CN112302688B - End plugging device suitable for back grouting of fabricated tunnel supporting structure and construction method thereof - Google Patents
End plugging device suitable for back grouting of fabricated tunnel supporting structure and construction method thereof Download PDFInfo
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- CN112302688B CN112302688B CN202011212997.9A CN202011212997A CN112302688B CN 112302688 B CN112302688 B CN 112302688B CN 202011212997 A CN202011212997 A CN 202011212997A CN 112302688 B CN112302688 B CN 112302688B
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- 238000010276 construction Methods 0.000 title claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 69
- 238000002347 injection Methods 0.000 claims abstract description 40
- 239000007924 injection Substances 0.000 claims abstract description 40
- 239000011435 rock Substances 0.000 claims abstract description 29
- 239000002689 soil Substances 0.000 claims abstract description 21
- 239000002002 slurry Substances 0.000 claims abstract description 12
- 238000009412 basement excavation Methods 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 17
- 230000002265 prevention Effects 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 239000004567 concrete Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 2
- 239000007788 liquid Substances 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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 OR ROCK 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses an end plugging device suitable for back grouting of an assembled tunnel supporting structure and a construction method thereof, wherein a main pipeline is adhered with a thick cushion at one side contacted with a rock-soil layer, and water injection ports are arranged at intervals of two meters along the length direction of the main pipeline; if the section of the assembled support pipe piece is open, the main pipeline is arc-shaped and is matched with the assembled support pipe piece, and the pin is in a closed form and is wrapped by the soft cushion; if the section of the spliced supporting structure is closed, the main pipeline forms a closed ring shape according to the shape of the section of the spliced supporting segment, and the soft cushion is annularly wrapped outside the pipeline; the gap between the spliced support pipe piece and the rock and soil layer is plugged by means of water injection pressure in the main pipeline, so that grouting body is filled compactly, and slurry leakage is prevented. The grouting device is simple and convenient to operate, high in reliability, green and environment-friendly, grouting leakage caused by over-and-under excavation is avoided, the integrity of a grouting layer can be ensured, and the construction quality of the grouting layer is effectively ensured.
Description
Technical Field
The invention relates to the field of tunnel support, in particular to an end plugging device suitable for back grouting of an assembled tunnel support structure and a construction method thereof.
Background
When the assembled supporting structure is applied to the field of tunnel supporting, grouting is needed behind the supporting structure wall, so that the supporting structure and the rock mass are well combined to improve the stress performance. The tunnel construction is generally a construction mode of excavating one section and supporting and assembling one section, grouting is needed immediately after assembling is finished, and the next section is excavated after a supporting system is formed; in the grouting process, the end part of the cross section of the support pipe piece and the surface of the rock mass cannot be well sealed due to the fact that the surface of the rock mass is uneven, a certain structural measure is needed to be adopted for sealing the end part of the cross section of the support pipe piece, a sealed space is formed between the back of the wall of the support pipe piece and the rock mass, grouting is conducted inwards through grouting holes reserved in the support pipe piece, and grouting quantity and grouting pressure are monitored to ensure grouting compactness.
The existing support segment end slurry leakage prevention plugging measure is generally a sponge filling plugging or a plugging formed by injecting double slurry into a segment end wall back gap (a shield tunnel segment wall back grouting construction method 201810060111. X).
The prior technical proposal has the following defects:
1. The pure use of sponge is insufficient in blocking compactness, deformation and damage are easy to occur under the extrusion of grouting body, and the sponge is a disposable blocking material, so that the waste of building materials is caused.
2. The grouting range and the grouting amount of the dual-liquid grouting plug are difficult to control, the dual-liquid grouting is a permanent type plug, the strength of the dual-liquid grouting plug is different from that of the grouting body, and the integrity of the grouting body can be influenced by the dual-liquid grouting plug in the middle of the grouting body.
Disclosure of Invention
The invention aims to provide an end plugging device suitable for back grouting of an assembled tunnel supporting structure and a construction method thereof, so as to solve the problems in the prior art.
The end plugging device suitable for back grouting of an assembled tunnel supporting structure comprises a main pipeline, wherein the cross section of the main pipeline is a diversified special-shaped pipeline, and the pipe diameter of the main pipeline is determined according to the width of a gap behind an actual working condition wall;
the main pipeline is annularly arranged at the rear end part of the supporting structure wall;
A soft cushion with a thick layer is adhered to one side of the main pipeline, which is contacted with the rock soil layer, so that a small gap between the upper part of the main pipeline and the rock soil layer caused by over-excavation is filled;
Along the length direction of the main pipeline, arranging a water injection port every two meters, wherein the water injection port is arranged on the outer side of the pipe wall of the main pipeline in a through length manner, the specific number of the water injection ports is determined according to the length of the pipeline, and each water injection port is provided with a ball valve for water injection and drainage;
If the section of the assembled support pipe piece is open, the main pipeline is arc-shaped and is matched with the assembled support pipe piece, and the pins are in a closed form and are wrapped by the soft cushion;
If the section of the spliced supporting structure is closed, the main pipeline forms a closed ring shape according to the shape of the section of the spliced supporting segment, and the soft cushion is annularly wrapped outside the pipeline;
A grouting port is arranged on the spliced supporting tube piece;
The lower part of the main pipeline is tightly attached to the surface of the assembled supporting segment by means of water injection pressure in the main pipeline, and a soft cushion at the upper part of the main pipeline is extruded to fill up small gaps between the upper part of the main pipeline and a rock-soil layer; the friction force among the assembled support segments, the main pipeline and the rock soil layer is utilized to enable the main pipeline to be plugged in the gap between the assembled support segments and the rock soil layer, so that the grouting layer behind the wall is filled compactly, and slurry leakage is prevented.
The end plugging device suitable for back grouting of an assembled tunnel supporting structure is characterized in that the cross section form of the main pipeline comprises a circular cross section, a rectangular cross section, a trapezoid cross section, a hexagonal cross section or other special-shaped cross sections; the section shape takes the main pipeline which can form good contact with the surface of the assembled support segment as a selection standard;
when the spliced supporting tube sheets are in a flat plate shape, rectangular sections, trapezoidal sections and hexagonal sections are selected, and the plugging friction force is increased through the special section form;
When the spliced supporting tube sheets are corrugated, a circular section is selected to be suitable;
when the spliced supporting tube sheets are in other shapes, the proper section form of the main pipeline is selected according to the actual working condition.
The end plugging device suitable for back grouting of the fabricated tunnel supporting structure has the preferable scheme that the section height of the main pipeline depends on the gap width between the assembled supporting segment and the rock and soil layer, and the gap average width is generally equal to the gap average width.
The end plugging device suitable for back grouting of the fabricated tunnel supporting structure is characterized in that the main pipeline is made of rubber or other materials with good ductility; and a multi-layered main body pipe having different materials on the surface and inside can be used.
The end plugging device suitable for back grouting of the assembled tunnel supporting structure is characterized in that the soft cushion is made of rubber sponge or other materials with good elasticity.
The end plugging device suitable for back grouting of the fabricated tunnel supporting structure has the preferable scheme that water injected from the water injection port can be replaced by other flowing bodies, such as oil, composite slurry and foaming materials.
The end plugging device suitable for back grouting of the fabricated tunnel supporting structure is characterized in that a ball valve arranged on the water filling port can be replaced by a water stop valve in other forms, or water filling pressure gauge detection equipment is additionally arranged to control the pressure in the pipe.
An end plugging device suitable for back grouting of an assembled tunnel supporting structure and a construction method thereof are provided, wherein the construction steps are as follows:
1) After the support pipe piece is assembled, the main pipeline is annularly placed at the rear end part of the pipe piece wall, one side with a soft cushion is arranged on the upper side, and one side with a water injection port is arranged outside, and a pipe piece transverse connecting bolt hole is reserved for transverse placement depth, so that the excavation assembling work of the next stage is not influenced after grouting is finished;
2) After the step 1) is finished, water can be injected through the reserved water injection port, after the water pipe is filled, the water pipe is tightly embedded between the rock stratum and the supporting structure through manual observation, and when the water pipe is difficult to transversely move due to friction force of rubber materials, the water injection can be stopped, and the ball valve can be closed;
3) Because the main pipeline and the soft cushion have good ductility, the main pipeline after water injection is tightly plugged in a gap between the supporting structure and the rock stratum, a closed space is formed between the supporting segment wall and the rock stratum at the moment, grouting can be performed through a grouting opening reserved by the supporting segment, and grouting effect can be monitored through grouting quantity and grouting pressure;
4) After grouting is completed and grouting concrete reaches initial setting, opening a ball valve to drain water in a main pipeline, and removing the main pipeline from the segment wall, wherein the main construction of the tunnel supporting structure at the stage is completed, and the post-grouting layer of the wall at the stage and the post-grouting layer of the wall at the previous stage are combined into a whole, so that the tunnel excavation and supporting work at the next stage can be performed;
5) Checking whether the main pipeline has damage conditions such as broken holes, overlarge local deformation, water leakage of a water injection port and the like, and if all the main equipment has normal performance, repeatedly utilizing the main pipeline in the slurry leakage prevention plugging work of the next stage.
Compared with the prior art, the invention has the beneficial effects that:
1. The plugging device is assembled temporary plugging, and is disassembled after the construction of the grouting layer is completed, and the grouting work in the next stage directly takes the end face of the grouting layer in the stage as an initial grouting face, so that the integrity of the grouting layer is ensured;
2. The invention is convenient to disassemble and assemble, the required working surface is small, and the construction can be completed without special professional equipment;
3. because of the cross section shape of the main pipeline, after the plugging is carried out by using the invention, the end surface of the grouting layer is arc-shaped or abnormal, which is favorable for good combination with the grouting layer in the next stage to a certain extent;
4. The material used by the invention has the characteristics of green and environment-friendly, and the main equipment can be reused, thereby conforming to the strategy of sustainable development.
Drawings
FIG. 1 is an elevational view of a head closure device suitable for use with a semi-circular open section support structure;
FIG. 2 is an elevational view of an end closure device suitable for use with a circular closed section support structure;
FIG. 3 is a cross-sectional view of a main conduit in four different cross-sectional forms;
FIG. 4 is a transverse elevation of the end closure device under actual conditions;
FIG. 5 is a longitudinal cross-sectional view of the end closure device under actual conditions;
Fig. 6 is a detailed view of a node at the site of the end closure device of fig. 5.
In the figure: 1. main body pipeline, 2, water filling port, 3, cushion, 4, assemble support segment, 5, rock soil layer, 6, ball valve, 7, slip casting mouth, 8, last stage wall post grouting layer.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The end plugging device suitable for back grouting of an assembled tunnel supporting structure as shown in figures 1-6 comprises a main pipeline 1, wherein the cross section of the main pipeline 1 is a diversified special-shaped pipeline, and the pipe diameter of the main pipeline 1 is determined according to the width of a gap behind an actual working condition wall;
The main pipeline 1 is annularly arranged at the rear end part of the supporting structure wall;
a soft cushion 3 with a thick layer is adhered to one side of the main pipeline 1, which is contacted with the rock soil layer 5, so as to fill a small gap between the upper part of the main pipeline 1 and the rock soil layer 5 caused by over-excavation;
Along the length direction of the main pipeline 1, a water injection port 2 is arranged every two meters, the water injection port 2 is arranged on the outer side of the pipe wall of the main pipeline 1 in a through length mode, the specific number of the water injection ports 2 is determined according to the length of the pipeline, and each water injection port 2 is provided with a ball valve 6 for water injection and drainage;
if the section of the assembled support tube sheet 4 is open, the main pipeline 1 is arc-shaped and is matched with the assembled support tube sheet 4, and the pins are in a closed form and are wrapped by the soft cushion 3;
if the section of the spliced supporting structure is closed, the main pipeline 1 forms a closed ring shape according to the shape of the section of the spliced supporting segment 4, and the soft cushion 3 is wrapped outside the pipeline in a ring direction;
The spliced supporting tube sheets are provided with grouting openings 7;
The lower part of the main pipeline 1 is tightly attached to the surface of the spliced supporting tube piece 4 by means of water injection pressure in the main pipeline 1, and the soft cushion 3 at the upper part of the main pipeline 1 is extruded to fill up a small gap between the upper part of the main pipeline 1 and the rock-soil layer 5; the friction force among the assembled support pipe piece 4, the main pipeline 1 and the rock soil layer 5 is utilized to enable the main pipeline 1 to be blocked in a gap between the assembled support pipe piece 4 and the rock soil layer 5, so that the grouting layer behind the wall is filled compactly, and slurry leakage is prevented.
The cross section form of the main pipeline 1 comprises a circular cross section, a rectangular cross section, a trapezoid cross section, a hexagonal cross section or other abnormal cross sections; the section shape takes the main pipeline which can form good contact with the surface of the spliced supporting tube piece 4 as a selection standard;
When the spliced supporting tube sheet 4 is in a flat plate shape, a rectangular section, a trapezoid section and a hexagonal section are selected, and the plugging friction force is increased through the special section form;
When the spliced supporting tube sheet 4 is corrugated, a circular section is selected to be suitable;
when the spliced supporting tube sheet 4 is in other shapes, a proper main pipeline section form is selected according to the actual working condition.
The section height of the main pipeline 1 depends on the gap width between the assembled support pipe piece and the rock-soil layer, and is generally equal to the average gap width.
The main pipeline 1 is made of rubber or other materials with good ductility; and a multi-layered main body pipe having different materials on the surface and inside can be used.
The soft pad 3 is made of rubber sponge or other materials with good elasticity.
The water injected by the water injection port 2 can be replaced by other fluid, such as oil, composite slurry, foaming material.
The ball valve arranged on the water injection port 2 can be replaced by a water stop valve in other forms, or water injection pressure gauge detection equipment is additionally arranged to control the pressure in the pipe.
A construction method of an end plugging device suitable for back grouting of an assembled tunnel supporting structure comprises the following construction steps:
1) After the assembly of the support pipe piece is completed, the main pipeline 1 is placed at the rear end part of the pipe piece wall in a circumferential direction, the side with the soft cushion 3 is arranged on the upper side, the side with the water injection port is arranged on the outside, and the transverse placing depth is required to be reserved with a pipe piece transverse connecting bolt hole so as to ensure that the excavation assembly work of the next stage is not influenced after the grouting is completed;
2) After the step 1) is finished, water can be injected through the reserved water injection port 2, after the water pipe is filled, the water pipe is tightly embedded between the rock stratum and the supporting structure through manual observation, and when the water pipe is difficult to transversely move due to friction force of rubber materials, the water injection can be stopped, and the ball valve 6 is closed;
3) Because the main pipeline 1 and the soft cushion 3 have good ductility, the main pipeline 1 after water injection is tightly plugged in a gap between the supporting structure and the rock stratum, a closed space is formed between the supporting segment wall and the rock stratum at the moment, grouting can be performed through a grouting opening 7 reserved by the supporting segment, and grouting effect can be monitored through grouting quantity and grouting pressure;
4) After grouting is completed and grouting concrete reaches initial setting, opening a ball valve 6 to drain water in the main pipeline, and removing the main pipeline 1 from the back of the pipe piece wall, wherein the main construction of the tunnel supporting structure at the stage is completed, and the post-grouting layer of the wall of the stage and the post-grouting layer 8 of the wall of the previous stage are combined into a whole, so that the tunnel excavation and supporting work at the next stage can be performed;
5) Checking whether the main pipeline 1 has damage conditions such as broken holes, overlarge local deformation, water leakage of the water injection port 2 and the like, and if all the main equipment has normal performance, repeatedly utilizing the main pipeline to perform slurry leakage prevention plugging work in the next stage.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof.
Claims (6)
1. Be suitable for end plugging device of assembled tunnel supporting construction back slip casting, its characterized in that: the device comprises a main pipeline, wherein the cross section of the main pipeline is a diversified special-shaped pipeline, and the pipe diameter of the main pipeline is determined according to the width of a gap behind a wall under actual working conditions;
the main pipeline is annularly arranged at the rear end part of the supporting structure wall;
A soft cushion with a thick layer is adhered to one side of the main pipeline, which is contacted with the rock soil layer, so that a small gap between the upper part of the main pipeline and the rock soil layer caused by over-excavation is filled;
Along the length direction of the main pipeline, arranging a water injection port every two meters, wherein the water injection port is arranged on the outer side of the pipe wall of the main pipeline in a through length manner, the specific number of the water injection ports is determined according to the length of the pipeline, and each water injection port is provided with a ball valve for water injection and drainage;
if the section of the assembled support pipe piece is open, the main pipeline is arc-shaped and is matched with the assembled support pipe piece, and the pin is in a closed form and is wrapped by the soft cushion;
If the section of the spliced supporting structure is closed, the main pipeline forms a closed ring shape according to the shape of the section of the spliced supporting segment, and the soft cushion is annularly wrapped outside the pipeline;
A grouting port is arranged on the spliced supporting tube piece;
The lower part of the main pipeline is tightly attached to the surface of the assembled supporting segment by means of water injection pressure in the main pipeline, and a soft cushion at the upper part of the main pipeline is extruded to fill up small gaps between the upper part of the main pipeline and a rock-soil layer; the friction force among the assembled support segments, the main pipeline and the rock soil layer is utilized to enable the main pipeline to be blocked in gaps between the assembled support segments and the rock soil layer, so that the grouting layer behind the wall is filled compactly, and slurry leakage is prevented;
The cross section form of the main body pipeline comprises a circular cross section, a rectangular cross section, a trapezoid cross section, a hexagonal cross section or other abnormal cross sections; the section shape takes the main pipeline which can form good contact with the surface of the assembled support segment as a selection standard;
when the spliced supporting tube sheets are in a flat plate shape, rectangular sections, trapezoidal sections and hexagonal sections are selected, and the plugging friction force is increased through the special section form;
When the spliced supporting tube sheets are corrugated, a circular section is selected to be suitable;
when the spliced supporting tube sheets are in other shapes, selecting a proper main pipeline section form according to actual working conditions;
The section height of the main pipeline depends on the width of a gap between the spliced support pipe piece and the rock and soil layer, and the section height is equal to the average width of the gap.
2. The end plugging device suitable for back grouting of an assembled tunnel supporting structure according to claim 1, wherein: the main pipeline is made of rubber or other materials with good ductility; and a multi-layer main pipeline with different materials on the surface and the inside is adopted.
3. The end plugging device suitable for back grouting of an assembled tunnel supporting structure according to claim 1, wherein: the soft cushion is made of rubber sponge or other materials with good elasticity.
4. The end plugging device suitable for back grouting of an assembled tunnel supporting structure according to claim 1, wherein: the water injected by the water injection port adopts other flowing bodies, and the other flowing bodies are oil, composite slurry and foaming materials.
5. The end plugging device suitable for back grouting of an assembled tunnel supporting structure according to claim 1, wherein: the ball valve arranged on the water filling port can be replaced by a water stop valve in other forms, or water filling pressure gauge detection equipment is additionally arranged to control the pressure in the pipe.
6. The construction method of the end plugging device suitable for back grouting of the fabricated tunnel supporting structure according to any one of claims 1 to 5, comprising the following construction steps:
1) After the support pipe piece is assembled, the main pipeline is annularly placed at the rear end part of the pipe piece wall, one side with a soft cushion is arranged on the upper side, and one side with a water injection port is arranged outside, and a pipe piece transverse connecting bolt hole is reserved for transverse placement depth, so that the excavation assembling work of the next stage is not influenced after grouting is finished;
2) After the step 1) is finished, namely water is injected through a reserved water injection port, after a water pipe is filled, the water pipe is tightly embedded between a rock stratum and a supporting structure through manual observation, and when the water pipe is difficult to transversely move due to friction force of rubber materials, the water injection is stopped and the ball valve is closed;
3) Because the main pipeline and the soft cushion have good ductility, the main pipeline after water injection is tightly plugged in a gap between the supporting structure and the rock stratum, a closed space is formed between the supporting segment wall and the rock stratum at the moment, grouting is performed through a grouting opening reserved by the supporting segment, and grouting effect is monitored through grouting quantity and grouting pressure;
4) After grouting is completed and grouting concrete reaches initial setting, opening a ball valve to drain water in a main pipeline, and removing the main pipeline from the segment wall, wherein the main construction of the tunnel supporting structure at the stage is completed, and the post-grouting layer of the wall at the stage and the post-grouting layer of the wall at the previous stage are combined into a whole, so that the tunnel excavation and supporting work at the next stage can be performed;
5) Checking whether the main pipeline has broken holes, overlarge local deformation and water leakage at a water injection port or not, and if all the main equipment has normal performance, repeatedly using the main pipeline for the slurry leakage prevention plugging work at the next stage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011212997.9A CN112302688B (en) | 2020-11-04 | 2020-11-04 | End plugging device suitable for back grouting of fabricated tunnel supporting structure and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011212997.9A CN112302688B (en) | 2020-11-04 | 2020-11-04 | End plugging device suitable for back grouting of fabricated tunnel supporting structure and construction method thereof |
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| CN112302688B true CN112302688B (en) | 2024-06-18 |
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| CN213597981U (en) * | 2020-11-04 | 2021-07-02 | 沈阳建筑大学 | Be suitable for end plugging device of assembled tunnel supporting construction back slip casting |
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| KR101407965B1 (en) * | 2013-09-16 | 2014-06-17 | 주식회사 성우사면 | Reinforced Upper Tunnel Using Pre-support Structure and its Construction Method |
| KR102077325B1 (en) * | 2017-10-12 | 2020-02-13 | 리컨텍 주식회사 | Caulking unit with quick attachment for tube assembly for tunnel grouting and tunnel supporting method of using thereof |
| CN108643935A (en) * | 2018-04-27 | 2018-10-12 | 中铁六局集团天津铁路建设有限公司 | The construction method in tunnel under rich water shallow embedding geology |
| CN110821518A (en) * | 2019-12-10 | 2020-02-21 | 中铁十九局集团轨道交通工程有限公司 | Grouting plugging waterproof shield segment structure and construction method thereof |
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