CN113863953A - Subway tunnel segment reinforcing structure and rapid construction process - Google Patents
Subway tunnel segment reinforcing structure and rapid construction process Download PDFInfo
- Publication number
- CN113863953A CN113863953A CN202111173744.XA CN202111173744A CN113863953A CN 113863953 A CN113863953 A CN 113863953A CN 202111173744 A CN202111173744 A CN 202111173744A CN 113863953 A CN113863953 A CN 113863953A
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- Prior art keywords
- grouting
- subway tunnel
- tunnel segment
- strength
- reinforcing structure
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- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 50
- 238000010276 construction Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000008569 process Effects 0.000 title claims abstract description 14
- 239000011435 rock Substances 0.000 claims abstract description 12
- 238000007569 slipcasting Methods 0.000 claims description 31
- 239000000463 material Substances 0.000 claims description 27
- 230000002787 reinforcement Effects 0.000 claims description 22
- 229920002748 Basalt fiber Polymers 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 239000002002 slurry Substances 0.000 claims description 6
- 239000011440 grout Substances 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims 1
- 230000001070 adhesive effect Effects 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 230000008439 repair process Effects 0.000 description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004760 aramid Substances 0.000 description 3
- 229920006231 aramid fiber Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000012779 reinforcing material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
Abstract
The invention discloses a subway tunnel segment reinforcing structure and a rapid construction process, relates to the technical field of subway tunnel segment reinforcing and repairing, and solves the technical problems of high construction difficulty, long time consumption for reinforcing and repairing and high repairing cost existing in the conventional process of reinforcing and repairing a subway tunnel segment or surrounding rock; the subway tunnel segment reinforcing structure and the rapid construction process have the advantages of simple structure, short construction time and high reinforcing and repairing efficiency.
Description
Technical Field
The invention relates to the technical field of subway tunnel segment reinforcement repair, in particular to a subway tunnel segment reinforcement structure and the technical field of rapid construction technology.
Background
Along with the continuous development of urban infrastructure, underground space development scale enlarges gradually, and the subway tunnel construction industry develops rapidly, and the subway tunnel segment is the complete subway tunnel concrete inner bag of a ring that shield constructs the machine and excavates forward, later assembles with the segment that prefabricates.
In the subway tunnel engineering, the innermost barrier of the subway tunnel segment plays a role in supporting the tunnel and resisting the action of the cement-soil pressure, and the stability of the tunnel segment is concerned; however, after the subway tunnel segment is put into use for a period of time, the damage phenomena such as cracks, dropping, falling and the like may occur, and the damaged part or local subway tunnel segment needs to be repaired in time so as to ensure the normal operation of the subway transportation system.
Research shows that the problems of high construction difficulty, long time consumption and high repair cost of reinforcement repair generally exist in the prior art when the subway tunnel segment or surrounding rock is reinforced and repaired.
Disclosure of Invention
The invention aims to: in order to solve the technical problems, the invention provides a subway tunnel segment reinforcing structure and a rapid construction process.
The invention specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a subway tunnel section of jurisdiction reinforcement structure, including high strength hose, connection end, built-in tensile structure, slip casting end and connecting rod, the connecting rod is used for connecting two adjacent high strength hoses, form comparatively stable overall structure, built-in tensile structure sets up inside high strength hose, the end connection of high strength hose has the connection end, the one end and the connection end of slip casting end are connected, keep the slip casting pressure in the high strength hose, the reposition of redundant personnel port of slip casting shunt is connected to the other end of slip casting end.
Furthermore, at least 3 high-strength hoses are arranged, the bursting strength is not less than 15MPa, the elongation is not less than 2%, the high-strength hoses are easy to bend, and the flexibility coefficient is not less than 10, such as carbon fibers, aramid fibers, basalt fibers and the like.
Furthermore, the grouting flow divider is connected with a grout outlet of a grouting pump, and grouting grout is delivered into the reinforcing structure mounting unit by utilizing the runner.
Furthermore, the built-in tensile structure is any one of a chain, a steel wire rope, a short steel bar chain and basalt fiber, and the tensile strength of the built-in tensile structure is not less than 1000 MPa.
Furthermore, the grouting end is connected with the connecting end in a buckling and pressing mode or in a bonding mode.
Furthermore, each grouting end is provided with a grouting valve, and the grouting valves have a self-sealing function.
Furthermore, the connecting rod is made of rigid materials, and the tensile strength of the connecting rod is not less than 1000 MPa.
The invention also aims to provide a rapid construction process of the subway tunnel segment reinforcing structure, which comprises the following steps:
the method comprises the following steps that firstly, a built-in tensile structure is arranged inside a high-strength hose, the end part and a connecting end of the high-strength hose are connected, vacuumizing is performed to form a single reinforcing structure, and the single reinforcing structure is connected together through a connecting rod to form a reinforcing structure mounting unit;
step two, conveying bagged dry materials of the ultrahigh-performance filling materials, a stirrer, a grouting pump and a reinforcing structure mounting machine to a construction site of a subway tunnel segment or surrounding rocks together;
step three, slotting on the ballast bed, connecting the connecting end and the grouting end, placing the connecting end and the grouting end into the slot, fixing the grouting valve, spanning the obstacle in the pipe sheet by a reinforcing structure mounting machine at a position which is not less than 100mm above the ballast bed, and unfolding the reinforcing structure mounting unit obtained in the step one to achieve preliminary molding;
preparing the ultrahigh-performance filling material in a stirrer, connecting a discharge port of the stirrer with a material suction pipe of a grouting pump, connecting a grouting flow divider with a slurry discharge port of the grouting pump, preliminarily discharging slurry, and ensuring that gas in a flow distribution port of the grouting flow divider is discharged until the stable ultrahigh-performance filling material is discharged;
connecting a shunting port of the grouting diverter with the reinforcing structure mounting unit obtained in the first step by using a grouting end, then opening a valve, starting grouting until the high-strength hose is filled with the ultrahigh-performance filling material, and expanding the reinforcing structure mounting unit outwards along with the increase of the filling pressure in the high-strength hose to completely cling to and extrude a subway tunnel segment or surrounding rock to a designed grouting pressure value;
and step six, connecting the connecting rod with a subway tunnel segment anchor bolt or connecting rods of other mounting structures, pouring a super-high-performance filling material into the slotted area, removing a reinforcing structure mounting machine and a grouting diverter after curing, and completing the mounting of a subway tunnel segment reinforcing structure, wherein the steps are repeated until the mounting of subway tunnel segments or subway tunnel segment reinforcing structures in all areas of surrounding rocks is completed.
Furthermore, in the sixth step, the 2h hardening strength of the ultrahigh-performance reinforcing material is more than or equal to 20MPa, the 24h hardening strength is not less than 45MPa, the 28-day strength is not less than 120MPa, and the flexural strength is more than or equal to 20 MPa.
The invention has the following beneficial effects:
the invention relates to a subway tunnel segment reinforcing structure and a rapid construction process, which change the traditional repair process, adopt a high-strength hose, a connecting end, a built-in tensile structure, a grouting end and a connecting rod novel reinforcing structure installation unit in a new city, and inject an ultra-high performance filling material into the high-strength hose by using a grouting system, thereby realizing the reinforcing repair of subway tunnel segments or surrounding rocks.
Drawings
FIG. 1 is a schematic structural view of a reinforcing structure for a subway tunnel segment according to the present invention;
FIG. 2 is a schematic view of a rapid construction process of a subway tunnel segment reinforcement structure according to the present invention;
FIG. 3 is a schematic view of a subway tunnel segment reinforcement structure and a rapid construction process according to the present invention;
FIG. 4 is a schematic view of a subway tunnel segment reinforcement structure and a rapid construction process according to the present invention;
reference numerals: 10-high strength hose; 11-connecting the terminal; 12-grouting end heads; 13-a connecting rod; 14-grouting valves; 15-grouting diverter; 16-built-in tensile structure; 17-a reinforcing structure mounting unit; 18-reinforcing structure mounting machine.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1, the embodiment provides a subway tunnel segment reinforcement structure, including high strength hose 10, connection end 11, built-in tensile structure 16, slip casting end 12 and connecting rod 13, connecting rod 13 is used for connecting two adjacent high strength hose 10, form comparatively stable overall structure, built-in tensile structure 16 sets up inside high strength hose 10, the end connection of high strength hose 10 has connection end 11, the one end and the connection end 11 of slip casting end 12 are connected, keep the slip casting pressure in high strength hose 10, the reposition of redundant personnel port of slip casting shunt 15 is connected to the other end of slip casting end 12, the grout outlet of slip casting pump is connected to slip casting shunt 15, utilize the reposition of redundant personnel pipeline to send the slip casting thick liquid into reinforcement structure installation element in, every slip casting end 12 all is provided with slip casting valve 14, slip casting valve 14 has from the function of closing.
In the above, at least 3 high-strength hoses 10 are provided, the burst strength is not less than 15MPa, the elongation is not less than 2%, the high-strength hoses are easy to bend, and the flexibility coefficient is not less than 10, such as carbon fibers, aramid fibers, basalt fibers and the like; the built-in tensile structure 16 is any one of a chain, a steel wire rope, a short steel bar chain and basalt fiber, and the tensile strength of the built-in tensile structure 16 is not less than 1000 MPa; the grouting end 12 is connected with the connecting end 11 in a buckling and pressing manner; the connecting rod 13 is made of rigid materials, and the tensile strength of the connecting rod 13 is not less than 1000 MPa.
Example 2
As shown in fig. 1, the embodiment provides a subway tunnel segment reinforcement structure, including high strength hose 10, connection end 11, built-in tensile structure 16, slip casting end 12 and connecting rod 13, connecting rod 13 is used for connecting two adjacent high strength hose 10, form comparatively stable overall structure, built-in tensile structure 16 sets up inside high strength hose 10, the end connection of high strength hose 10 has connection end 11, the one end and the connection end 11 of slip casting end 12 are connected, keep the slip casting pressure in high strength hose 10, the reposition of redundant personnel port of slip casting shunt 15 is connected to the other end of slip casting end 12, the grout outlet of slip casting pump is connected to slip casting shunt 15, utilize the reposition of redundant personnel pipeline to send the slip casting thick liquid into reinforcement structure installation element in, every slip casting end 12 all is provided with slip casting valve 14, slip casting valve 14 has from the function of closing.
In the above, at least 3 high-strength hoses 10 are provided, the burst strength is not less than 15MPa, the elongation is not less than 2%, the high-strength hoses are easy to bend, and the flexibility coefficient is not less than 10, such as carbon fibers, aramid fibers, basalt fibers and the like; the built-in tensile structure 16 is any one of a chain, a steel wire rope, a short steel bar chain and basalt fiber, and the tensile strength of the built-in tensile structure 16 is not less than 1000 MPa; the grouting end 12 is connected with the connecting end 11 in a bonding way; the connecting rod 13 is made of rigid materials, and the tensile strength of the connecting rod 13 is not less than 1000 MPa.
Example 3
As shown in fig. 2 to 4, the present embodiment provides a rapid construction process of a subway tunnel segment reinforcement structure, including the following steps:
step one, placing a built-in tensile structure 16 inside a high-strength hose 10, connecting the end part of the high-strength hose 10 with a connecting end 11, vacuumizing to form a single reinforcing structure, and connecting the single reinforcing structures together through a connecting rod 13 to form a reinforcing structure mounting unit 17;
step two, conveying bagged dry materials of the ultra-high performance filling materials, a stirrer, a grouting pump and a reinforcing structure installing machine 18 to a construction site of a subway tunnel segment or surrounding rocks together;
step three, grooving in a ballast bed, connecting a connecting end 11 and a grouting end 12, placing the connecting end and the grouting end into the groove, fixing the grouting valve 14, spanning an obstacle in the pipe at a position which is not less than 100mm above the ballast bed through a reinforcing structure mounting machine 18, and unfolding the reinforcing structure mounting unit 17 obtained in the step one to achieve primary forming;
preparing an ultrahigh-performance filling material in a stirrer, connecting a discharge port of the stirrer with a material suction pipe of a grouting pump, connecting a grouting flow divider 15 with a slurry discharge port of the grouting pump, preliminarily discharging slurry, and ensuring that gas in a flow dividing port of the grouting flow divider 15 is discharged until the stable ultrahigh-performance filling material is discharged;
connecting a diversion port of the grouting diverter 15 with the reinforcing structure mounting unit 17 obtained in the first step by using the grouting end 12, then opening a valve, starting grouting until the high-strength hose 10 is filled with the ultrahigh-performance filling material, and expanding the reinforcing structure mounting unit 17 outwards along with the increase of the filling pressure in the high-strength hose 10 to completely cling and extrude a subway tunnel segment or surrounding rock to a designed grouting pressure value;
step six, connecting the connecting rod 13 with a connecting rod of a subway tunnel segment anchor bolt or other mounting structures, pouring a super-high-performance filling material into the slotted area, removing the reinforcing structure mounting machine 18 and the grouting diverter 15 after curing, completing the mounting of a subway tunnel segment reinforcing structure, and repeating the steps until the mounting of the subway tunnel segment reinforcing structures in all areas of the subway tunnel segments or surrounding rocks is completed.
In the sixth step, the 2h hardening strength of the ultrahigh-performance reinforcing material is more than or equal to 20MPa, the 24h hardening strength is not less than 45MPa, the 28-day strength is not less than 120MPa, and the flexural strength is more than or equal to 20 MPa.
Claims (9)
1. The utility model provides a subway tunnel section of jurisdiction reinforcement structure, its characterized in that, subway tunnel section of jurisdiction reinforcement structure includes high strength hose (10), connection end (11), built-in tensile structure (16), slip casting end (12) and connecting rod (13), connecting rod (13) are used for connecting adjacent two high strength hose (10), built-in tensile structure (16) set up inside high strength hose (10), the end connection of high strength hose (10) has connection end (11), the one end of slip casting end (12) with connection end (11) are connected, the reposition of redundant personnel port of slip casting shunt (15) is connected to the other end of slip casting end (12).
2. A subway tunnel segment reinforcement structure as claimed in claim 1, wherein said high-strength hose (10) is provided in at least 3.
3. A subway tunnel segment reinforcement structure as claimed in claim 1, wherein said grouting diverter (15) is connected to a grout outlet of a grouting pump.
4. A subway tunnel segment reinforcement structure as claimed in claim 1, wherein said built-in tensile structure (16) is any one of chain, wire rope, short steel bar chain, basalt fiber, and tensile strength of said built-in tensile structure (16) is not less than 1000 MPa.
5. A subway tunnel segment reinforcement structure as claimed in claim 1, wherein said grouting end (12) is in press-fit connection or adhesive connection with said connection end (11).
6. A subway tunnel segment reinforcement structure as claimed in claim 1, wherein each said grouting end (12) is provided with a grouting valve (14).
7. The subway tunnel segment reinforcing structure of claim 1, wherein said connecting rods (13) are made of rigid material, and the tensile strength of said connecting rods is not less than 1000 MPa.
8. The rapid construction process of a subway tunnel segment reinforcement structure as claimed in any one of claims 1 to 7, comprising the steps of:
step one, a built-in tensile structure (16) is placed inside a high-strength hose (10), the end part of the high-strength hose (10) is connected with a connecting end (11), vacuum pumping is performed to form a single reinforcing structure, and the single reinforcing structure is connected together through a connecting rod (13) to form a reinforcing structure mounting unit (17);
step two, conveying bagged dry materials of the ultra-high performance filling materials, a stirrer, a grouting pump and a reinforcing structure installing machine (18) to a construction site of a subway tunnel segment or surrounding rocks together;
step three, grooving in a ballast bed, connecting a connecting end (11) and a grouting end (12), placing the connecting end and the grouting end into the groove, fixing the grouting end, spanning an obstacle in the pipe at a position which is not less than 100mm above the ballast bed through a reinforcing structure mounting machine (18), and unfolding the reinforcing structure mounting unit (17) obtained in the step one to achieve primary forming;
preparing an ultrahigh-performance filling material in a stirrer, connecting a discharge port of the stirrer with a material suction pipe of a grouting pump, connecting a grouting flow divider (15) with a slurry discharge port of the grouting pump, preliminarily discharging slurry, and ensuring that gas in a flow dividing port of the grouting flow divider (15) is discharged until the stable ultrahigh-performance filling material is discharged;
connecting a flow dividing port of the grouting flow divider (15) with the reinforcing structure mounting unit (17) obtained in the first step by using a grouting end (12), then opening a valve, starting grouting until the high-strength hose (10) is filled with the ultrahigh-performance filling material, and expanding the reinforcing structure mounting unit (17) outwards along with the improvement of the filling pressure in the high-strength hose (10) to completely cling to and extrude a subway tunnel segment or surrounding rock to a designed grouting pressure value;
and step six, connecting the connecting rod (13) with a connecting rod of a subway tunnel segment anchor bolt or other mounting structures, pouring a super-high-performance filling material into the slotted area, removing a reinforcing structure mounting machine (18) and a grouting diverter (15) after curing, and completing the mounting of a subway tunnel segment reinforcing structure, wherein the steps are repeated until the mounting of the subway tunnel segment reinforcing structure of all areas of the subway tunnel segment or the surrounding rocks is completed.
9. The rapid construction process of a subway tunnel segment reinforcement structure as claimed in claim 8, wherein in step six, said ultra-high performance reinforcement material has a 2h hardening strength of not less than 20MPa, a 24h hardening strength of not less than 45MPa, a 28-day strength of not less than 120MPa, and a flexural strength of not less than 20 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173744.XA CN113863953A (en) | 2021-10-08 | 2021-10-08 | Subway tunnel segment reinforcing structure and rapid construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111173744.XA CN113863953A (en) | 2021-10-08 | 2021-10-08 | Subway tunnel segment reinforcing structure and rapid construction process |
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| Publication Number | Publication Date |
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| CN113863953A true CN113863953A (en) | 2021-12-31 |
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| CN202111173744.XA Pending CN113863953A (en) | 2021-10-08 | 2021-10-08 | Subway tunnel segment reinforcing structure and rapid construction process |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030011836A (en) * | 2000-05-01 | 2003-02-11 | 아시모리 공업 주식회사 | Duct repairing material, repairing structure, and repairing method |
| CN102979536A (en) * | 2012-12-11 | 2013-03-20 | 上海市基础工程有限公司 | Construction method for tunnel segment repair and reinforcement |
| CN105697032A (en) * | 2016-03-04 | 2016-06-22 | 李学彬 | Support method |
| CN208137953U (en) * | 2018-03-15 | 2018-11-23 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of quick slurry stop of double-shielded TBM |
| CN209324372U (en) * | 2018-12-24 | 2019-08-30 | 华北科技学院 | One kind being based on two-layer pipe underground filling type flexible support |
| CN110566233A (en) * | 2019-09-20 | 2019-12-13 | 成龙建设集团有限公司 | method for duct piece wall post-grouting in shield tunnel construction of full-section hard rock stratum |
| WO2020224233A1 (en) * | 2019-05-05 | 2020-11-12 | 济南轨道交通集团有限公司 | Construction method for shield tunnels passing underneath viaduct in multi-interval, small-clear-distance and overlapping manner |
| CN112195970A (en) * | 2020-10-20 | 2021-01-08 | 鲁亦楠 | River-crossing tunnel engineering waterproof construction method |
| CN113047810A (en) * | 2021-04-30 | 2021-06-29 | 成都和拓土木工程有限公司 | Multifunctional grouting nozzle |
-
2021
- 2021-10-08 CN CN202111173744.XA patent/CN113863953A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030011836A (en) * | 2000-05-01 | 2003-02-11 | 아시모리 공업 주식회사 | Duct repairing material, repairing structure, and repairing method |
| CN102979536A (en) * | 2012-12-11 | 2013-03-20 | 上海市基础工程有限公司 | Construction method for tunnel segment repair and reinforcement |
| CN105697032A (en) * | 2016-03-04 | 2016-06-22 | 李学彬 | Support method |
| CN208137953U (en) * | 2018-03-15 | 2018-11-23 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of quick slurry stop of double-shielded TBM |
| CN209324372U (en) * | 2018-12-24 | 2019-08-30 | 华北科技学院 | One kind being based on two-layer pipe underground filling type flexible support |
| WO2020224233A1 (en) * | 2019-05-05 | 2020-11-12 | 济南轨道交通集团有限公司 | Construction method for shield tunnels passing underneath viaduct in multi-interval, small-clear-distance and overlapping manner |
| CN110566233A (en) * | 2019-09-20 | 2019-12-13 | 成龙建设集团有限公司 | method for duct piece wall post-grouting in shield tunnel construction of full-section hard rock stratum |
| CN112195970A (en) * | 2020-10-20 | 2021-01-08 | 鲁亦楠 | River-crossing tunnel engineering waterproof construction method |
| CN113047810A (en) * | 2021-04-30 | 2021-06-29 | 成都和拓土木工程有限公司 | Multifunctional grouting nozzle |
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