CN108756896B - Method for removing underground obstacle - Google Patents

Method for removing underground obstacle Download PDF

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Publication number
CN108756896B
CN108756896B CN201810517352.2A CN201810517352A CN108756896B CN 108756896 B CN108756896 B CN 108756896B CN 201810517352 A CN201810517352 A CN 201810517352A CN 108756896 B CN108756896 B CN 108756896B
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China
Prior art keywords
obstacle
cutter head
underground
clearing
obstacles
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CN201810517352.2A
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Chinese (zh)
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CN108756896A (en
Inventor
胡晓虎
陈晓明
罗鑫
赵培
张顺
陶家昕
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Captain Shanghai Geotech Co ltd
Shanghai Mechanized Construction Group Co Ltd
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Captain Shanghai Geotech Co ltd
Shanghai Mechanized Construction Group Co Ltd
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Priority to CN201810517352.2A priority Critical patent/CN108756896B/en
Publication of CN108756896A publication Critical patent/CN108756896A/en
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    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/06Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
    • EFIXED CONSTRUCTIONS
    • E21EARTH DRILLING; MINING
    • E21DSHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10Making by using boring or cutting machines

Abstract

The invention provides a method for clearing underground obstacles, which comprises the following steps: forming a working well, wherein the area to be cleared of the obstacles is positioned at the side wall of the working well; cutting obstacles in a working well along a first direction and removing waste residues to form a drilled hole, wherein an included angle is formed between the first direction and the height direction of the working well; injecting a filler into the borehole; repeating the processes of forming the drill hole and injecting the filler into the drill hole until the obstacles are removed to a set standard; and cutting the area of the space surrounded by all the drill holes to form the tunnel. The method provided by the invention can be used for drilling in the horizontal direction under the ground, and can effectively remove underground obstacles under the conditions that the ground space is narrow, the surrounding environment is complex, other immovable structures are arranged above the obstacles, the environmental influence is small, and the working efficiency is high.

Description

Method for removing underground obstacle
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to a method for removing underground obstacles.
Background
For underground engineering, if a large-volume and hard underground obstacle is detected, the design scheme is sometimes required to be changed and even planned, which is generally difficult to achieve, and all aspects are expected to be solved by advanced construction technical means; the radar detection, pretreatment and workload are large, and obstacles cannot be directly cleared; the method has the advantages that the method is used for direct excavation, is suitable for suburbs, has low requirements on the surrounding environment, and is not suitable for most of the existing municipal underground engineering projects in busy and downtown centers; generally, a ground drilling machine is considered to vertically remove obstacles, but if the ground vertical obstacle removal does not have conditions, such as narrow ground space, complex surrounding environment, other immovable structures above the obstacles, and the like; the underground blasting direction is not easy to control, the steel bars in the barriers are still retained, and the safety problem cannot be guaranteed when the operation structures are close to; the freezing method is a relatively mature process, but the freezing time is long, huge energy is consumed, weak links are easy to exist during freezing, water burst risks exist during excavation, freezing expansion and thawing sinking are difficult to control, and when obstacles are removed, personnel are required to reach an excavation surface, so that the environment is severe and dangerous.
Disclosure of Invention
The invention aims to provide a method for clearing an underground obstacle, which aims to solve the problems that the ground space is narrow, the surrounding environment is complex and other immovable structures are difficult to clear when the obstacle is cleared.
In order to achieve the above object, the present invention provides a method for removing an underground obstacle, comprising the steps of:
forming a working well, wherein the area to be cleared of the obstacles is positioned at the side wall of the working well;
cutting obstacles in a working well along a first direction and removing waste residues to form a drilled hole, wherein an included angle is formed between the first direction and the height direction of the working well;
injecting a filler into the borehole;
repeating the processes of forming the drill hole and injecting the filler into the drill hole until the obstacles are removed to a set standard; and
and cutting the area of the space surrounded by all the drill holes to form the tunnel.
Optionally, the first direction is a horizontal direction, and the height direction of the working well is a vertical direction.
Optionally, a working well is formed at one side of the region where the obstacle is to be removed.
Optionally, when the bore hole is repeatedly formed, the bore hole is drilled from bottom to top within the range of the obstacle to be cleared.
Alternatively, there is overlap between each formation of a bore.
Optionally, the obstacle includes at least one of a ground wall reinforcement cage, a section steel column, a C50 reinforced concrete segment, and a high-strength bolt between segments.
Optionally, adopt first clearance barrier equipment to drill, first clearance barrier equipment includes drilling rod and tool bit, the diameter range of drilling rod is 0.8 ~ 1.2m, the tool bit includes ordinary tool bit and special tool bit, special tool bit is used for abolishing the barrier.
Optionally, the step of forming the bore hole comprises:
the first obstacle removing device firstly uses a common cutter head to drill a hole;
when the common cutter head meets the obstacle, the common cutter head is replaced by the special cutter head;
breaking the barrier by using the special cutter head;
and replacing the special cutter head with the common cutter head, and continuously drilling.
Optionally, when the common cutter head meets the obstacle, the first obstacle removing device retracts into the working well to replace the common cutter head with the special cutter head.
Optionally, after the special cutter head breaks the obstacle, the first obstacle removing device returns to the working well to replace the special cutter head with the common cutter head.
Optionally, the tunnel is formed by cutting the area of the space surrounded by all the drilled holes with a second obstacle removing device.
Optionally, the second obstacle removing device is a shield machine.
Optionally, the second obstacle removing device cuts a region of the space surrounded by all the drill holes from the working well to form a tunnel.
Optionally, the filler is a quick-setting filler.
In summary, the method for clearing underground obstacles provided by the invention comprises the following steps: forming a working well, wherein the area to be cleared of the obstacles is positioned at the side wall of the working well; cutting obstacles in a working well along a first direction and removing waste residues to form a drilled hole, wherein an included angle is formed between the first direction and the height direction of the working well; injecting a filler into the borehole; repeating the processes of forming the drill hole and injecting the filler into the drill hole until the obstacles are removed to a set standard; and cutting the area of the space surrounded by all the drill holes to form the tunnel. The method provided by the invention can be used for drilling in the horizontal direction under the ground, and can effectively remove underground obstacles under the conditions that the ground space is narrow, the surrounding environment is complex, other immovable structures are arranged above the obstacles, the environmental influence is small, and the working efficiency is high.
Drawings
FIG. 1 is a schematic flow diagram of a method for removing subsurface obstructions in accordance with an embodiment of the present invention;
FIG. 2 is a schematic diagram of full hole punching within the obstacle clearance range according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of an underground barrier clearing construction in accordance with an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a tube sheet support in an embodiment of the present invention within a well;
FIG. 5 is a cross-sectional view of a first barrier clearance apparatus installed in a workstring in an embodiment of the present invention;
FIG. 6 is a sectional view of a first obstacle removing device for removing obstacles using a conventional cutter head according to an embodiment of the present invention;
FIG. 7 shows an embodiment of the present invention in which a conventional tool bit is retracted into a work well after hitting a first underground wall
A section view of the special cutter head;
FIG. 8 is a cross-sectional view of a first obstacle removing device for removing a first underground diaphragm wall using a special cutter head according to an embodiment of the present invention;
FIG. 9 is a cross-sectional view of a special tool bit in an embodiment of the present invention after the first connecting wall is broken and then the special tool bit is returned to the working well for replacing a conventional tool bit;
FIG. 10 is a sectional view of a first obstacle removing device for continuing obstacle removal using a conventional cutter head according to an embodiment of the present invention;
FIG. 11 is a cross-sectional view of a conventional tool bit in an embodiment of the present invention retracted into the work well after encountering a second wall to replace a special tool bit;
FIG. 12 is a cross-sectional view of a first obstacle removing device for hole-by-hole removal of an underground wall in accordance with an embodiment of the present invention;
FIG. 13 is a cross-sectional view of a second obstacle clearing apparatus for clearing away filler in an embodiment of the invention;
wherein, 11-the area of the obstacle to be cleared, 12-the pipe curtain support, 21-the immovable building, 22-the soil body, 23-the first obstacle clearing device, 231-the common cutter head, 232-the special cutter head, 24-the filler, 25-the pipe curtain support, 26-the underground diaphragm wall, 261-the first underground diaphragm wall, 262-the second underground diaphragm wall, 263-the third underground diaphragm wall, 27-the working well, 28-the second obstacle clearing device, and 29-the tunnel.
Detailed Description
The following describes in more detail embodiments of the present invention with reference to the schematic drawings. Advantages and features of the present invention will become apparent from the following description and claims. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention.
As described in the background art, in the underground engineering construction process, an obstacle containing steel bars and steel materials is one of the most difficult objects to remove, and at this time, if the ground vertical obstacle removal has no conditions, such as a narrow ground space and a complex surrounding environment, other immovable structures are arranged above the obstacle, so that the obstacle removal is difficult.
Accordingly, in order to solve the above problems in the construction of underground works, the present invention provides a method of removing underground obstacles.
Referring to fig. 1, which is a schematic flow chart of a method for removing an underground obstacle according to an embodiment of the present invention, as shown in fig. 1, the method for removing an underground obstacle includes the following steps:
step S1: forming a working well, wherein the area to be cleared of the obstacles is positioned at the side wall of the working well;
step S2: cutting obstacles in a working well along a first direction and removing waste residues to form a drilled hole, wherein an included angle is formed between the first direction and the height direction of the working well;
step S3: injecting a filler into the borehole;
step S4: repeating the processes of forming the drill hole and injecting the filler into the drill hole until the obstacles are removed to a set standard; and
step S5: and cutting the area of the space surrounded by all the drill holes to form the tunnel.
In step S1, as shown in fig. 3, fig. 3 is a cross-sectional view of a construction for removing underground obstacles according to an embodiment of the present invention, and the working well 27 may be implemented by using the prior art, for example, the bottom of the working well may be lower than the area to be removed, so as to facilitate the construction. Further, only one working well needs to be formed at one side of the area where the obstacles are to be removed.
Specifically, before step S1, a pipe curtain support is disposed around the region to be cleared, specifically, referring to fig. 2 and 4, a pipe curtain support 12 is disposed around the region 11 to be cleared within a range of 1m to 3m, and preferably, a pipe curtain support 12 is disposed around the region 2m, in the working well, and further, the pipe curtain support is a unique underground space construction method, in which steel pipes with larger diameters are closely arranged and engaged with each other in the underground to form a steel pipe curtain in advance, and then excavation is performed under the protection of the steel pipe curtain, so as to construct an underground space with a large cross section, and prevent collapse of the construction region during construction.
Specifically, step S2 includes: erecting first obstacle removing equipment in the working well, wherein the first obstacle removing equipment cuts obstacles along a first direction and removes waste residues to form a drilled hole, an included angle is formed between the first direction and the height direction of the working well, and further the first direction is a horizontal direction and the height direction of the working well is a vertical direction; the obstacles include, but are not limited to, a ground wall reinforcement cage, section steel columns, C50 reinforced concrete segments and high-strength bolts between segments. Further, the first obstacle removing device comprises a drill rod and a cutter head, specifically, the diameter of the drill rod is 0.8-1.2 m, the drill rod is small in diameter, a surrounding soil body does not need to be reinforced when drilling is conducted, any new obstacle is not added or remained in the soil body after construction, further, the cutter head comprises a common cutter head and a special cutter head, the common cutter head is conventional in cutting capacity and can cut concrete and stone and general rock stratum in a short time, the special cutter head is strong in cutting capacity and can cut obstacles containing steel bars, such as steel pipe columns, underground continuous walls and bolt-type steel, the first obstacle removing device further comprises a power device, and the power device drives the first obstacle removing device to conduct long-distance horizontal drilling.
Fig. 3 is a cross-sectional view illustrating a construction for removing an underground obstacle according to an embodiment of the present invention. As shown in fig. 3, in the underground construction, an immovable structure 21 and an underground obstacle diaphragm wall 26 are encountered, in one embodiment, three diaphragm walls 26 are removed, soil 22 exists between the walls, and the area where the wall to be removed is located is the area where the obstacle to be removed is located, for example, the obstacle (in one embodiment, the wall 21) includes, but is not limited to, a diaphragm cage, a section steel column, a C50 reinforced concrete segment, and a high-strength bolt between segments. When the obstacles cannot be vertically cleared, the pipe curtain support 25 (as shown in fig. 2) can be arranged in the working well 27 in a circle outside the obstacle removing range 2m, meanwhile, before the obstacles are removed, the first obstacle clearing device 23 is required to be arranged at the side wall of the working well corresponding to the area where the obstacles are to be cleared, the power device of the first obstacle clearing device 23 horizontally clamps the drill rod with the first section of cutter head to drive the first obstacle clearing device to carry out 360-degree rotary drilling, and the obstacles are broken while the waste residues are cleared. Specifically, first clearance barrier equipment uses ordinary tool bit earlier to drill, works as ordinary tool bit meets during the barrier that contains the reinforcing bar class, in first clearance barrier equipment returns the work well, with ordinary tool bit change for special tool bit, use special tool bit to abolish the building that contains the reinforcing bar class after, in first clearance barrier equipment returns the work well, with special tool bit change for ordinary tool bit.
Specifically, with continued reference to fig. 5-12, the drilling process includes:
the first obstacle removing device firstly uses the common cutter head 231 to drill a hole, and the common cutter head 231 mainly removes obstacles with smaller hardness, such as soil bodies. When the ordinary tool bit 231 of first obstacles removing equipment secretly digs to first ground even wall 261, first obstacles removing equipment withdraws in the working well, changes ordinary tool bit 231 for special tool bit 232, then first obstacles removing equipment uses special tool bit 232 to cut first ground even wall 261 under power equipment's drive.
After the first underground wall 261 is broken, the first obstacle removing device returns to the working well, the special tool bit 232 is replaced by the common tool bit 231, and the first obstacle removing device continues drilling by using the common tool bit 231.
When the ordinary tool bit 231 of the first obstacle removing device is dug to the second underground diaphragm wall 262, the first obstacle removing device returns to the working well, and the ordinary tool bit 231 is replaced by the special tool bit 232. First clearance barrier equipment uses special tool bit 232 to cut the second way diaphragm wall 262 under power equipment's drive, and the second way diaphragm wall 262 breaks the back of accomplishing, first clearance barrier equipment returns in the working well, changes special tool bit 232 into ordinary tool bit 231.
And so on, until the third underground diaphragm wall 263 is broken to form a drill hole, step S3 is performed, and the drill hole is filled with the filler 24, specifically with a special quick-setting material, typically concrete with an added quick-setting agent.
Next, step S4 is performed, and the above process of forming the bore hole and injecting the filler into the bore hole is repeated until the obstacle is cleared to the set standard. Further, when the drill holes are repeatedly formed, the drill holes are drilled from bottom to top in the range of the obstacles to be cleared, the buildings containing the steel bars are cleared hole by hole, and the drill holes formed by the first obstacle clearing equipment at each time are overlapped.
Specifically, the number of the drill holes is determined according to the shape and the size of the barrier to be cleared, and all the drill holes are filled with special quick-setting substances to prevent the collapse of a construction area.
Referring to fig. 13 for step S5, the tunnel 29 is formed by cutting the area of the space surrounded by all the drilled holes with the second obstacle removing apparatus.
Further, the second obstacle removing device is a shield machine and comprises a drill rod, a cutter head and power equipment, the diameter range of the drill rod is 3-16m and is larger than that of the first obstacle removing device, the second obstacle removing device 28 starts from a working well 27 in the figure, an area 24 of a space surrounded by all drill holes is broken, obstacles are removed, and a tunnel is formed. Removing the tube sheet support after forming the tunnel.
In summary, the method for clearing underground obstacles provided by the invention comprises the following steps: cutting obstacles along a first direction in a working well and removing waste residues to form a drilled hole, wherein an included angle is formed between the first direction and the height direction of the working well; injecting a filler into the borehole; repeating the processes of forming the drill hole and injecting the filler into the drill hole until the obstacles are removed to a set standard; and cutting the area of the space surrounded by all the drill holes to form the tunnel. The method provided by the invention can be used for drilling in the horizontal direction under the ground, and can effectively remove underground obstacles under the conditions that the ground space is narrow, the surrounding environment is complex, other immovable structures are arranged above the obstacles, the environmental influence is small, and the working efficiency is high.
Furthermore, in the invention, the number of the drill holes of the first obstacle removing equipment is determined according to the shape and the size of the obstacle to be removed, the obstacle removing equipment can be in porous lap joint, the obstacle removing range is flexible, waste residues are removed while the obstacle is removed, meanwhile, because the size of the first obstacle removing equipment is small, the surrounding soil body does not need to be reinforced when the obstacle removing equipment works, and any new obstacle is not added or remained in the soil body after construction. Furthermore, only one starting working well is needed by using the first obstacle clearing equipment, compared with a scheme which generally needs two working wells, one working well is saved, and the manufacturing cost can be saved by millions.
The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any way. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (14)

1. A method of removing an underground obstruction comprising the steps of,
forming a working well, wherein the area to be cleared of the obstacles is positioned at the side wall of the working well;
closely arranging steel pipes underground around the area of the barrier to be removed and mutually meshing the steel pipes to form a steel pipe curtain for supporting the area of the barrier to be removed;
cutting obstacles in a working well along a first direction and removing waste residues to form a drilled hole, wherein an included angle is formed between the first direction and the height direction of the working well; the method comprises the steps that a first obstacle removing device is adopted for drilling, the first obstacle removing device comprises a cutter head, the cutter head comprises a common cutter head and a special cutter head, the common cutter head is used for cutting concrete and stones and cutting general rock stratums in a short time, and the special cutter head is used for cutting steel pipe columns, underground continuous walls and bolt-type steel included by obstacles;
injecting a filler into the borehole;
repeating the processes of forming the drill hole and injecting the filler into the drill hole until the obstacles are removed to a set standard; and
and cutting the area of the space surrounded by all the drill holes to form the tunnel.
2. A method of clearing a subterranean obstruction as claimed in claim 1, wherein the first direction is a horizontal direction and the working well height direction is a vertical direction.
3. A method of removing an underground obstacle according to claim 1, wherein a working well is formed at one side of the area where the obstacle is to be removed.
4. A method of removing an underground obstacle according to claim 1, wherein the boreholes are drilled sequentially from bottom to top within the area of the obstacle to be removed as the boreholes are repeatedly formed.
5. A method of removing an underground obstruction as claimed in claim 1 wherein the boreholes formed each time overlap.
6. A method of clearing an underground obstruction as claimed in claim 1 wherein the obstruction comprises at least one of a floor reinforcement cage, a section steel column, a C50 reinforced concrete segment and a high strength bolt between segments.
7. A method of clearing an underground obstacle according to claim 1, wherein the first clearing apparatus further comprises a drill pipe, the drill pipe having a diameter in the range of 0.8 to 1.2 m.
8. A method of clearing a subterranean obstruction as in claim 7, wherein the step of forming a bore hole comprises:
the first obstacle removing device firstly uses a common cutter head to drill a hole;
when the common cutter head meets the obstacle, the common cutter head is replaced by the special cutter head;
breaking the barrier by using the special cutter head;
and replacing the special cutter head with the common cutter head, and continuously drilling.
9. A method of clearing an underground obstacle according to claim 8, wherein when the ordinary cutter head encounters the obstacle, the first obstacle clearing device is retracted into the work well to replace the ordinary cutter head with the special cutter head.
10. A method of clearing an underground obstacle according to claim 8, wherein after the special bit has broken the obstacle, the first obstacle removing device is retracted into the well to replace the special bit with the normal bit.
11. A method of removing an underground obstacle according to claim 1, characterised in that the tunnel is formed by cutting the area of space surrounded by all the boreholes with a second obstacle removing device.
12. A method of clearing an underground obstruction as claimed in claim 11 wherein the second obstacle clearance device is a shield tunneling machine.
13. A method of clearing underground obstacles according to claim 12, wherein the second obstacle-clearing apparatus cuts the area of space surrounded by all the boreholes from the work well, forming a tunnel.
14. A method of clearing a subterranean obstruction as claimed in claim 1, wherein the filler is a quick setting.
CN201810517352.2A 2018-05-25 2018-05-25 Method for removing underground obstacle Active CN108756896B (en)

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Application Number Priority Date Filing Date Title
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CN108756896B true CN108756896B (en) 2020-12-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111005379A (en) * 2019-12-02 2020-04-14 中建八局轨道交通建设有限公司 Construction method for removing pile body of reinforced concrete cast-in-place pile

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RU2043501C1 (en) * 1992-07-10 1995-09-10 Виктор Георгиевич Череменский Method for driving tunnels in unstable water-saturated rocks
CN101638891A (en) * 2009-08-18 2010-02-03 上海市第二建筑有限公司 Construction method of all casing precessing isolation pile
CN102654056A (en) * 2012-05-08 2012-09-05 上海市基础工程有限公司 Shield construction method for clearing obstacles by punching rock stratum section
CN103306608A (en) * 2012-03-13 2013-09-18 深圳市工勘岩土工程有限公司 Drill bit and drilling equipment
CN103953358A (en) * 2014-04-21 2014-07-30 江苏鼎达建筑新技术有限公司 Clearing construction method for underground obstacle
CN104500075A (en) * 2014-11-19 2015-04-08 江苏鼎达建筑新技术有限公司 Construction method of cutting underground obstacle with wire saw
CN106761792A (en) * 2017-01-20 2017-05-31 武汉市市政建设集团有限公司 A kind of full-sleeve full-rotation drill sleeve and shield cutter preceding object thing sweep-out method

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2043501C1 (en) * 1992-07-10 1995-09-10 Виктор Георгиевич Череменский Method for driving tunnels in unstable water-saturated rocks
CN101638891A (en) * 2009-08-18 2010-02-03 上海市第二建筑有限公司 Construction method of all casing precessing isolation pile
CN103306608A (en) * 2012-03-13 2013-09-18 深圳市工勘岩土工程有限公司 Drill bit and drilling equipment
CN102654056A (en) * 2012-05-08 2012-09-05 上海市基础工程有限公司 Shield construction method for clearing obstacles by punching rock stratum section
CN103953358A (en) * 2014-04-21 2014-07-30 江苏鼎达建筑新技术有限公司 Clearing construction method for underground obstacle
CN104500075A (en) * 2014-11-19 2015-04-08 江苏鼎达建筑新技术有限公司 Construction method of cutting underground obstacle with wire saw
CN106761792A (en) * 2017-01-20 2017-05-31 武汉市市政建设集团有限公司 A kind of full-sleeve full-rotation drill sleeve and shield cutter preceding object thing sweep-out method

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