KR102072632B1 - System for constructing underground conduit and shield method for two-span underground conduit using this - Google Patents

Abstract

The present invention relates to an underground pipeline construction system and a heterogeneous shield method using the same, which can stably reduce or increase a predetermined diameter of an underground pipeline without replacing a construction system when the underground pipeline is constructed from a start side to an arrival side. To this end, the underground pipeline construction system of the present invention comprises: a drilling unit which drills a natural ground on the front by rotation; a shield container unit which is detachably coupled to the drilling unit; at least two propelling jack units which are arranged to be spaced apart on an inner circumferential surface of the shield container unit, and provide propulsion to the driving unit and the shield container unit; and a connecting jack unit which connects the driving unit to the shield container unit in a mutually detachable manner. Moreover, a side surface bit of the driving unit and an expansion shield cover of the shield container unit can make a reciprocating movement corresponding to a predetermined diameter of a drilled hole which is changed.

Description

SYSTEM FOR CONSTRUCTING UNDERGROUND CONDUIT AND SHIELD METHOD FOR TWO-SPAN UNDERGROUND CONDUIT USING THIS}

The present invention relates to an underground pipeline construction system and a heterogeneous shielding method using the same. More specifically, in constructing an underground pipeline from the oscillation side to the arrival side, the setting diameter of the underground pipeline can be stably reduced or expanded without replacing the construction system. It is about underground pipe construction system and hetero shield method using this.

In general, the construction methods for constructing pipelines in the ground without excavating the ground are largely divided into the propulsion method and the shield method, and are used according to the pipe diameter and the soil of the pipeline to be constructed. The assembly of the segment at the rear side is performed in parallel.

In the propulsion method, in order to achieve a long distance, the medium pressure method was previously used, and recently, the excavation diameter by the excavator is set to be larger than the external diameter of the propulsion pipe, so that between the propulsion pipe and the inner wall of the drilling hole Thrust reduction methods to secure tail voids are becoming mainstream.

In the medium pressure method in the propulsion method, the propulsion jack 4 is inserted in the middle of the propulsion pipe 3 at a point about 50 m behind the excavator 1, and the propulsion jack 4 is extended during the propulsion process. It is intended to reduce the thrust of the propulsion jack 4 by moving about 50m forward. In addition, the method of reducing the thrust by the tail void reduces the occurrence of friction between the propulsion pipe 3 and the inner wall of the excavating hole by the sliding of the tail void, and reduces the thrust required for the extension of the propulsion jack 4, thereby increasing the long distance It is intended to promote.

In the shielding method, the excavation by the excavator 1 and the assembly of the segment 8 at the rear thereof are carried out. The filler is injected between the outer circumference of the assembled pipe and the inner wall of the drilling hole, and the excavator 1 The space generated in the outer diameter of the excavation hole and the pipe by the landfill is filled with the filler.

However, in order to adjust the diameter of the underground pipe in the conventional propulsion method or the shield method, the excavator (1) and the shield cylinder unit (2) had to be replaced.

In addition, according to the conventional method, the diameter of the underground pipe can be formed larger than the set diameter, and the diameter of the underground pipe can be adjusted by adjusting the outer diameter of the shield pipe by the segment to the set diameter or by adjusting the diameter smaller than the set diameter. In the section where the outer diameter of the shield pipe is controlled to be smaller than the set diameter, the consumption of the fillers filled between the inner wall and the segment of the excavation hole increases, increasing the cost of the construction of the underground pipe and increasing the time for hardening of the fillers. Had to spend.

Republic of Korea Patent Publication No. 10-2014-0109006 (Invention: Open Shield Method, 2014. 09. 16. published)

An object of the present invention is to solve the conventional problems, in the construction of the underground pipeline from the oscillation side to the arrival side, the construction of the underground pipeline to stably reduce or expand the set diameter of the underground pipeline without replacing the construction system To provide a system and a hetero shield method using the same.

According to a preferred embodiment for achieving the above object of the present invention, the underground pipeline construction system according to the present invention includes an excavation unit for excavating Jisan in front of the rotation; A shield cylinder unit detachably coupled to the excavation unit; A propulsion jack unit having two or more spaced apart from the inner circumferential surface of the shield cylinder unit and providing a driving force to the excavation unit and the shield cylinder unit; And a connection jack unit for detachably connecting the excavation unit and the shield cylinder unit to each other.

Here, the excavation unit, the head body detachably coupled to the shield cylinder unit via the connection jack unit; An excavation head rotatably coupled to the head body for excavation of the jisan, and having at least side bits of a side bit disposed on a circumferential surface and a front bit disposed on a front surface thereof; A head driving part which rotates the drilling head with respect to the head body; And a side bit reciprocating portion for reciprocating the side bit such that the side bit can protrude from the excavation head.

Here, the shield cylinder unit, the unit shield cylinder is detachably coupled to the head body via the connection jack unit; An expansion shield cover separated from each other by at least two and provided on an outer circumferential surface of the unit shield container; And an expansion shield driver for reciprocating the expansion shield cover so that the expansion shield cover can protrude from the unit shield container.

Here, the shield cylinder unit, the first cylinder unit is detachably coupled to the head body via the connection jack unit; And a second cylinder unit detachably coupled to the first cylinder unit via the connection jack unit.

Here, the shield cylinder unit, the shield shield cover for closing the exposed space generated between the expansion shield cover adjacent to each other as the expansion shield cover protrudes; And a cover coupling part configured to fix the shield shield cover to the expansion shield cover.

Here, the ground reinforcing drilling unit for injecting the ground reinforcing liquid in front of the drilling unit; A ground collapse preventing unit that is coupled to the reciprocating movement of the excavation unit and protrudes forward of the excavation unit; An earth and sand transport unit provided in at least one of the excavation unit and the shield cylinder unit to discharge the earth and sand introduced into the excavation unit to the oscillation side; A segment assembleable from the shield barrel unit to form an underground pipeline; A propulsion pipe supplied to the shield cylinder unit to form an underground pipe passage; An integrated control unit controlling the operation of the excavation unit, the propulsion jack unit, and the connection jack unit; And a hydraulic unit providing hydraulic pressure to the excavation unit, the propulsion jack unit, and the connection jack unit. At least any one of the more.

Here, the ground reinforcing drilling unit, the drilling rod to form the injection path of the ground reinforcing liquid; A rod rotating driver for rotating the perforated rod; A reciprocating rod driver for reciprocating the perforated rod; And a reinforcing liquid pumping unit supplying the ground reinforcing liquid to the punching rod.

Here, the reciprocating rod driving unit includes any one of the propulsion jack unit.

Here, the ground collapse preventing unit, the shielding plate coupled to the excavation unit to be movable slide; And a prevention driving part coupled to the excavation unit so as to protrude forward of the excavation unit to slide the obstruction plate part.

The heterogeneous shielding method according to the present invention forms an excavation hole by advancing the excavation unit according to the expansion and contraction of the propulsion jack unit by using the underground pipeline construction system according to the present invention, and installing a segment in the excavation hole to provide a shield pipe. The method of shielding the underground pipeline to form the underground pipeline formed, and when the underground pipeline construction system reaches a position to change the set diameter of the underground pipeline between the oscillation side and the arrival side, the side bit corresponding to the set diameter that is changed By operating the reciprocating unit to reciprocate the side bit from the excavation head, and then extend the propulsion jack unit while the excavation unit is in operation to extend the shield cylinder unit and the excavation unit by the length of the shield pipe of the segment. Advance and change the set diameter so that the expansion shield cover is supported on the inner wall of the changed drilling hole. And by operating the extension shield driving unit provided in the shield tube unit from whole, thereby the shield unit reciprocates the extension shield cover.

Here, the segment is formed by a plurality of cylindrical shield tubes, formed by a combination of a steel frame and a ceramic layer provided inside the steel frame, wherein the ceramic layer is located on the inner surface side of the ceramic layer. An injection hole of a filler material, a discharge hole of a filler material positioned on the outer surface side of the ceramic layer, and a passage connecting the injection hole and the discharge hole are provided. The injection hole is equipped with a check valve, and the discharge hole is an outer surface of the ceramic layer. It is provided at a plurality of points on the side, the passage is provided to connect the injection port and the plurality of discharge ports.

Here, the pipe changing side is formed at a position where the set diameter of the underground pipe is changed between the oscillating side and the reaching side.

According to the underground pipeline construction system according to the present invention and the hetero shield method using the same, in constructing the underground pipeline from the oscillation side to the arrival side, the diameter of the underground pipeline can be stably reduced or expanded without replacing the construction system.

In addition, the present invention in forming the underground pipeline, it is possible to stably adjust the diameter of the underground pipeline while minimizing the space between the inner wall and the segment of the excavation hole.

In addition, the present invention can stably expand or reduce the diameter of the excavation hole for forming the underground pipeline in accordance with the reciprocating operation of the side bit.

In addition, the present invention can suppress or prevent the flow of the side bit in the drilling head when the drilling head is rotated in Jisan, it is possible to stably maintain the diameter of the drilling hole according to the drilling.

In addition, the present invention, as the diameter of the shield cylinder unit is reduced or expanded in response to the diameter reduction or expansion of the drilling hole through the excavation head, the shield cylinder unit in the excavation hole can stably generate a reaction force according to the frictional resistance with Jisan When the drilling head is rotated, the shield cylinder unit is stably supported by the acid.

In addition, the present invention can stably close the opening portion according to the expansion of the shield cylinder unit, it is possible to prevent the residue falling from the acid flows between the unit shield cylinder and the expansion shield cover.

In addition, the present invention can stably adjust the drilling depth of the drilling unit through the propulsion jack unit.

In addition, the present invention facilitates the attachment and detachment of the excavating unit and the shield cylinder unit through the connecting jack unit and the detachment between the first cylinder unit and the second cylinder unit, the replacement of the second cylinder unit in accordance with the expansion or reduction of the shield cylinder unit. You can do it conveniently.

In addition, the present invention because the ground reinforcing drilling unit is operated in conjunction with the propulsion jack unit, it is possible to reduce the number of parts in the shield cylinder unit, to ensure the internal space of the shield cylinder unit can facilitate the movement of the operator. .

In addition, the present invention when working in front of the excavation unit through the ground collapse prevention unit, it is possible to stably protect the worker in accordance with the collapse of the ground.

In addition, the present invention is the head drive unit, side bit reciprocating section, expansion shield driving unit, propulsion jack unit, connection jack unit, ground reinforcement drilling unit, ground collapse that is hydraulically applied to the underground pipeline construction system through one hydraulic unit and integrated control unit The prevention unit and the earth and sand conveying unit can be integrated and controlled.

1 is a longitudinal sectional view showing a general propulsion method (a) and a shield method (b).
2 is a view schematically showing an underground pipeline construction system according to an embodiment of the present invention.
Figure 3 is a view showing the side bit reciprocating portion mounted to the excavation head of the closing method of the front closed in the underground pipeline construction system according to an embodiment of the present invention.
Figure 4 is a view showing the side bit reciprocating portion mounted to the open head of the excavation type of the open front in the underground pipeline construction system according to an embodiment of the present invention.
5 is a longitudinal cross-sectional view showing a coupling state (a) of the shield cylinder unit and the diameter expansion state (b) of the shield cylinder unit in the underground pipeline construction system according to an embodiment of the present invention.
6 is a longitudinal cross-sectional view showing a state in which the shield shield cover is coupled in the expanded state of the shield cylinder unit in the underground pipeline construction system according to an embodiment of the present invention.
7 is a view showing an arrangement state of the ground reinforcing drilling unit in the underground pipeline construction system according to an embodiment of the present invention.
8 is an exploded cross-sectional view (a) and a combined cross-sectional view (b) showing a coupling state of the propulsion jack unit in the shield barrel unit in the underground pipeline construction system according to an embodiment of the present invention.
9 is a view showing a combined state (a) and the operating state (b) of the ground collapse prevention unit in the underground pipeline construction system according to an embodiment of the present invention.
10 is a view showing a state in which the underground pipeline is formed by the underground pipeline construction system according to an embodiment of the present invention.
11 is a partial cutaway front view showing a state in which a tube is formed of a segment according to an embodiment of the present disclosure.
12 is a perspective view showing a segment according to an embodiment of the present invention.
13 is a front view as seen from the inner diameter side of the segment according to an embodiment of the present invention.
14 is a longitudinal cross-sectional view cut along the width direction of a segment according to an embodiment of the present invention.
15 is a longitudinal cross-sectional view cut along the circumferential direction of a segment according to an embodiment of the present invention.
16 is a side view showing a connection state of a shield pipe using a segment according to an embodiment of the present invention.
17 is a longitudinal sectional view of a shield tube assembled using a segment according to an embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the underground pipeline construction system and a hetero shield method using the same according to the present invention. At this time, the present invention is not limited or limited by the embodiment. In addition, in describing the present invention, a detailed description of known functions or configurations may be omitted to clarify the gist of the present invention.

Referring to FIG. 1, in the general propulsion method, a propulsion pipe 3 connected to a rear end of a shield cylinder 2 is disposed on a rear side of an excavator 1 using a tail void thrust reduction method. It is supposed to enter the ground by the propulsion method.

The propulsion pipe 3 is RC, a dark tile pipe, a copper pipe, or the like, and as is well known, it is injected into the ground as a propulsion input jack installed on the oscillation side while being sequentially connected to the rear end side.

The shield cylinder 2 has a structure in which a plurality of propulsion jacks 4 are provided inside the skin cylinder suitable for the outer diameter of the propulsion tube 3, and the inner diameter of the shield cylinder 2 has a propulsion tube ( The collar segment 5 which is substantially the same as 3) and whose outer diameter is smaller than the propulsion tube 3 is stored in a preassembled state, and is connected to the tip of the propulsion tube 3, An index chamber 7 for indexing is formed in the fitting portion of the collar segment 5 and the propulsion tube 3.

The collar segment 5 has an integral structure of a two-diameter collar 6 fitted and attached to the tip of the propulsion tube 3 and an attachment segment 5a in which the inner diameter is combined with the inner diameter of the propulsion tube 3. have.

The method of connecting the collar segment 5 to the uppermost end of the propulsion tube 3 may be performed by fitting the radial diameter collar 6 to the distal end of the propulsion tube 3 at the distal end of the propulsion tube 3. The segment 5a is accommodated in the shield cylinder 2 of the excavator 1, and the shield pipe is connected to the attaching segment 5a.

By the use of the segment 5 for collars, it is possible to constantly switch from the propulsion method to the shield method, to improve the efficiency, and to leak the connection part between the propulsion pipe 3 and the shield pipe. It is possible to prevent the occurrence of gaps in the extraction and the inner diameter, and to improve the flexibility, there is an advantage of constructing an underground pipeline resistant to earthquakes.

2 to 10, the underground pipeline construction system according to an embodiment of the present invention, the excavation unit 100 and the excavation unit 100 for excavating the Jisan in front of the rotation, the shield is detachably coupled to the excavation unit 100 Cylinder unit 200, and two or more spaced apart on the inner circumferential surface of the shield cylinder unit 200 and the propulsion jack unit 300 to provide a driving force to the excavation unit 100 and the shield cylinder unit 200, and the excavation unit ( 100 and a connecting jack unit 400 for detachably connecting the shield cylinder unit 200 with each other.

Excavation unit 100 is a head body 110 that is detachably coupled to the shield cylinder unit 200 via the connecting jack unit 400, and rotatably coupled to the head body 110 for excavation of Jisan circumference Excavation head 120 and at least one side bit 123 of the side bit 123 and the front side bit 124 disposed on the front surface, the excavation head 120 based on the head body 110 The head drive unit 130 for rotating the side bit 123 may include a side bit reciprocating unit 140 for reciprocating the side bit 123 so as to protrude from the excavation head 120.

The excavating head 120 may be divided into a closing method in which the front is closed and an open method in which the front is open.

In the case of the closing method, the excavating head 120 is spaced apart from the ring-shaped head ring part 121 with the front part opened, the closing guide 122 closing the front part of the head ring part 121, and the closing guide 122. A plurality of front side bits 124 and a plurality of side bits 123 spaced apart from the circumferential surface of the head ring 121 may be included.

In the case of the open method, the drilling head 120 has a ring shape in which the front part is opened, and the head ring part 121 having a ring shape in which the front part is opened and a plurality of side bits spaced apart from the circumferential surface of the head ring part 121 ( 123). In this case, a plurality of front bits 124 may be spaced apart from the front portion of the drilling head 120 along the edge of the drilling head 120.

The bit reciprocating hole 1211 may be formed in the circumferential surface of the excavation head 120 to correspond to the installation position of the side bit 123 to reciprocate the side bit 123.

As shown in FIG. 3, the side bit reciprocating part 140 corresponds to the closing bracket 122 and the guide bracket 142 formed at the edge of the bit reciprocating hole 1211. It is coupled to include a reciprocating drive unit 144 for reciprocating the side bit 123, the side bit 123 is slide-movable to the bit reciprocating hole 1211 and the guide bracket 142 in a detachable state It may further include a bit coupling member 143 to be coupled. Then, since the reciprocating drive unit 144 slides the bit coupling member 143, the side bit 123 can protrude from the drilling head 120.

As shown in FIG. 4, the side bit reciprocating part 140 corresponds to the guide bracket 142 and the guide bracket 142 formed at the edge of the bit reciprocating hole 1211. The fixed bracket 141 is coupled to, and includes a reciprocating drive unit 144 coupled to the fixed bracket 141 to reciprocate the side bit 123, the bit reciprocating in the state that the side bit 123 is detachably coupled It may further include a bit coupling member 143 that is slidably coupled to the hole 1211 and the guide bracket 142. Then, since the reciprocating drive unit 144 slides the bit coupling member 143, the side bit 123 can protrude from the drilling head 120.

The reciprocating drive unit 144 may include a reciprocating cylinder (1441) in which the hydraulic pressure is generated, and a reciprocating piston (1442) reciprocating in the reciprocating cylinder (1441) by the hydraulic pressure. Then, the reciprocating cylinder (1441) is to be fixed to the closing guide 122 or the fixing bracket 141, the reciprocating piston (1442) bit in accordance with the operation of the reciprocating cylinder (1441) in the state that the side bit (123) is coupled The slide can be moved in the reciprocating hole 1211 and the guide bracket 142.

In addition, when the bit coupling member 143 is further included in the side bit reciprocating portion 140, the reciprocating cylinder 1442 is fixed to the closing guide 122 or the fixing bracket 141, and the reciprocating piston 1442 is It is to be fixed to the bit coupling member (143).

The shield cylinder unit 200 is separated from each other by two or more unit shield cylinder 201 is detachably coupled to the head body 110 via the connection jack unit 400 as shown in Figure 5 to 7 Expansion shield cover part 202 provided on the outer circumferential surface of the unit shield cylinder 201, and the expansion shield driver for reciprocating the expansion shield cover 202 so that the expansion shield cover 202 can protrude from the unit shield cylinder 201 ( 203).

Two or more unit shield cylinders 201 may be disposed to be spaced apart from each other in a length direction of the extension shield cover 202. The unit shield cylinder 201 may have a cylindrical shape corresponding to the longitudinal direction of the expansion shield cover 202.

In the shield cylinder unit 200, the expansion interlocking hole 2011 may be formed in the circumferential surface of the unit shield cylinder 201 to reciprocate the expansion shield cover 202. The expansion interlocking hole 2011 may be formed through the circumferential surface of the unit shield cylinder 201 corresponding to the center of the expansion shield cover 202.

The expansion shield cover 202 may be separated into two or more along the longitudinal direction and operated separately. When the expansion shield cover 202 is two, it shows a semi-circular cross section, and protrudes in the left and right directions so that the exposed space is formed in the upper and lower portions, respectively. When the expansion shield cover 202 is three, it shows an arc-shaped cross section, the two expansion shield cover 202 to be inclined upwardly in the left and right directions, respectively, and the other expansion shield cover 202 is projected downward The exposure space is formed in the upper, lower left and lower right, respectively. When the expansion shield cover 202 is four, it shows an arc-shaped cross section, the two expansion shield cover 202 is projected to be inclined upwardly in the left and right directions, respectively, and the remaining two expansion shield cover 202 in the left and right directions Each of them protrudes downward so as to be formed at the top, bottom, left and right sides of the exposed space, respectively.

As shown in FIGS. 5 to 7, the extension shield driving unit 203 includes an extension guide bracket 2032 formed at an edge of the extension interlocking hole 2011 and an extension support bracket 2031 coupled to the extension guide bracket 2032. And an expansion driving unit 2034 coupled to the expansion support bracket 2031 for reciprocating the expansion shield cover 202, and slidably coupled to the expansion interlocking hole 2011 and the expansion guide bracket 2032. The expansion support block 2033 may be further included. Then, since the expansion driving unit 2034 slides the expansion support block 2033, the expansion shield cover 202 can protrude from the unit shield cylinder 201.

The expansion driving unit 2034 may include an expansion cylinder 2035 in which hydraulic pressure is generated and an expansion piston 2036 reciprocated in the expansion cylinder 2035 by hydraulic pressure. Then, the expansion cylinder 2035 is fixed to the expansion support bracket 2031, and the expansion piston 2036 expands the interlocking hole according to the operation of the expansion cylinder 2035 in the state where the expansion shield cover 202 is coupled. Slide in the extension guide bracket (2032).

In addition, when the extended support block 2033 is further included in the extended shield driver 203, the expansion cylinder 2035 is fixed to the expansion support bracket 2031, and the expansion piston 2036 is the expansion support block 2033. To be fixed at

The shield cylinder unit 200 extends the shield shield cover 204 and the shield shield cover 204 to close the exposure space generated between the expansion shield cover 202 adjacent to each other as the expansion shield cover 202 protrudes. The cover coupling part 205 may be further included to fix the shield cover 202.

The cover coupling portion 205 includes a coupling groove 205a formed in one side of the expansion shield cover 202 and the shield shield cover 204, and the expansion shield cover 202 and the shield shield cover 204. In the state supported by the assembling groove 205b recessed in the other, the communication hole 205c formed through one side of the assembling groove 205b to communicate with the coupling groove 205a, and the assembling groove 205b. It may include a shield coupling portion 205d that is screwed into the coupling groove 205a through the communication hole 205c. Then, the shield shield cover 204 can be detachably coupled to the expansion shield cover 202 through screwing using the shield coupling portion 205d in a state where the shield shield cover 204 is closed.

In addition, the cover coupling portion 205 includes a restriction stopper portion 205e for limiting the movement of the shield coupling portion 205d in a state where the shield coupling portion 205d is inserted into the communication hole 205c, and the assembly groove portion 205b. At least one of the opening and closing lid portion 205f for opening and closing may be further included.

The restriction stopper portion 205e is provided in the assembly groove portion 205b to prevent the shield coupling portion 205d from being separated from the assembly groove portion 205b.

The shield cylinder unit 200 is a first cylinder unit 210 detachably coupled to the head body 110 via the connection jack unit 400, and the first cylinder unit 210 via the connection jack unit 400. It may include a second cylinder unit 220 detachably coupled to).

The length of the first cylinder unit 210 and the second cylinder unit 220 may be substantially the same as the length of the shield tube of the segment (8).

The rear end of the shield cylinder unit 200 is rotatably coupled to the support blades 200a along the edge to prevent the filler material from flowing into the outer circumference of the shield cylinder unit 200. The support wing 200a protrudes to the outer circumferential surface of the shield cylinder unit 200 and is supported on the inner wall of the excavation hole.

In addition, the rear end portion of the second cylinder unit 220 in the shield cylinder unit 200 is rotatably coupled to the index seal portion 200b along the edge to prevent the introduction material is introduced into the shield cylinder unit 200. Can be. The index seal part 200b protrudes into the shield cylinder unit 200 and is supported by the shield pipe according to the assembly of the segment 8.

The propulsion jack unit 300 may include a propulsion cylinder coupled to the shield cylinder unit 200 to generate hydraulic pressure, and a propulsion piston reciprocated by hydraulic pressure from the propulsion cylinder. Propulsion jack unit 300 may be disposed two or more spaced apart from each other corresponding to the diameter of the excavation hole. One of the propulsion jack unit 300 is to be located in the lower portion of the shield cylinder unit 200 to replace the reciprocating rod driving unit 530 to be described later. The support collar 301 for coupling with the segment 8 may be detachably coupled to the propulsion piston of the propulsion jack unit 300.

Underground pipeline construction system according to an embodiment of the present invention is ground reinforcing perforation unit 500 for injecting the ground reinforcement liquid in front of the excavation unit 100, the excavation unit is coupled to the reciprocating movement of the excavation unit 100 A ground disintegration prevention unit 600 protruding forward of the 100 and provided to at least one of the excavation unit 100 and the shield cylinder unit 200 are provided with the earth and sand flowing into the excavation unit 100 to the oscillation side. The earth and sand conveying unit 700 for discharging, the segment 8 that can be assembled from the shield cylinder unit 200 to form an underground pipeline, and the propulsion pipe 3 that is supplied to the shield cylinder unit 200 for formation of the underground pipeline. ), The integrated control unit 800 for controlling the operation of the excavation unit 100 and the propulsion jack unit 300 and the connection jack unit 400, the excavation unit 100 and the propulsion jack unit 300 and the connection jack unit ( At least one of the hydraulic unit 900 for providing hydraulic pressure to 400 may be further included.

The ground reinforcing drilling unit 500 includes a drilling rod 510 for forming an injection path of ground reinforcing liquid, a horde rotation driving unit 520 for rotating the drilling rod 510, and a reciprocating movement of the drilling rod 510. The rod driving unit 530 and the reinforcing liquid pumping unit 540 for supplying the ground reinforcing liquid to the punching rod 510 may be included.

The drilling rod 510 shows a hollow tubular shape to allow the ground reinforcement to pass through. Perforated rod 510 may be coupled to each other more than the detachable corresponding to the injection position of the ground reinforcement liquid to adjust the overall length. The distal reinforcing liquid is ejected to the distal end of the punching rod 510, and the spraying unit 511 for preventing the soil from flowing into the punching rod may be detachably coupled.

The reciprocating rod driving unit 530 may include any one of the pushing jack unit 300.

Accordingly, the ground reinforcing drilling unit 500 may further include a reciprocating guide part 550 to slidably connect the reciprocating rod driving part 530 to the shield cylinder unit 200.

The reciprocating guide part 550 includes a slider 531 provided in the reciprocating rod driving part 530, a guide rail 533 provided in the shield cylinder unit 200, to which the slider 531 is slidably movable, and a slider. 531 and a detachable member 535 for detachably connecting the guide rails 533 may be included.

The slider support protrusion 5311 may protrude from the slider 531. The slider support groove portion 5312 may be recessed in the slider 531. The slider support groove portion 5312 may be formed by two slider support protrusions 5311 protruding from each other.

The rail support protrusion 5313 may protrude from the guide rail 533. The rail support groove 5332 may be recessed in the guide rail 533. The rail support groove portion 5332 may be formed by two rail support protrusions 5331 protruding from each other.

Then, the support protrusions are to be fitted with the support grooves facing.

One of the sliders 531 and the guide rails 533 may protrude from the restriction guide 5333 surrounding the other of the sliders 531 and the guide rails 533.

The reciprocating guide part 550 further includes a first coupling hole 532 formed through the slider 531 and a second coupling hole 534 protruding from the guide rail 533, and the detachable member 535 includes: The first coupling hole 532 and the second coupling hole 534 which are in communication with each other are fitted.

The ground collapse preventing unit 600 includes a shielding plate part 601 which is slidably coupled to the excavation unit 100, and the shielding plate part 601 to the excavation unit 100 so as to protrude forward of the excavation unit 100. It may be coupled to include a prevention driving unit for sliding the screen plate portion 601.

The obstruction plate part 601 may have an arc-shaped cross section corresponding to the excavation head 120.

The prevention driving unit may include a prevention cylinder 603 coupled to the excavation unit 100 to generate hydraulic pressure, and a prevention piston 604 reciprocally moved from the prevention cylinder 603 by hydraulic pressure. The anti-piston 604 is slidably supported by the support guide 602, and the blocking plate 601 is coupled to the front end portion thereof.

Then, the projecting plate part 601 protrudes forward in accordance with the operation of the preventive driving part in the upper part of the excavation unit 100, so that when the worker is working in front of the excavation unit 100, the earth and sand of Jisan fall of the excavation hole Guided to the side, it can prevent the safety accident of the worker working in front of the excavation unit (100).

The ground collapse preventing unit 600 is advantageously applied to the open type excavation unit 100.

The earth and sand conveying unit 700 may be applied to at least one of a well-known earth pressure, water pressure, ino formula.

The integrated control unit 800 may also control the hydraulic operation of the ground reinforcement drilling unit 500, the ground collapse prevention unit 600, and the soil transfer unit 800.

2-10 and 11-17, the segment 8 according to one embodiment of the present invention forms a plurality of cylindrical shield tubes for use in the practice of the shielding method.

The segment 8 according to an embodiment of the present invention has an arc shape in which a plurality of cylinders are divided into a plurality of cylinders by a combination of a steel frame 9 and a concrete layer 10, which is a ceramic layer installed inside the steel frame 9. Is formed.

In the concrete layer 10, the injection hole 11 of the immersion material located on the inner surface side of the arc of the concrete layer 10, the discharge hole 12 of the plural sorbent material located in four corners and the like on the outer surface side of the concrete layer 10, A passage 13 connecting the inlet 11 and the outlet 12 is provided.

The injection port 11 is equipped with a check valve (not shown) so that the injected filler material does not flow back.

The discharge ports 12 are provided at a plurality of points on the outer surface side of the concrete layer 10, and the passages 13 are installed to connect one injection hole 11 and the plurality of discharge holes 12.

The passage 13 is a pipe for forming the injection hole 11 and the plurality of discharge ports 12 in the space in the mold frame at the time of molding the concrete layer 10 using the mold frame, the injection hole 11 and the plurality of discharge holes 12. Can be formed by piping a pipe to be a passage 13 for connecting the pipes and embedding these pipes by pouring concrete.

The steel frame 9 is formed into a rectangular frame with a shape having a cross-sectional shape in which a flange 9b at right angles is provided at one edge of the outer circumferential plate 9a and a buried plate 9c at right angles is installed at the other edge. At the same time as assembly, both parts along the circumferential direction are shaped into an arc shape.

The concrete layer 10 enters into the space enclosed by the flange 9b of the steel frame 9 and forms the buried plate 9c in a buried shape so as to be integrally integrated with the steel frame 9 and between the flange 9b. It is formed to a predetermined thickness (65mm to 75mm, substantially 70mm) to form the gap 14, reinforced by reinforcing bars 15 embedded therein, the outer diameter surface of the concrete layer 10 and the steel frame The outer circumferential plate (9a) of (9) is finished with a flat surface that is the same surface, the inner diameter surface of the concrete layer 10 to protrude inward than the steel frame (9).

Adjacent segments 8 overlap the flanges 9b provided on the outer circumference of the steel frame 9 to fix both flanges 9b with bolts, or by fitting through the clip brackets 16 of the segments 8. Joining in the radial direction and the axial direction can be performed.

In the joining of the segment 8, an expandable seal can be fitted between the flanges 9b so that the index of the connection part can be reliably obtained, or the gap 14 can be used to fill the connection part with a seismic filler. have.

The passage 13 of the segment 8 is provided to connect one inlet 11 of the segment 8 and the plurality of outlets 12, but the passage of the segment 8 divided into a plurality of segments for assembling the pipe. (13) can be connected at the time of assembling the shield pipe, and when the inlet material is injected from one inlet 11, the outlet material of each segment 8 can be simultaneously discharged.

For the formation of the shield tube, the segment 8 consists of four divisions of the lower segment 8a and the two side segments 8b and the narrow upper segment 8c, and the passage 13 of the lower segment 8a It is provided to reach both ends in the circumferential direction of the lower segment 8a, and the passage 12 of the both segment 8b is installed to reach the lower end of the circumferential direction of the both side segments 8b, and at the time of assembling the shield pipe. The passages 13 of the segments 8a and 8b are connected to each other using joint means 17 such as a joint pipe, and the inlet valve 18 is interposed from the inlet 11 of the lower segment 8a. It is supposed to inject the sorbent material. In one example, the inner diameter of the shield tube assembled by the segment 8 is about 1000 mm to 1350 mm, and the width of the segment 8 is 600 mm.

A hetero shielding method according to an embodiment of the present invention will be described.

In the construction of the propulsion method, the shield cylinder unit 2 is disposed between the excavation unit 100 and the propulsion pipe 3 on the oscillation side, and the excavation by the excavation unit 100 and the rear end of the propulsion pipe 3 are introduced. The propulsion method is started by pressurizing with the propulsion jack, and the new propulsion pipe 3 is successively connected to the rear end side of the propulsion pipe 3.

At this time, the shield cylinder unit 200 connects the collar segment 5 to the distal end of the propulsion pipe 3 to bring the propulsion jack unit 300 into contact with the distal end surface of the attachment segment 5a.

When the propulsion pipe 3 cannot be propelled by the thrust by the propulsion jack 4 for propulsion in the propulsion method, the propulsion method is stopped and the shield is promptly shielded while the underground pipe is formed by the propulsion pipe 3. In the cylinder unit 200, the segment 8 is used to switch to the shield method for constructing the underground pipeline.

Switching of the shielding method can be performed immediately when an operator enters the shield cylinder unit 200 in the underground pipeline by the propulsion pipe 3, so if the time required for switching is about 1 hour, the waiting time is short. Significantly shortening is possible.

In the construction of the shield method, in order to perform the shield method, the propulsion jack unit 300 is shrunk, and the segment 8 carried into the shield cylinder unit 200 is assembled into a cylindrical shield tube, and the shield tube is assembled. Segment 8 assembled with a shield pipe while extending the propulsion jack unit 300 in a connected state brought into contact with the attachment segment 5a of the collar segment 5 and operating the excavation unit 100. As a reaction force, the shield cylinder unit 200 and the excavation unit 100 are advanced by the length of the shield tube of the segment 8.

When the shield cylinder unit 200 and the excavation unit 100 are advanced, the propulsion jack unit 300 is contracted, and the segment 8 is reassembled into a cylindrical shield tube in the shield cylinder unit 200 to prevent the front shield. Connect to the pipe. When the propulsion jack unit 300 is extended again, the shield tube of the segment 8 assembled in the state where the excavation unit 100 is operated is used as a reaction force, and the shield cylinder unit 200 and the excavation unit 100 are segmented (8). Advance by the length of the shield tube by

By repeating the assembly of the segment 8 and the advancement by the expansion and contraction of the propulsion jack unit 300 over the required length, the collar pipe 5 and the segment 8 at the tip of the propulsion pipe 3 are used as an underground pipe line. Can be constructed, and continuous underground pipe passages are obtained from the shield pipe by the propulsion pipe 3, the collar segment 5, and the segment 8.

In the construction of the shield method, when the assembling of the shield pipe by the segment 8 is completed, when the injection material is injected from one injection port 11 provided in the segment 8, the excavation is simultaneously carried out from the plurality of discharge ports 12. It is possible to inject the inlet material into the separation space generated in the outer diameter of the ball and the shield tube, so that the surrounding material of the inlet material to the separation space can be improved, and the efficiency of the work of injecting the inlet material can be improved and the formation of a high quality inlet material layer can be realized. .

In particular, when the passages 13 of the plurality of segments 8 combined with the formation of the shield tube are connected to each other using the joint means 17 in the circumferential direction of the segment 8, the outer diameter of the excavation hole and the shield tube With respect to the entire circumference of the generated space, it is possible to completely inject the import material uniformly from one in a short time, thereby improving the efficiency of the injection work of the import material and forming a high quality import material layer.

Then, by using at least one of the propulsion method and the shield method from the oscillation side to the arrival side, an underground pipeline having the same set diameter is obtained.

In particular, the hetero-shield method according to an embodiment of the present invention by using the underground pipeline construction system according to an embodiment of the present invention by advancing the excavation unit 100 according to the expansion of the jack jack 300, excavation hole It is a shield construction method of the underground pipe line which forms and forms the underground pipe line in which the shield pipe was formed by providing the segment 8 in an excavation hole.

In the heterogeneous shielding method according to an embodiment of the present invention, when the underground pipe construction system reaches a position for changing the set diameter of the underground pipe between the oscillation side and the reaching side, the side bit reciprocating part 140 corresponds to the changed set diameter. ) To reciprocate the side bit 123 from the excavation head 120, and then to extend the propulsion jack unit 300 in the state of operating the excavation unit 100 to shield the cylinder unit 200 and excavation unit ( The expansion shield provided in the shield cylinder unit 200 in response to the set diameter changed so that the 200 is advanced by the length of the shield pipe of the segment 8 and the expansion shield cover 202 is supported on the inner wall of the changed drilling hole. The driving unit 203 is operated to reciprocate the expansion shield cover 202 from the unit shield cylinder 201.

More specifically, in the case of expanding the underground pipe line between the oscillation side and the arrival side, when the underground pipeline construction system according to an embodiment of the present invention reaches the expansion position of the excavation hole between the oscillation side and the arrival side, the excavation unit 100 Side side reciprocating section 140 at the initial position to protrude the side bit 123 from the excavation head 120, and then extending the jack jack unit 300 while operating the excavation unit 100 As the reaction force of the segment 8 assembled by the shield tube, the shield cylinder unit 200 and the excavation unit 100 are advanced by the length of the shield tube of the segment 8 to form an extended drilling hole. In the state in which the side bit 123 protrudes, it is possible to extend the extended drilling hole according to the expansion and contraction of the propulsion jack unit 300.

Here, when the shield cylinder unit 200 and the excavation unit 100 is advanced by the length of the shield pipe, the first cylinder unit 210 of the shield cylinder unit 200 is disposed in the expanded drilling hole, the first cylinder unit The expansion shield driving unit 203 provided at 210 is operated, and the expansion shield cover 202 provided at the first cylinder unit 210 is supported on the inner wall of the excavated hole which is spaced apart from the unit shield cylinder 201. do.

Similarly, when the shield cylinder unit 200 and the excavation unit 100 are advanced by the length of the shield pipe and the second cylinder unit 220 of the shield cylinder unit 200 is disposed in the expanded drilling hole, the second cylinder unit The expansion shield driving unit 203 provided in the 220 is operated, and the expansion shield cover 202 provided in the second cylinder unit 220 is supported on the inner wall of the excavated hole which is spaced apart from the unit shield cylinder 201. do.

Subsequently, as the segment 8 is installed in the enlarged excavation hole while forming the expanded excavation hole, the underground pipeline can be expanded without replacing the construction system between the oscillation side and the arrival side.

In this case, as the expansion shield cover 202 is spaced apart from the unit shield cylinder 201, an exposed space is formed between two adjacent expansion shield covers 202. Accordingly, by placing the shield shield cover 204 in the exposure space, and the shield shield cover 204 to the expansion shield cover 202, the exposure is disposed at least in the upper portion of the exposed space between the expansion shield cover 202 The space is closed by the shield shield cover 204 to prevent foreign substances falling from the acid from entering the inside of the shield cylinder unit 200, and the malfunction of the expansion shield driver 203 in the shield cylinder unit 200 is prevented. When the expansion shield cover 202 returns to its original position by preventing foreign substances from entering between the expansion shield cover 202 and the unit shield cylinder 201, the expansion shield cover 202 is provided in the unit shield cylinder 201. Ensure stable support.

Then, as shown in FIG. 10, the set diameter represents the first diameter d1 on the oscillation side, and the set diameter represents the second diameter d2 larger than the first diameter d1 on the reaching side.

On the contrary, when the underground pipe line is reduced between the oscillation side and the reaching side, the side bit 123 protrudes from the excavation head 120 in the underground pipe line construction system according to an embodiment of the present invention, and the unit shield tube ( The expansion shield cover 202 is spaced apart from the 201, and the shielding cylinder unit 200 and the excavation unit 100 are advanced by the length of the shield pipe according to the expansion and contraction of the propulsion jack unit 300 to form an excavation hole. Doing.

When the underground pipeline construction system according to an embodiment of the present invention reaches the reduced position of the excavation hole between the oscillation side and the reaching side, the side bit reciprocating part 140 is operated to return the side bit 123 to the initial position. In addition, the shield cylinder unit 200 and the excavation unit 100 are advanced by the length of the shield tube of the segment 8 to form a reduced excavation hole. Then, in the state in which the side bit 123 is returned to its original position, it is possible to extend the digging hole reduced according to the expansion and contraction of the pushing jack unit 300.

When the first cylinder unit 210 of the shield cylinder unit 200 approaches the reduced excavation hole, the expansion shield driver 203 is operated to return the expansion shield cover 202 to the initial position. As the first cylinder unit 210 is inserted into the reduced drilling hole, the expansion shield cover 202 of the first cylinder unit 210 is supported by the inner wall of the reduced drilling hole. In addition, when the second cylinder unit 220 of the shield cylinder unit 200 approaches the reduced drilling hole, the expansion shield driver 203 is operated to return the expansion shield cover 202 to the initial position. As the second cylinder unit 220 is inserted into the reduced excavation hole, the expansion shield cover 202 of the second cylinder unit 220 is supported by the inner wall of the reduced excavation hole.

Subsequently, as the segment 8 is installed in the reduced excavation hole while forming the reduced excavation hole, the underground pipeline can be expanded without replacing the construction system between the oscillation side and the arrival side.

At this time, as the expansion shield cover 202 returns to the initial position, the shield shield cover 204 is separated from the expansion shield cover 202.

The hetero shield method described above may form a pipe changing side such as the oscillating side or the reaching side at a position where the set diameter of the underground pipe is changed in correspondence with the expansion position or the reduction position of the underground pipe between the oscillation side and the arrival side. In an embodiment of the present invention, since the set diameter of the underground pipe is expanded as shown in FIG. 10, the pipe change side may be formed as an expansion side. Although not shown, when the set diameter of the underground pipe is reduced, the pipe change side may be a side.

According to the above-described underground pipeline construction system and the hetero shield method using the same, in constructing the underground pipeline from the oscillation side to the arrival side, the diameter of the underground pipeline can be stably reduced or expanded without replacing the construction system.

In addition, in forming the underground pipeline, it is possible to stably adjust the diameter of the underground pipeline while minimizing the space between the Jisan and the segment (8).

In addition, according to the reciprocating operation of the side bit 123, the diameter of the excavation hole for forming the underground pipeline can be stably expanded or reduced.

In addition, when the drilling head 120 is rotated in Jisan, the flow of the side bit 123 in the drilling head 120 can be suppressed or prevented, and the diameter of the drilling hole according to the drilling can be stably maintained.

In addition, as the diameter of the shield cylinder unit 200 decreases or expands in response to the diameter reduction or the diameter expansion of the drilling hole through the drilling head 120, the shield cylinder unit 200 is subjected to frictional resistance with Jisan in the drilling hole. The reaction force can be generated stably, and when the excavation head 120 is rotated, the shield cylinder unit 200 is stably supported in Jisan.

In addition, it is possible to stably close the opening portion according to the expansion of the shield cylinder unit 200, and to prevent the residue falling from Jisan from flowing between the unit shield cylinder 201 and the expansion shield cover 202. have.

In addition, the drilling depth of the excavation unit 100 can be stably adjusted through the propulsion jack unit 300.

In addition, the connection jack unit 400 facilitates the detachment of the excavation unit 100 and the shield cylinder unit 200 and the detachment between the first cylinder unit 210 and the second cylinder unit 220, and the shield cylinder unit ( According to the expansion or reduction of the 200, it is possible to conveniently replace the second cylinder unit 220.

In addition, since the ground reinforcing drilling unit 500 is operated in conjunction with the propulsion jack unit 300, it is possible to reduce the number of parts in the shield cylinder unit 200, to secure the internal space of the shield cylinder unit 200 The worker can be moved smoothly.

In addition, when working in front of the excavation unit through the ground collapse prevention unit 600, it is possible to stably protect the worker in accordance with the collapse of the ground.

In addition, through the hydraulic unit 900 and the integrated control unit 800, the head drive unit 130, side bit reciprocating unit 140, expansion shield driving unit 203, propulsion jack that is hydraulically applied to the underground pipeline construction system Unit 300, the connection jack unit 400, the ground reinforcing drilling unit 500, the ground decay prevention unit 600, the earth and sand conveying unit 700 can be integrated to control.

While the preferred embodiments of the present invention have been described with reference to the drawings as described above, those skilled in the art will appreciate that the present invention may be modified in various ways without departing from the spirit and scope of the invention as set forth in the claims below. Can be modified or changed.

1: Excavator 2: Shield Bucket 3: Propulsion Tube
4: prop jack 5: collar segment 5a: attachment segment
6: Diameter diameter 7: Index room 8: Segment
8a: lower segment 8b: both segments 8c: upper segment
9: steel frame 9a: outer plate 9b: flange
9c: landfill plate 10: concrete 11: injection hole
12: discharge port 13: passage 14: gap
15: rebar 16: clip bracket 17: joint means
18: injection valve
100: drilling unit 110: head body 120: drilling head
121: head ring portion 1211: bit reciprocating hole 122: closing guide
123: side bit 124: front bit 130: head drive unit
140: side bit reciprocating part 141: fixing bracket 142: guide bracket
143: bit coupling member 144: reciprocating drive 1441: reciprocating cylinder
1442: reciprocating piston 200: shield cylinder unit 200a: support wing
200b: still water seal portion 210: first cylinder unit 220: second cylinder unit
201: unit shield container 2011: expansion interlocking hole 202: expansion shield cover
203: extension shield drive unit 2031: extension support bracket 2032: extension guide bracket
2033: expansion support block 2034: expansion driving unit 2035: expansion cylinder
2036: expansion piston 204: blind shield cover 205: cover coupling portion
205a: coupling groove 205b: assembly groove 205c: communication hole
205d: shield coupling portion 205e: restriction stopper portion 205f: opening and closing lid portion
300: propulsion jack unit 301: support color 400: connection jack unit
500: ground reinforcing drilling unit 510: punching rod 511: injection unit
520: rod rotation driving unit 530: reciprocating rod driving unit 531: slider
5311: slider support protrusion 5312: slider support groove portion 532: first coupling hole
533: guide rail 5331: rail support protrusion 5332: rail support groove
5333: restriction guide 534: second coupling hole 535: removable member
540: reinforcing liquid pumping unit 550: reciprocating guide unit 600: ground collapse prevention unit
601: blanking plate portion 602: support guide 603: prevention cylinder
604: prevention piston 700: soil transport unit 800: integrated control unit
900: hydraulic unit

Claims (10)

Excavation unit for excavating Jisan in front of the rotation;
A shield cylinder unit detachably coupled to the excavation unit;
A propulsion jack unit having two or more spaced apart from the inner circumferential surface of the shield cylinder unit and providing a driving force to the excavation unit and the shield cylinder unit; And
A connection jack unit for detachably connecting the excavation unit and the shield cylinder unit to each other; Including,
A ground reinforcing drilling unit for injecting ground reinforcing liquid in front of the drilling unit; And
A ground collapse preventing unit that is coupled to the drilling unit so as to reciprocate and protrudes forward of the drilling unit; At least one of the more,
The excavation unit,
A head body detachably coupled to the shield cylinder unit via the connection jack unit;
An excavation head rotatably coupled to the head body for excavation of the jisan, and having at least a side bit disposed between a side bit disposed at a circumferential surface and a front bit disposed at a front surface thereof;
A head driving part which rotates the drilling head with respect to the head body; And
A side bit reciprocating portion for reciprocating the side bit such that the side bit can protrude from the excavation head; Including;
The shield cylinder unit,
A unit shield container detachably coupled to the head body via the connection jack unit;
An expansion shield cover separated from each other by at least two and provided on an outer circumferential surface of the unit shield container; And
An expansion shield driver for reciprocating the expansion shield cover to allow the expansion shield cover to protrude from the unit shield cylinder; Including;
The ground reinforcing drilling unit,
A drilling rod forming an injection path of the ground reinforcement liquid;
A rod rotating driver for rotating the perforated rod;
A reciprocating rod driver for reciprocating the perforated rod; And
Reinforcement liquid pumping unit for supplying the ground reinforcement liquid to the drilling rod; Underground pipeline construction system comprising a.
Excavation unit for excavating Jisan in front of the rotation;
A shield cylinder unit detachably coupled to the excavation unit;
A propulsion jack unit having two or more spaced apart from the inner circumferential surface of the shield cylinder unit and providing a driving force to the excavation unit and the shield cylinder unit; And
And a connecting jack unit for detachably connecting the excavation unit and the shield cylinder unit to each other.
The excavation unit,
A head body detachably coupled to the shield cylinder unit via the connection jack unit;
An excavation head rotatably coupled to the head body for excavation of the jisan, and having at least a side bit disposed between a side bit disposed at a circumferential surface and a front bit disposed at a front surface thereof;
A head driving part which rotates the drilling head with respect to the head body; And
And a side bit reciprocating portion configured to reciprocate the side bit such that the side bit protrudes from the excavation head.
The shield cylinder unit,
A unit shield container detachably coupled to the head body via the connection jack unit;
An expansion shield cover separated from each other by at least two and provided on an outer circumferential surface of the unit shield container;
An expansion shield driver for reciprocating the expansion shield cover to allow the expansion shield cover to protrude from the unit shield cylinder;
A shield shield cover that closes the exposure space generated between the expansion shield covers adjacent to each other as the expansion shield cover protrudes; And
And a cover coupling part configured to fix the screen shield cover to the expansion shield cover.
The cover coupling portion,
A coupling groove recessed in one side of the expansion shield cover and the shield shield cover;
An assembly groove recessed in another one of the expansion shield cover and the shield shield cover;
A communication hole formed through one side surface of the assembly groove so as to communicate with the coupling groove; And
And a shield coupling part which is screwed to the coupling groove part through the communication hole part while being supported by the assembly groove part.
The method according to claim 1 or 2,
The shield cylinder unit,
A first cylinder unit detachably coupled to the head body via the connection jack unit; And
And a second cylinder unit detachably coupled to the first cylinder unit via the connection jack unit.
The method of claim 2,
A ground reinforcing drilling unit for injecting ground reinforcing liquid in front of the drilling unit;
A ground collapse preventing unit that is coupled to the drilling unit so as to reciprocate and protrudes forward of the drilling unit;
An earth and sand transport unit provided in at least one of the excavation unit and the shield cylinder unit to discharge the earth and sand introduced into the excavation unit to the oscillation side;
A segment assembleable from the shield barrel unit to form an underground pipeline;
A propulsion pipe supplied to the shield cylinder unit to form an underground pipe passage;
An integrated control unit controlling the operation of the excavation unit, the propulsion jack unit, and the connection jack unit; And
A hydraulic unit for providing hydraulic pressure to the excavation unit, the propulsion jack unit and the connection jack unit;
Underground pipeline construction system, characterized in that it further comprises at least one of.
The method of claim 4, wherein
The ground reinforcing drilling unit,
A drilling rod forming an injection path of the ground reinforcement liquid;
A rod rotating driver for rotating the perforated rod;
A reciprocating rod driver for reciprocating the perforated rod; And
Reinforcement liquid pumping unit for supplying the ground reinforcement liquid to the drilling rod; underground pipe construction system comprising a.
The method of claim 5,
The reciprocating rod drive portion,
Underground pipeline construction system, characterized in that any one of the propulsion jack unit is included.
The method according to claim 1 or 4,
The ground collapse preventing unit,
A blind plate part coupled to the excavation unit to be slidably movable;
And a prevention driving part coupled to the excavation unit so that the obstruction plate part protrudes forward of the excavation unit and slidingly move the obstruction plate part.
According to claim 1 or 2, using the underground pipeline construction system according to the expansion of the propulsion jack unit to advance the excavation unit to form an excavation hole, and install a segment in the excavation hole in the underground pipe passage It is a shield method of underground pipe to construct
When the underground pipeline construction system reaches a position that changes the set diameter of the underground pipeline between the oscillation side and the arrival side,
Corresponding to the set diameter to be changed by operating the side bit reciprocating portion to reciprocate the side bit from the excavation head, and then extending the propulsion jack unit in the state of operating the excavation unit to extend the shield cylinder unit and the excavation Advance the unit by the length of the shield tube of the segment,
The expansion shield cover is reciprocated from the unit shield cylinder by operating the expansion shield driver provided in the shield cylinder unit in response to the set diameter changed to support the expansion shield cover on the inner wall of the changed excavation hole. Hetero-shield method.
The method of claim 8,
The segment is
A plurality of cylindrical shield tubes are formed,
Formed by a combination of a steel frame and a ceramic layer provided inside the steel frame,
In the ceramic layer,
An inlet for the inlet material located on the inner surface side of the ceramic layer, an outlet for the inlet material located on the outer surface side of the ceramic layer, and a passage connecting the inlet and the outlet port,
The injection port is equipped with a check valve,
The discharge port is provided at a plurality of points on the outer surface side of the ceramic layer,
And the passage is provided to connect the inlet and the plurality of outlets.
The method of claim 8,
Hetero-shield method, characterized in that the pipe changing side is formed at a position where the set diameter of the underground pipe is changed between the oscillation side and the reaching side.

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