacks of the propeller, and simultaneously fixing the movable fixture to the inside of the propulsion steel pipe by using the clamping hydraulic jacks of the movable holder;

(f ') then actuating the hydraulic cylinder of the propeller to push forward the propulsion steel pipe by pushing forward the movable fixture and the propulsion steel pipe;

(g ') then repeating steps (d') to (f ') to the arrival port;

Characterized in that it comprises a.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

The present invention relates to a horizontal pipe press-fitting apparatus for construction of underground structures and a horizontal pipe construction method using the same, comprising a propeller, an assembling machine and a movable fixing device, and injecting the horizontal pipe while the propeller and the movable fixing device move in stages in the horizontal pipe. It relates to a horizontal tube press-fitting apparatus and a method for constructing a horizontal tube using the same.

The horizontal pipe press-fitting apparatus of the present invention and the horizontal pipe construction method using the same solve various problems coming from the conventional fixed propulsion method in which the steel pipes are press-propelled by pushing the steel pipes together with a hydraulic jack at the rear propulsion base by using a reaction wall. As disclosed in order to, in particular, the horizontal tube indentation apparatus of the present invention is to push forward another horizontal tube fixed to the movable fixture while the movable fixture is moving forward from the propeller while the propeller is fixed inside the horizontal tube installed in advance It is configured to be press-molded.

First, the horizontal pipe indentation apparatus of the present invention will be described in detail with reference to the accompanying drawings.

1A and 1B are side views illustrating a horizontal tube indentation apparatus according to the present invention, and FIGS. 2A to 2E are cross-sectional views taken from the respective parts of FIG. 1A.

FIG. 1B is a front view of the propeller 110 with the movable stopper 13 moving forward by the piston 113a forward operation of the hydraulic cylinder 113 connecting between the front movable stopper 130 and the rear thruster 110. It shows the (promoted) state.

As shown, the horizontal tube indentation apparatus 100 of the present invention is composed of three parts, the propeller 110, the assembly machine 120 and the movable fixing device 130, the propeller 110 is located at the rear, A movable fixture 130 is located at the front, and an assembly machine 120 is positioned between the propeller 110 and the movable fixture 130.

The horizontal pipe indentation device 100 of the present invention is to perform all the operations while moving forward in the horizontal pipe (1,2), while the propeller 110 and the movable fixture 130 moves forward step by step It is configured to press-fit, and more specifically, the movable fixture from the propeller 110 in a state where the propeller 110 is fixed inside the horizontal pipe (horizontal steel pipe or segment-assembled steel pipe or PC pipe) (2). 130 is pushed forward by pushing the horizontal steel pipe or the propulsion steel pipe (1) fixed to the movable fixing device 130 while moving forward.

In the above-described configuration, the propeller 110 will be described first, and the clamping pads 112a and 115a protrude outwardly from a part of the main body housing 111 having a cylindrical structure. Presses the inner circumferential surface of the outer horizontal tube 2 of the main body housing 111, thereby clamping the plurality of clamping hydraulic jacks 112 and 115 and the main body housing 131 of the movable holder 130. A plurality of hydraulic cylinders 113 connected by a piston 113a operating backward are mounted.

That is, the propeller 110 is assembled inside the horizontal pipe (2), that is, first press-fitted horizontal steel pipe or segment (segment) outside the main body housing 111 by using a plurality of clamping hydraulic jacks 112, 115 as described below It is configured to be fixed to the interior of the steel pipe or PC (Precast Concrete) pipe, wherein the clamping pads (112a, 115a) of each clamping hydraulic jack (112, 115) by pressing the inner circumferential surface of the horizontal pipe (2) by pushing the propeller ( 110) The whole is fixed to the position inside the horizontal pipe (2).

Figure 2a is a view showing the rear of the propeller 110, the clamping hydraulic jack 112 is mounted in three directions inside the rear of the main body housing 111, each clamping hydraulic jack 112 is a radial direction of the main housing 111 As the front / rear operation is performed, the front end of the jack protrudes to the outside of the main housing 111, and the clamping pad 112a attached to the end of the jack compresses the inner circumferential surface of the horizontal tube 2.

The clamping pads 112b of the respective clamping hydraulic jacks 112 protrude out of the main housing 111 through corresponding entrances 111a formed at corresponding positions of the main housing 111.

In the middle of the propeller 110, as shown in FIG. 2B, the wheel 114, which is a moving means, is mounted at the lower end of the main body housing 111, and the entire apparatus 100 is used by using the wheel 114. It is possible to move back and forth within the horizontal tubes 1 and 2.

In addition, the hydraulic cylinder 113 is mounted inside the main body housing 111 in the middle of the propeller 110, the piston 113a of the hydraulic cylinder 113, the front end of the movable fixture 130 As the piston 113a of the hydraulic cylinder 113 moves forward and backward in the longitudinal direction of the apparatus 100, the movable fixture 130 moves forward from the thruster 110 (forward propulsion). ) Or reverse.

Referring to FIG. 2B, it can be seen that the hydraulic cylinders 113 are mounted on the upper and left and right sides of the main body housing 111 so that a total of three hydraulic cylinders 113 are mounted. However, the number or positions of the hydraulic cylinders installed are Changes are possible.

In addition, Figure 2c is a view showing the whole of the propeller, the clamping hydraulic jack 115 is mounted in the four directions inside the main body housing 111, these also bar to move forward / backward in the radial direction of the main body housing 111 The clamping pad 115a attached to the tip of the jack presses the inner circumferential surface of the horizontal tube 2 while the jack tip protrudes outward through the entrance 111b of the main body housing 111 by moving forward.

2A and 2C, the clamping hydraulic jacks 112 are mounted on the upper and left and right sides at approximately 120 ° intervals at the rear of the main housing 111 of the propeller 110 to mount a total of three clamping hydraulic jacks 112. The clamping hydraulic jacks 115 are mounted on all of the main body housings 111 of the propeller 110 in four directions of up, down, left, and right, and thus, a total of four clamping hydraulic jacks 115 are mounted.

As such, the number and installation positions of the clamping hydraulic jacks 112 and 115 installed at the rear and the thruster 110 may be appropriately changed within a range capable of serving the purpose, and FIGS. 2A and 2C are propellers. Only a preferred installation example of the clamping hydraulic jack is shown, the present invention is not limited thereby.

Of course, each of the clamping hydraulic jacks 112 is operated at the same time to push the inner circumferential surface of the horizontal tube (2) strongly in each direction to form a horizontal tube (2), in this state the entire propeller 110 is a horizontal tube (2) ) Will be fixed inside.

In addition, as the lower clamping hydraulic jacks 112 and 115 push the inside of the horizontal tube 2 as above, the entire propeller 110 is slightly lifted upward from the inside of the horizontal tube 2, and the propeller ( 110, the lower wheel 114 is completely lifted from the inner peripheral surface of the horizontal tube (2).

On the other hand, Figure 2d is a view showing the granulator, the granulator 120 is used when the method of the second embodiment and the third embodiment in the construction method of the present invention described later.

The granulator 120 is configured to be integrated into the front of the propeller 110, the assembly body housing 121 is provided in a cylindrical structure is integrally connected to the propeller body housing 111 in the rear, and will be described later A plurality of assembly jacks 122 are mounted which are used to assemble a steel pipe segment or a precast concrete (PC) segment out of the housing in the form of a tube.

A plurality of entrances and exits 121a are formed in the main body housing 121 of the assembling machine 120 along the circumference, and the jack 122 for assembling is operated out of the main body housing 121 through the entrances 121a. The steel pipe segment or PC segment is assembled in the form of a pipe in the propulsion steel pipe.

And, Figure 2e is a view showing a movable fixture, the movable fixture 130 is a structure separated from the propeller 110 and the assembly machine 120, through the hydraulic cylinder 113 and the piston 113a It is connected to the rear thruster 110, and a plurality of clamping hydraulic jacks 132 are mounted inside the body housing 131.

The clamping hydraulic jack 132 of the movable fixture 130 has the same configuration as the configuration of the clamping hydraulic jacks 112 and 115 in the propeller 110, the role in the movable fixture 130 and its operating state is also a propeller It is almost the same as my clamping hydraulic jack.

That is, the clamping hydraulic jack 132 of the movable fixture 130 also moves forward / reverse in the radial direction of the main body housing 131, so that the front end of the jack through the entrance 131a of the main body housing 131 The clamping pad 132a installed at the tip of the jack while being protruded into the horizontal steel pipe or the propulsion steel pipe 1 is pressed against the inner circumferential surface thereof.

However, the clamping hydraulic jacks 112 and 115 of the propeller 110 serve to fix the entire propeller 110 to the inside of the constructed horizontal pipe 2, that is, the horizontal steel pipe or the segment-assembled steel pipe or PC pipe of the constructed rear one. The clamping hydraulic jack 132 of the movable fixing unit 130 serves to fix the movable fixing unit 130 inside another horizontal steel pipe or propulsion steel pipe 1 which is pressurized underground as described in detail later. .

Referring to FIG. 2E, clamping hydraulic jacks 132 are mounted in four directions of up, down, left, and right as in all of the propellers 110 in the main body housing 131 of the movable holder 130, so that a total of four clamping hydraulic jacks 132 are provided. You can see that it is installed.

Of course, the number and installation position of the clamping hydraulic jack 132 installed in the movable fixing unit 130 can be appropriately changed within a range that can serve as a desired bar, Figure 2e is a movable fixing unit Only a preferred installation example of the clamping hydraulic jack is shown, the present invention is not limited thereby.

In FIG. 2A to FIG. 2C, reference numeral 111c is a front and rear movement passage provided in the center of the main body housing 111 of the propeller 110. Thus, the main body housing 111 of the propeller 110 is opened downward in the center and thus the front and rear connection passages. It has an internal space of a certain space that serves as a bar, the earth and sand transporting vehicle and the workforce can be moved during the work through the moving passage (111c).

The movement passage is provided in the same form in the main body housing 121 of the assembly 120 and the main body housing 131 of the movable holder 130, as shown by reference numerals 121c and 131c in Figure 2d and 2e, The moving passages 111c, 121c, and 131c of the propeller 110, the assembling machine 120, and the movable fixture 130 are provided in a structure that communicates between the main body housings 111, 121, and 131 in a lower open state, and the apparatus 100 is moved forward and backward. Soil transporting vehicles and workers can move freely.

1A and 1B show a rear horizontal pipe (horizontal steel pipe or segment assembled type) constructed in a state in which the clamping hydraulic jack 132 of the front movable fixture 130 is pressed against the inner circumferential surface of the leading horizontal steel or propulsion steel pipe 1. When the rear thruster 110 fixed to the steel pipe or the PC pipe) (2) pushes the movable fixing device 130 using the hydraulic cylinder 113, the leading horizontal steel pipe or the propulsion steel pipe 1 may be pushed forward. It is shown.

As described above, when the movable fixture 130 is propelled in the state where the propeller 110 is fixed, the repulsive force is to endure the clamping hydraulic jacks 112 and 115 in the propeller 110 by pushing the inner peripheral surface of the pipe 2 as described above. .

Preferably, the clamping pads 112a, 115a, and 132a, which compress the inner circumferential surfaces of the pipes 1 and 2, are mounted on the clamping hydraulic jacks 112, 115, and 132 mounted on the propeller 110 and the movable fixture 130, respectively. Friction members 112b, 115b and 132b for the purpose of installation, and as the friction members 112b, 115b and 132b, metal keys made to be detachable to the clamping pads 112a, 115a and 132a may be used. Can be.

The keys 112b, 115b, and 132b serve to prevent the thrust of the thruster 110 and the movable fixture 130, and between the clamping pads 112a, 115a and 132a and the inner circumferential surfaces of the horizontal tubes 1 and 2. It is installed so as to be crimped in, it is transmitted to the horizontal pipe (1, 2) so that the repelling force transmitted horizontally when the mobile fixing device 130 is propelled so that the propeller 110 and the mobile fixing device 130 is not pushed.

On the other hand, the horizontal pipe construction method of the present invention for constructing a horizontal pipe underground by using the horizontal pipe indentation device as described above will be described as follows.

3A to 3I are working state diagrams illustrating a first embodiment of a horizontal pipe construction method according to the present invention.

In order to construct the horizontal pipe for the construction of the underground structure, the geological survey, the underground obstacle survey, and the preparation for the construction are usually completed, and then the work tool (advancing base) 10 and the reaching port are positioned at the proper positions as shown. Install (20).

In addition, in the work tool 10, facilities such as a reaction force wall 11 and a steel pipe control rail 12 are installed at a predetermined position, and then the horizontal pipe press-fit device 100 of the present invention described above is operated by the work tool 10. ) Move to the right position and install.

After precisely performing the position measurement, the first press-extruded horizontal steel pipe (3a) is mounted on the movable fixture 130 of the horizontal tube press-fit device 100, wherein the movable fixture 130 is a horizontal steel pipe (3a) It should be fixed inside.

That is, the clamping hydraulic jack 132 in the movable fixing device 130 protrudes radially outwardly of the main body housing 131 so that the clamping pad 132 attached to the tip of the jack is a horizontal steel pipe 3a, 2E. 1) to completely fix the movable holder 130 to the horizontal steel pipe 3a by compressing and biting the inner circumferential surface thereof.

After the horizontal pipe press-fit device 100 and the horizontal steel pipe 3a are set to the correct position as described above and the preparation for the horizontal steel pipe press-fit and excavation is completed, the hydraulic cylinder 113 of the propeller 110 is operated to move. The fixture 130 is moved forward from the propeller 110 to press the horizontal steel pipe (3a) into the ground.

As such, when the mobile fixing device 130 is pushed by the hydraulic cylinder 113 in the propeller 110, the horizontal steel pipe 3a is pushed forward and pressurized, and the repulsive force of the repeller 110 is the rear reaction wall ( 11) It is supported and endured.

Subsequently, the earth and sand inside the horizontal steel pipe 3a are excavated and moved to the work tool 10 using the transport vehicle 5, and then taken out to the outside of the gang, and after the clamping state of the movable fixture 130 is released, the horizontal of the present invention is carried out. The pipe indentation device 100 is moved into the horizontal steel pipe 3a.

Here, the transport vehicle 5 for carrying out the soil is connected to the horizontal pipe indentation device 100 through the moving passages 111c, 121c, and 131c provided in the centers of the main body housings 111, 121, and 131 of the horizontal pipe indentation device 100. Move it through.

Thereafter, another horizontal steel pipe (3b) having a relatively small diameter is mounted in the inner space of the work tool (10) to the rear of the horizontal steel pipe (3a) press-fitted into the ground, and then the horizontal pipe press-fitting device into the rear horizontal steel pipe (3b). The propeller 110 is fixed by moving the 100, and the movable holder 130 is fixed to the horizontal steel pipe 3a at the front (fixed before the piston forward operation of the hydraulic cylinder).

Then, by operating the hydraulic cylinder 113 (piston forward operation) by pushing the movable fixing device 130 from the propeller 110, the front horizontal steel pipe (3a) as far as possible to press-excavate, and then press the front horizontal steel pipe (3a) ) Into the horizontal steel pipe (3b) of the small diameter into the fixed fixed movable 130 to the horizontal steel pipe (3b) of the small diameter, and to secure the propeller 110 to the horizontal steel pipe (3a) of the large diameter Again, by pushing the movable fixing unit 130 from the propeller 110, a small diameter of the horizontal steel pipe (3b) little by little.

In this manner, the horizontal steel pipe 3b of the small diameter is continuously pushed and drilled while the propeller 110 and the movable fixing device 130 of the press-fit device 100 are moved forward in the horizontal steel pipes 3a and 3b. Finally, the rear end portion of the small diameter steel pipe 3b positioned forward and the front end portion of the large diameter steel pipe 3a positioned backward are partially overlapped, so that no bentonite is formed therebetween. ) Apply and fill the expansion agent 4b, and then weld and connect the two steel pipes 3a and 3b.

In Fig. 3i, reference numeral 4a denotes a welding material.

As described above, the propeller 110 and the movable fixture 130 of the press-fit device 100 move forward step by step like a slug continuously while repeatedly injecting other steel pipes to construct the steel pipe up to the reaching hole 20. In this way, the new pipe is pushed in from the front, and at the same time, the steel pipe that has already been installed in place is grouted immediately.

Here, the grouting construction process will be described in detail later, for example.

In this way, the horizontal pipe construction method of the present invention described above is a method of propelling the horizontal steel pipe step by step, the step length can be conveniently adjusted according to the material, soil conditions, site conditions, the design according to the surrounding conditions is very It has the advantages of easy construction, fast construction speed and almost no subsidence.

Meanwhile, another embodiment of a method for constructing a horizontal pipe for building underground structures underground using the horizontal pipe indentation device of the present invention consisting of a propeller, an assembling machine and a mobile fixing device will be described below.

4A to 4D are working state diagrams illustrating a second embodiment of a horizontal pipe construction method according to the present invention.

In order to construct the horizontal pipe for constructing the underground structure, first, after completing the geological survey, underground obstacle survey, and construction preparation, which are normally carried out as in the first embodiment, the work tool (advancing base) is placed in the proper position as shown. (10) and the reach opening 20 are provided.

In addition, in the work tool 10, facilities such as a reaction force wall 11 and a propulsion steel pipe control rail 12 are installed at a predetermined position, and then the horizontal pipe indentation device 100 is positioned in the work tool 10. Go to and install it.

Thereafter, after the accurate position measurement, the propulsion steel pipe 6 is mounted on the movable fixture 130 of the horizontal tube press-fit device 100, wherein the movable fixture 130 is fixed inside the propulsion steel pipe 6. To be in a state.

That is, the clamping hydraulic jack 132 in the movable fixture 130 protrudes radially outwardly of the main housing 131 so that the clamping pad 132a attached to the tip of the jack is a propelled steel pipe 6, 2E. 1) by pressing and biting the inner circumferential surface is to completely fix the movable fixing device 130 to the propulsion steel pipe (6).

After setting the horizontal pipe press-fit device 100 and the propulsion steel pipe 6 to the correct position as described above to complete the preparation for the press-fitting and excavation, the hydraulic cylinder 113 of the propeller 110 is operated to move the movable fixture. The propulsion steel pipe 6 is pressed into the ground by allowing the 130 to move forward from the propeller 110.

As such, when the mobile fixing device 130 is pushed by the hydraulic cylinder 113 in the propeller 110, the propulsion steel pipe 6 is pushed forward and pressurized into the ground, and the repulsive force of the repeller 110 is rearward. It is supported by the wall 11 and is endured.

Subsequently, the earth and sand inside the propulsion steel pipe 6 pressurized in the ground is excavated and moved to the work tool 10 using the transport vehicle 5, and then taken out of the gang, and the clamping state of the movable fixture 130 is released. The horizontal pipe indentation device 100 of the present invention is moved forward into the space in the propulsion steel pipe (6).

Next, the steel pipe segments (denoted by reference numeral 7a in FIG. 5) are moved to the assembling machine 120 located in the space within the propulsion steel pipe 6 formed after the earth and sand is carried out using the transport vehicle 5 through the work tool 10. After the assembly, the steel pipe segments 7a are assembled in the form of a pipe by using the granulator 120 to construct the segment-assembled steel pipe 7 inside the propulsion steel pipe 6.

Here, as shown in FIG. 5, the plurality of steel pipe segments 7a are assembled in the form of a pipe in such a manner that a part of the two steel pipe segments 7a overlap each other and then fastened and fixed with a high tension bolt 7b. As a result, the segment-assembled steel pipe 7 is constructed.

Thereafter, the front side movable fixture 130 of the horizontal pipe press-fit device 100 is fixed to the propulsion steel pipe 6 again (fixed before the piston forward operation of the hydraulic cylinder) and at the same time the rear propeller 110 is constructed. It is fixed to the segment-assembled steel pipe (7), and then by operating the hydraulic cylinder 113 (piston forward operation) by pushing the movable fixture 130 from the propeller 110 to press-extrude the propelled steel pipe (6).

Of course, fixing the propeller 110 to the segment-assembled steel pipe (7) is attached to the tip of the jack by projecting the clamping hydraulic jack 112 radially outward of the body housing 111, similar to the movable fixture (130) The installed clamping pad 112a presses and bites the inner circumferential surface of the segment-assembled steel pipe 7 (refer to reference numeral 2 in FIGS. 2A to 2C) positioned inside the propulsion steel pipe 6 to make the propeller 110 segment-assembled steel pipe. It is fixed to (7) completely.

As described above, after the propulsion steel pipe 6 is press-fitted in the ground, the excavation of the soil inside the propulsion steel pipe 6 is carried out again to the outside of the mine, and after the clamping state of the propeller 110 and the movable fixture 130 is released, the propeller ( The segment assembly type steel pipe 7 is continuously constructed in the propulsion steel pipe 6 while moving forward 110 and the assembly machine 120.

As described above, after constructing the segment-assembled steel pipe 7 in a predetermined section, the propeller 110 and the movable fixture 130 are fixed to the segment-assembled steel pipe 7 and the propulsion steel pipe 6, respectively, and then the movable fixture. (130) to push and push the propelled steel pipe (6), and then again to carry out the earth and sand and the construction of the segment-assembled steel pipe (7).

As described above, the propeller 110 and the movable fixture 130 of the press-fit device 100 move and push the propellant steel pipe 6 step by step while moving forward stepwise like a slug and assembling the segment using the assembly machine 120 in the moving position. The process of constructing the shaped steel pipe 7 is repeated to the reaching hole 20.

In addition, in the segment-assembled steel pipe (7) which is exposed to the outer propulsion steel pipe (6) is pushed forward from the horizontal tube, that is, the construction of the segment-assembled steel pipe (7) as described above, immediately grouting to the surroundings Conduct.

The transport vehicle 5 for carrying out the earth and sand and moving the steel pipe segment 7a in the horizontal pipe construction process of the present embodiment is a movement path 111c, which is provided at the center of each component body housing 111, 121, 131 of the horizontal pipe press-fit device 100. Pass through 121c and 131c.

In this way, the horizontal pipe construction method of the second embodiment according to the present invention, after fixing the movable fixing device 130 to the propulsion steel pipe (6) by pushing the propulsion steel pipe (6), the propulsion formed after the soil discharge In the space within the steel pipe (6) using the intermediate assembly 120 to assemble the segment-assembled steel pipe (7) for construction, and then the propeller 110 and the mobile fixing device 130 of the press-fit device 100 step by step like a slug By repeating the process of press-driving and pushing the propulsion steel pipe 6 while moving forward and constructing the segment-assembled steel pipe 7 using the granulator 120 in the moving position, the reach opening 20 from the work tool 10 is carried out. ) Is a method of assembling and constructing a horizontal pipe, that is, a segment-assembled steel pipe (7), in the ground leading up to

The horizontal pipe construction method is a method in which all the structures are made in the leading propulsion steel pipe, and has an advantage of not being affected by the direction change and the length of the excavation.

Meanwhile, another embodiment of a method for constructing a horizontal pipe for building underground structures underground using the horizontal pipe indentation device of the present invention consisting of a propeller, an assembling machine and a mobile fixing device will be described below.

6 is a working state diagram showing a third embodiment of the horizontal pipe construction method according to the present invention.

Compared to the second embodiment, the present embodiment assembles PC pipes as horizontal pipes by assembling precast concrete segments instead of assembling steel pipe segments to assemble segmented steel pipes as horizontal pipes. Only the rest of the process is the same.

In order to construct the horizontal pipe for the construction of the underground structure, first, as in the second embodiment, the geological survey, the underground obstacle survey, and the preparation for the construction are completed, and then the work tool (advancing base) is placed in the proper position as shown. (10) and the reach opening 20 are provided.

In addition, in the work tool 10, facilities such as a reaction force wall 11 and a propulsion steel pipe control rail 12 are installed at a predetermined position, and then the horizontal pipe indentation device 100 is positioned in the work tool 10. Go to and install it.

Thereafter, after the accurate position measurement, the propulsion steel pipe 6 is mounted on the movable fixture 130 of the horizontal tube press-fit device 100, wherein the movable fixture 130 is fixed inside the propulsion steel pipe 6. To be in a state.

That is, the clamping hydraulic jack 132 in the movable fixture 130 protrudes radially outwardly of the main housing 131 so that the clamping pad 132a attached to the tip of the jack is a propelled steel pipe 6, 2E. 1) by pressing and biting the inner circumferential surface is to completely fix the movable fixing device 130 to the propulsion steel pipe (6).

After setting the horizontal pipe press-fit device 100 and the propulsion steel pipe 6 to the correct position as described above to complete the preparation for the press-fitting and excavation, the hydraulic cylinder 113 of the propeller 110 is operated to move the movable fixture. The propulsion steel pipe 6 is pressed into the ground by allowing the 130 to move forward from the propeller 110.

As such, when the mobile fixing device 130 is pushed by the hydraulic cylinder 113 in the propeller 110, the propulsion steel pipe 6 is pushed forward and pressurized into the ground, and the repulsive force of the repeller 110 is rearward. It is supported by the wall 11 and is endured.

Subsequently, the earth and sand inside the propulsion steel pipe 6 pressurized in the ground is excavated and moved to the work tool 10 using the transport vehicle 5, and then taken out of the gang, and the clamping state of the movable fixture 130 is released. The horizontal pipe indentation device 100 of the present invention is moved forward into the space in the propulsion steel pipe (6).

Next, the PC segments (denoted by reference numeral 8a in FIG. 7) are moved to an assembly machine 120 located in a space in the propulsion steel pipe 6 formed after the earth and sand removal using the transport vehicle 5, and then the assembly machine 120. By assembling the PC segment (8a) in the form of a pipe by using the PC pipe 8 is constructed inside the propulsion steel pipe (6).

7 is a perspective view showing a PC tube assembled in the present invention.

Thereafter, the front side movable fixture 130 of the horizontal pipe press-fit device 100 is fixed to the propulsion steel pipe 6 again (fixed before the piston forward operation of the hydraulic cylinder) and at the same time the rear propeller 110 is constructed. It is fixed to the PC pipe 8, and then the hydraulic cylinder 113 is operated (piston forward operation) to push the movable fixing device 130 from the propeller 110 to press-extrude the propelling steel pipe (6).

Of course, fixing the propeller 110 to the PC pipe (8) by pushing the clamping hydraulic jacks 112, 115 radially outward of the main housing 111, the clamping pads (112a, 115a) attached to the tip of the jack is propelled The propeller 110 is completely fixed to the PC pipe 8 by compressing and biting the inner circumferential surface of the PC pipe 8 (refer to reference numeral 2 in FIGS. 2A to 2C) located inside the steel pipe 6.

As described above, after the propulsion steel pipe 6 is press-fitted in the ground, the excavation of the soil inside the propulsion steel pipe 6 is carried out again to the outside of the mine, and after the clamping state of the propeller 110 and the movable fixture 130 is released, the propeller ( The PC pipe 8 is continuously constructed in the propulsion steel pipe 6 while moving forward 110 and the assembly machine 120.

As described above, after constructing the PC pipe 8 for a predetermined period, the propeller 110 and the movable fixing device 130 are fixed to the PC pipe 8 and the propelling steel pipe 6, respectively, and then the movable fixing device 130 is fixed. Push and push the propelled steel pipe (6), and then carry out the earth and sand again and the construction of the PC pipe (8).

As described above, the propeller 110 and the movable fixture 130 of the press-fit device 100 move forward by stepping like a slug and press-excavate the propelling steel pipe 6 by using the assembly machine 120 in a moving position. The process of constructing (8) is repeated up to the reaching port (20).

Further, in the PC pipe 8 which is exposed after the horizontal propulsion steel pipe 6 is pushed forward from the horizontal pipe, that is, the PC pipe 8, which is constructed as described above, grouting is performed immediately around the pipe.

The transport vehicle 5 for carrying out the soil excavation and the movement of the PC segment 8a in the horizontal pipe construction process of the present embodiment is a movement path 11c provided in the center of each component body housing 111, 121, 131 of the horizontal pipe press-fit device 100. Pass through 121c and 131c.

In this way, the horizontal pipe construction method of the third embodiment according to the present invention, after fixing the movable fixing device 130 to the propulsion steel pipe (6) by pushing the propulsion steel pipe (6), the propulsion formed after the soil discharge In the space within the steel pipe (6) using the intermediate assembly machine 120 to assemble the construction of the PC pipe (8), and then the propeller 110 and the movable fixing device 130 of the press-fit device 100 is moved forward stepwise like a slug While repeating the process of press-driving the propelling steel pipe (6) and the construction of the PC pipe (8) using the assembly machine 120 in the moving position, the ground from the work tool 10 to the reach hole 20 This is a method of assembling and constructing a horizontal tube, that is, a PC tube 8.

This horizontal pipe construction method is a method in which all the structures are made in the leading propulsion steel pipe (8), the material specification is easy, and has excellent advantages in terms of accuracy, quality, and speed.

Next, a method of grouting around the horizontal pipe pre-installed in the horizontal pipe construction method of the present invention will be described.

The purpose of grouting around pre-constructed horizontal pipes (horizontal steel or segment-assembled steel pipes or PC pipes) is to use the horizontal horizontal pipes (horizontal steel or segment-assembled steel pipes or PCs) at the rear when the leading horizontal or propelled steel pipes are press-fitted. The external ground of the pipe) is solidified in a short time to increase the reaction force of the propeller, and also the purpose is to prevent settlement of the ground and to waterproof it.

In addition, by performing the grouting it is possible to bring stability during construction and gulting of the ground by the ground solidification between the horizontal pipe.

That is, by reinforcing the upper and lower strata of the horizontal pipe passing through the soil layer, the weathered rock and the soft rock layer through the injection of grout, which is a ground hardening agent, it is possible to bring about the settlement of the upper strata and the lower crypt region.

And, when the soil state of the area is formed of gravel or soil layer, weathering and soft rock layer, it is possible to completely freeze the disturbed ground and voids when propelling the horizontal pipe, and to obtain waterproof effect when excavating the lower part of the horizontal pipe. .

8 is a working state diagram of the grouting construction in the present invention.

First, a hole of a predetermined size (for example, 50 mm) 9a is drilled into a constructed horizontal tube (horizontal steel tube or segment-assembled steel tube or PC tube, indicated by reference numeral 9 in FIG. 8), and the hole 9a is drilled. Through the outer ground with a hand drill a predetermined diameter (eg 45 ~ 50mm) and the depth is drilled.

Subsequently, the injection sleeve 14 prepared in advance is inserted into the perforation hole 13 of the ground formed as described above.

The injection sleeve 14 drills the injection holes 14a having a small diameter (eg, 5 mm) at predetermined intervals (eg, 0.3 to 0.5 m) in a PVC or steel pipe, and then moves each injection hole 14a to a rubber band 15. ) Wrapped with tape and sealed.

Here, a plurality of injection holes 14a are formed at equal intervals in the circumferential direction at each predetermined interval of the injection sleeve 14, and a rubber band is formed along the outer surface circumference of the injection sleeve 14 at the position where the injection holes 14a are formed. 15 or the tape is wrapped to seal the injection port 14a.

The tape can be used for one-time use, and the rubber band 15 is expanded when the grout agent is injected from the inside of the sleeve 14 through the inlet 14a to the outside to open the inlet 14a, and then after the injection is completed. The bar is closed and closes the inlet (14a) again, there is an advantage that can be reused.

In addition, the bolt 16 is fastened to the inlet of the inlet sleeve 14 on the inner side of the injection sleeve 14 by machining a thread 14b on an inner circumferential surface thereof. 16 is fastened or removed to open or close the inlet of the injection sleeve 14.

Next, after the injection sleeve 14 thus prepared is inserted into the drilling hole 13 of the ground as described above, the filler between the injection sleeve 14 and the outer empty wall is used as a filler of low strength. The suspension mixed with cement and bentonite is filled with natural pressure and hardened.

At this time, the suspension liquid filled in the hole outside the injection sleeve 14 should be adjusted to high fixation strength so that the present injection can be carried out, so that the amount of cement is reduced and the bentonite, which is an expansion agent, must be included in an appropriate amount so as to avoid empty space. .

In this way, inject 1 ~ 6 hours after the filling of the inside of the ball.

This injection is to insert the injection pipe 18 for supplying grouting agent deeply to the end of the injection sleeve 14, the injection pipe 18 at intervals of the injection hole 14a, for example, 0.3 ~ 0.5m from the end Inject step by step while taking out the inside of the horizontal tube (9) (to the left on the drawing).

That is, the grout agent is injected through the discharge hole 18a and the injection hole 14a in a state in which the plurality of discharge holes 18a formed in the injection pipe 18 are positioned at the injection hole 14a of the injection sleeve 14. After injection by the designed injection pressure and injection amount, the injection pipe 18 is pulled out by 0.3 to 0.5m, and then the injection hole 18a and the injection hole 14 of the next position are matched and injected. The injection hole 14a is spaced apart, that is, injection is divided into 0.3 ~ 0.5m.

Here, once the grout agent supplied at a predetermined pressure through the injection pipe 18 is discharged into the injection sleeve 14 through the discharge hole 18a, the rubber band 15 is pushed through the injection hole 14 and injection is performed. At this time, the grout agent is impregnated with the filling material (filler) of the low-strength filler (filler) filled around the injection sleeve 14 by the pressure to improve the ground by infiltrating and filling the surrounding ground instantaneously.

After the grout is injected by the injection pressure and the main pressure amount designed at each position as described above, the injection hole 18a of the injection pipe 18 is moved to the next injection hole 14a position of the injection sleeve 14 for injection. .

In FIG. 8, reference numeral 19 denotes a packer installed between the inner circumference of the injection pipe 18 and the inner circumference of the injection sleeve 14 to serve as a seal, and the discharge hole 18a of the injection pipe 18 is shown. The grout agent discharged through) serves to block the inflow into the horizontal tube (9).

The packer 19 may be installed to be positioned in the direction of the horizontal tube 9 in the discharge hole (18a) when performing only the first grouting, but preferably for the second grouting and further grouting The packer 19 is installed on both sides of the discharge hole 18a to prevent grout from remaining inside the injection sleeve 14 when the injection pipe 18 is completely removed from the injection sleeve 14.

After the first grouting as above, the second and third grouting is carried out in the same way after 6 to 12 hours, depending on the change of ground and air gap.

Then, after all the grouting process is completed and the injection pipe 18 is removed, as shown in FIG. 9, the bolt 16 is fastened to the inlet of the injection sleeve 14 to close the inlet.

This grouting construction is a way to re-inject the grouting agent after only a few bolts 16, if grouting is needed again depending on the soil condition after several years.

On the other hand, Figure 10a to 10c is a construction state showing a number of examples of the grouting construction made according to the construction and arrangement of the horizontal tube in the present invention, it will be described as follows.

As shown in Fig. 10A, when the horizontal pipe (horizontal steel pipe or segment-assembled steel pipe or PC pipe) 9 is constructed in one row (e.g., water / sewer pipe, communication pipe, electric box, etc.), the horizontal pipe ( 9) After inserting the injection sleeve 14 by inserting a hole for drilling radially in the surrounding ground and performing grouting to the surrounding ground through each injection sleeve 14 (independent tube grouting).

Here, the process of injecting the grout agent is as described above.

That is, the grouting construction comprises the steps of: drilling a plurality of holes (9a) in the constructed horizontal pipe (9), and through the holes (9a) through the outer ground with a hand drill; Inserting and installing an injection sleeve (14) having a plurality of injection holes (14a) formed at predetermined intervals in length in each of the perforation holes (13) of the outer ground; Filling the suspension between the injecting sleeve 14 and the outer vacant wall with a natural pressure as a low-intensity filler and then hardening it with natural pressure; Thereafter, a plurality of discharge holes 18a formed in the injection pipes 18 are inserted into the injection pipes 18 supplying the grouting agent to the ends of the injection sleeves 14 and then the injection holes of the injection sleeves 14 ( Injecting a grout agent into the external ground through the discharge hole (18a) and the injection hole (14a) in a state of being positioned at 14a); The grout is made by stepping out the injection pipe 18 stepwise into the horizontal tube 9 at intervals of the injection hole 14a so that the discharge hole 18 is positioned at each injection hole 14a of the injection sleeve 14. Injecting; made.

And, as shown in Figure 10b, when a number of horizontal pipes (horizontal steel pipes or segment-assembled steel pipes or PC pipes) (9) is constructed in a columnar manner and connected to them to use as a structure or a temporary installation (for example, large Tunnels, underground roadways, underground shopping malls, subway tunnels, hollow ball boxes, etc.), horizontally install the injection sleeves 14 by inserting the injection sleeves 14 into the ground around the pipes 9, and then through each injection sleeve 14 The grouting is performed to the surrounding ground, and the injection sleeves 14 are inserted into each other by intersecting the injection sleeves 14 through a hole in the gap between the horizontal pipe 9 and the horizontal pipe 9, respectively. Grouting is carried out to the surrounding ground through which the loosened ground is completely solidified (stacked overlap grouting).

The grouting shown in FIG. 10C is performed in a state where the installation of the horizontal pipe (horizontal steel pipe or segment-assembled steel pipe or PC pipe) 9 is all completed, and the horizontal pipe 9 is constructed in a columnar manner. Another possible method, the grouting method of Figure 10b is a method of injecting inside the horizontal tube (9), but the main heating method is perforated in the space between the horizontal tube (9) and the horizontal tube (9) in the work tool (10) After drilling the ground long in a direction parallel to the horizontal tube (9) by using the equipment, inserting the injection sleeve (14a) into this drilling hole, and then the injection pipe (18) is predetermined in the injection sleeve (14) This is done by dispensing at intervals (strip type outside grouting).

This grouting is performed when the installation of the horizontal pipe (horizontal steel or segment-assembled steel pipe or PC pipe) 9 is all completed, and the injection is made in the work tool 10 rather than inside the horizontal pipe 9. The use of the injection sleeve 9 and the injection pipe 18 is the same as described above, except that the injection sleeve 14 is inserted and installed in parallel with the horizontal tube 9.

That is, the grouting construction, using the drilling equipment in the space between the horizontal pipe (9) and the horizontal pipe (9) completed in the work tool 10 to perforate the outer ground in parallel with the horizontal pipe (9) in a long direction Steps; Inserting and installing an injection sleeve (14) having a plurality of injection holes (14a) formed at predetermined intervals in length in each of the perforation holes of the outer ground; Filling the suspension between the injecting sleeve 14 and the outer vacant wall with a natural pressure as a low-intensity filler and then hardening it with natural pressure; Thereafter, a plurality of discharge holes 18a formed in the injection pipes 18 are inserted into the injection pipes 18 supplying the grouting agent to the ends of the injection sleeves 14 and then the injection holes of the injection sleeves 14 ( Injecting a grout agent into the external ground through the discharge hole (18a) and the injection hole (14a) in a state of being positioned at 14a); The grout agent is stepped out by stepping the injection pipe 18 into the work opening 10 at intervals of the injection opening 14a so that the discharge hole 18a is positioned at each injection opening 14a of the injection sleeve 14. Injecting;

Of course, the injection sleeve 14 forms a plurality of injection holes 14a at equal intervals in each circumferential direction at each injection hole 14a position, but has a rubber band along the circumference of the outer surface of the position where the injection holes 14a are formed. 15) or wrapped with tape.

In addition, at the inlet of the work tool 10 of the injection sleeve 14, the threaded portion 14b is processed on the inner circumferential surface so that the bolt 16 can be fastened, and the bolt 16 is fastened or removed to the injection. It is possible to open or close the inlet of the sleeve 14.

In addition, on the outer circumference of the injection pipe 18 is provided between the inner circumference of the injection sleeve 14 and the packer 19 to serve as a sealed role, the packer 19 to the injection pipe 18 In the discharge hole 18a, one is installed in the direction toward the work tool 10, or both are installed around the discharge hole 18a.

The grouting of FIGS. 10A and 10B is carried out during the installation of the horizontal pipe 9, but the grouting of FIG. 10C is performed after the installation of the horizontal pipe 9 is completed. It has a relatively quick advantage.

In this way, the horizontal pipe construction method of the present invention consists of a process of installing a horizontal tube using a horizontal tube press-fit device consisting of a propeller, an assembling machine and a movable fastener, and then grouting construction around the horizontal tube. Faster and safer construction is possible when the apparatus and method of the present invention are applied to the field.

As described above, according to the horizontal pipe indentation apparatus for constructing the underground structure according to the present invention and the horizontal pipe construction method using the same, the following advantages over the conventional steel pipe indentation method.

1) Since the press-fitting device moves in the direction of drilling in the horizontal direction and press-fits, it can press-fit with strong pressure and can be designed in various ways according to soil quality, materials and site conditions.

2) Since the press-fitting device moves inwardly and press-fits in the horizontal pipe, it is possible to work even if the work tool used as a conventional propulsion base is narrow, and the conventional steel pipe press- ing method requires a very large reaction wall but the initial steel pipe is applied when the present invention is applied. Since the reaction wall is used only during the indentation, it can be constructed as a relatively small reaction wall, and it is not necessary to improve the ground and reinforce the support pile at the rear of the reaction wall.

3) Since there is little excavation amount, there is almost no settlement of surrounding ground during excavation and after excavation, so construction safety is excellent and there is no noise and vibration.

4) Since the propulsion hydraulic system is not installed in the work area, the work is easy and the diversion direction is easy.

5) Conventionally, grouting was not possible during steel pipe indentation, but in the case of applying the present invention, the surrounding grouting can be perfectly performed during propulsion, and the drilling speed is very fast because the steel pipe is indented with relatively small force, and the length of the drilling can be increased. It is not affected.

6) It is safe because excavation work is done in steel pipe, and the air is relatively short.

Claims (32)

A plurality of clamping hydraulic jacks protruding outward from the housing and a plurality of hydraulic cylinders connected to the main housing of the following movable fixture by pistons for forward / backward operation are mounted inside the main body housing. A thruster configured to be integrally fixed to the horizontal tube by simultaneously pressing the inner circumferential surface of the horizontal tube outside the main body housing; An assembly unit in which a main body housing is integrally integrated with the propeller main housing and equipped with a plurality of assembling jacks for assembling a steel pipe segment or a PC segment into a horizontal tube outside the housing inside the main body housing; A plurality of clamping hydraulic jacks protruding out of the housing are mounted inside the main body housing so that the clamping pads of the respective clamping hydraulic jacks can be integrally fixed to the horizontal pipe or the propulsion steel pipe by simultaneously pressing the inner circumferential surface of the outside of the main housing. A movable fixture which is configured to be separated in the front to propel forward by the actuation of a piston of the hydraulic cylinder connected from the propeller for the press-in excavation of the horizontal or propulsion steel pipe; Horizontal pipe indentation device for building underground structures comprising a. The method according to claim 1, Each main body housing of the propeller, the assembling machine and the movable fixture, It has a cylindrical structure as a whole, and a doorway for the housing outer operation of each of the clamping hydraulic jacks and the assembly jacks is formed at each corresponding position, and in the center, a constant space-type movement is communicated between the main body housings in a lower open state as a front and rear connecting passage. The horizontal pipe indentation device for the construction of underground structures, characterized in that the passage is formed so that the transport vehicle and the workforce can pass back and forth through this. The method according to claim 1, And a plurality of clamping hydraulic jacks, each of which is separately mounted on all of the main body housings and the rear of the propeller, respectively. The method according to any one of claims 1 to 3, Underground structure construction, characterized in that the three clamping hydraulic jacks that are radially protruding operation is mounted to the rear of the main body housing of the propeller, and the four clamping hydraulic jacks that are radially protruding operation is mounted on all of the body housing of the propeller. Horizontal pipe indenter. The method according to claim 1 or 2, Horizontal clamping device for building underground structure, characterized in that the four clamping hydraulic jacks that are radially protruding operation is mounted on the main housing of the movable fixture. The method according to claim 1, Horizontal pipe indentation device for building underground structure, characterized in that the wheel for movement in the horizontal pipe is mounted to the lower end of the main housing of the propeller. In the construction method of the horizontal pipe for the construction of underground structures, (a) moving and installing a horizontal pipe indentation device including a propeller, an assembling machine, and a movable fastener in a work tool; (b) then mounting the first horizontally pressurized horizontal steel pipe to the movable holder, wherein the clamping hydraulic jacks of the movable fixture simultaneously press the inner circumferential surface of the horizontal steel pipe, thereby fixing the movable fixture to the inside of the horizontal steel pipe; (c) then pressurizing the horizontal steel pipe by actuating the hydraulic cylinder of the propeller forward with the propeller supported by the reaction wall in the working tool to propel the movable fixture and the horizontal steel pipe forward; (d) thereafter pitting the inside of the horizontal steel pipe and inserting a new horizontal steel pipe of smaller diameter into the horizontally pressurized horizontal steel pipe, and then using a clamping hydraulic jack of the propeller, the propeller is integrated into the horizontally pressurized horizontal steel pipe. Simultaneously fixing the movable fixture to the inside of the small diameter horizontal steel pipe using the clamping hydraulic jacks of the movable fixture; (e) then actuating the hydraulic cylinder of the propeller to propel the mobile fixture and the horizontal steel pipe of small diameter forward to press-fit the horizontal steel pipe of the small diameter underground; (f) the step of completing the advance and excavation and construction of the small diameter horizontal steel pipe step by repeating the propulsion of the propeller and the propulsion of the movable fixture, the excavation in the horizontal steel pipe; (g) then inserting a new horizontal steel pipe of smaller diameter and completing the construction by the method of steps (d) to (f); (h) repeating step (g) to the arrival port; Horizontal pipe construction method for building underground structures comprising a. The method according to claim 7, The grouting construction is performed around the horizontal steel pipe where the construction is completed, and the grouting construction is carried out on the horizontal steel pipe which has completed the construction at the same time as the press-in excavation of the new horizontal steel pipe at the front and the completion of the horizontal construction. Construction method. The method according to claim 8, The grouting construction, (i) drilling a plurality of holes in the constructed horizontal steel pipe, and drilling an external ground by hand drill through each hole; (j) inserting and installing an injection sleeve in which a plurality of injection holes are formed at predetermined intervals in length in each of the perforation holes of the external ground formed in the step (i); (k) filling the suspension between the injecting sleeve and the outer cavity wall with natural pressure and suspending the suspension mixed with cement and bentonite as a low strength filler; (l) thereafter inserting an injection pipe for supplying grouting agent to the end of each injection sleeve, and then, through the discharge hole and the injection hole, a plurality of discharge holes formed in the injection pipe are positioned at the injection hole of the injection sleeve. Injecting a grout agent into the ground; (m) injecting a grout agent by drawing out the injection pipe stepwise into the horizontal steel pipe at intervals of injection holes so that the discharge hole is located at each injection hole position of the injection sleeve; Horizontal pipe construction method for constructing underground structures, characterized in that the made. The method according to claim 9, The injection sleeve is formed at equal intervals in the circumferential direction of the plurality of injection holes at each injection hole position, the base structure for the construction of the underground structure, characterized in that the sealing wrap around the rubber band or tape along the circumference on the outer surface of the position formed Horizontal pipe construction method. The method according to claim 9, Underground structure, characterized in that the horizontal steel pipe side inlet of the injection sleeve can be bolted by processing the thread on the inner circumferential surface, and by fastening or removing the bolt to open or close the inlet of the injection sleeve. Horizontal pipe construction method for construction. The method according to claim 9, On the outer circumference of the injection pipe is installed between the inner circumference of the injection sleeve and a packer to act as a sealing, the packer is installed one in the direction of the horizontal steel pipe from the discharge hole of the injection pipe or the center of the discharge hole Horizontal pipe construction method for building underground structures, characterized in that installed on both sides. The method according to claim 9, In a state in which one horizontal steel pipe is constructed in an independent form, a radial hole is drilled in the ground around the horizontal steel pipe to insert the injection sleeve, and then grout to the surrounding ground through each injection sleeve. Horizontal pipe construction method for construction of underground structure. The method according to claim 9, In the state of constructing several horizontal steel pipes in a columnar manner, drill a radial hole in the ground around the horizontal steel pipe and install the injection sleeve, and grout to the surrounding ground through each injection sleeve. In the air gap between the horizontal steel pipes and the installation of the injection sleeves in the two horizontal steel pipes cross each other after the horizontal pipe construction method for the construction of the underground structure, characterized in that the grouting to the surrounding ground through each injection sleeve. The method according to claim 7, After step (h), the grouting construction is performed in the state where the installation of the horizontal steel pipes is completed, and the grouting construction is performed in the space between the horizontal steel pipes and the horizontal steel pipes in a state in which several horizontal steel pipe rows are completed by the main heating method. Horizontal pipe construction method for building underground structures characterized by. The method according to claim 15, The grouting construction, (n) perforating the outer ground in a direction parallel to the horizontal steel pipe using the drilling equipment in the space between the horizontal steel pipe and the horizontal steel pipe constructed in the work tool; (o) inserting and installing an injection sleeve in which a plurality of injection holes are formed at predetermined intervals in length in each of the perforation holes of the external ground formed in the step (i); (p) filling the suspension between the injecting sleeve and the outer circumferential wall with a natural pressure and suspending the suspension mixed with cement and bentonite as a low intensity filler; (q) after the injection pipe for supplying the grouting agent is inserted to the end of each injection sleeve and the plurality of discharge holes formed in the injection pipe to be located in the injection hole of the injection sleeve to the outside through the discharge hole and the injection hole Injecting a grout agent into the ground; (r) injecting a grout agent by drawing out the injection pipe stepwise into the working hole at intervals of the injection hole so that the discharge hole is located at each injection hole position of the injection sleeve; Horizontal pipe construction method for constructing underground structures, characterized in that the made. The method according to claim 16, The injection sleeve is formed at equal intervals in the circumferential direction of the plurality of injection holes at each injection hole position, the base structure for the construction of the underground structure, characterized in that the sealing wrap around the rubber band or tape along the circumference on the outer surface of the position formed Horizontal pipe construction method. The method according to claim 16, Underground structure construction, characterized in that the inlet of the working sleeve of the injection sleeve can be bolted by processing a thread on the inner peripheral surface, and by fastening or removing the bolt to open or close the inlet of the injection sleeve. Horizontal pipe construction method. The method according to claim 16, On the outer circumference of the injection pipe is provided between the inner circumference of the injection sleeve and a packer to act as a sealing, and install one packer in the direction of the working tool from the discharge hole of the injection pipe or around the discharge hole Horizontal pipe construction method for building underground structures, characterized in that installed on both sides. In the construction method of the horizontal pipe for the construction of underground structures, (a ') moving and installing a horizontal pipe indentation device including a propeller, an assembling machine, and a movable fastener in the working tool; (b ') mounting the propulsion steel pipe to the mobile fixing device, wherein each clamping hydraulic jack of the mobile fixing device simultaneously compresses the inner circumferential surface of the propelling steel pipe to fix the mobile fixing device to the inside of the propelling steel pipe; (c ') after the propeller is supported by the reaction wall in the working tool to operate the hydraulic cylinder of the propeller to push forward the propulsion steel pipe by underground propulsion of the movable fixture and the propulsion steel pipe; (d ') assembling the steel pipe segment or the PC segment into a horizontal pipe by using an assembling machine in the space inside the propulsion steel pipe formed after the pitted by moving the horizontal pipe indentation apparatus after the inside of the propulsion steel pipe; (e ') integrally fixing the propeller to the inside of the assembled horizontal pipe by using the clamping hydraulic jacks of the propeller, and simultaneously fixing the movable fixture to the inside of the propulsion steel pipe by using the clamping hydraulic jacks of the movable holder; (f ') then actuating the hydraulic cylinder of the propeller to push forward the propulsion steel pipe by pushing forward the movable fixture and the propulsion steel pipe; (g ') then repeating steps (d') to (f ') to the arrival port; Horizontal pipe construction method for building underground structures comprising a. The method of claim 20, The grouting construction should be performed around the horizontal pipe where the construction is completed, and the grouting construction will be carried out on the horizontal pipe with the back construction completed at the same time as the push-in excavation of the propulsion steel pipe in front of the horizontal pipe construction method. . The method according to claim 21, The grouting construction, (h ') drilling a plurality of holes in the constructed horizontal pipe, and drilling the external ground with a hand drill through each hole; (i ') inserting and installing an injection sleeve in which a plurality of injection holes are formed at predetermined intervals in length in each of the perforation holes of the external ground formed in the step (h'); (j ') filling a suspension of natural cement and bentonite as a low-strength filler in the space between the inlet sleeve and the outer vacant wall at a natural pressure and then solidifying; (k ') after inserting the injection pipe for supplying the grouting agent to the end of each injection sleeve and the plurality of discharge holes formed in the injection pipe is positioned in the injection hole of the injection sleeve through the discharge hole and the injection hole Injecting grout into the outer ground; (l ') injecting a grout agent by drawing out the injection pipe stepwise into the horizontal pipe at intervals of injection holes so that the discharge hole is located at each injection hole position of the injection sleeve; Horizontal pipe construction method for constructing underground structures, characterized in that the made. The method according to claim 22, The injection sleeve is formed at equal intervals in the circumferential direction of the plurality of injection holes at each injection hole position, the base structure for the construction of the underground structure, characterized in that the sealing wrap around the rubber band or tape along the circumference on the outer surface of the position formed Horizontal pipe construction method. The method according to claim 22, The horizontal tube side inlet of the injection sleeve to process the thread on the inner circumferential surface so that the bolt can be fastened, by fastening or removing the bolt to build an underground structure, characterized in that to open or close the inlet of the injection sleeve Horizontal pipe construction method. The method according to claim 22, On the outer circumference of the injection pipe is installed between the inner circumference of the injection sleeve and a packer to act as a sealing, and install one packer in the direction of the horizontal tube from the discharge hole of the injection pipe or around the discharge hole Horizontal pipe construction method for building underground structures, characterized in that installed on both sides. The method according to claim 22, In a state in which one horizontal pipe row is constructed in an independent form, a radial hole is drilled in the ground around the horizontal pipe to insert the injection sleeve, and then grout to the surrounding ground through each injection sleeve. Horizontal pipe construction method for construction of underground structure. The method according to claim 22, In the state of constructing several horizontal pipe rows in a columnar manner, drill a radial hole in the ground around the horizontal pipe to insert the injection sleeve, and grout to the surrounding ground through each injection sleeve. In the gap between the horizontal pipes horizontal pipe construction method for the construction of underground structures, characterized in that the injection sleeves in the two horizontal pipes are installed to cross each other and then grouting to the surrounding ground through each injection sleeve. The method of claim 20, After step (g '), the installation of grouting is performed in a state where the installation of the horizontal pipes is completed, but the grouting is performed in the space between the horizontal pipes and the horizontal pipes in the state of completing the construction of several horizontal pipe rows in a columnar manner. Horizontal pipe construction method for building underground structures, characterized in that. The method according to claim 28, The grouting construction, (m ') perforating the external ground in a direction parallel to the horizontal pipe using a drilling equipment in the space between the horizontal pipe and the horizontal pipe completed in the working tool; (n ') inserting and installing an injection sleeve in which a plurality of injection holes are formed at predetermined intervals in length in each of the perforation holes of the external ground formed in the step (m'); (o ') filling the suspension between the cement sleeve and the bentonite as a low-strength filler in the space between the injection sleeve and the outer vacant wall at a natural pressure and then hardening; (p ') after the injection pipe for supplying the grouting agent is inserted to the end of each injection sleeve and the plurality of discharge holes formed in the injection pipe is positioned in the injection hole of the injection sleeve through the discharge hole and the injection hole Injecting grout into the outer ground; (q ') injecting a grout agent by drawing out the injection pipe stepwise into the working hole at intervals of the injection hole so that the discharge hole is located at each injection hole position of the injection sleeve; Horizontal pipe construction method for constructing underground structures, characterized in that the made. The method of claim 29, The injection sleeve is formed at equal intervals in the circumferential direction of the plurality of injection holes at each injection hole position, the base structure for the construction of the underground structure, characterized in that the sealing wrap around the rubber band or tape along the circumference on the outer surface of the position formed Horizontal pipe construction method. The method of claim 29, Underground structure construction, characterized in that the inlet of the working sleeve of the injection sleeve can be bolted by processing a thread on the inner peripheral surface, and by fastening or removing the bolt to open or close the inlet of the injection sleeve. Horizontal pipe construction method. The method of claim 29, On the outer circumference of the injection pipe is provided between the inner circumference of the injection sleeve and a packer to act as a sealing, and install one packer in the direction of the working tool from the discharge hole of the injection pipe or around the discharge hole Horizontal pipe construction method for building underground structures, characterized in that installed on both sides.

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