CN112814684A - Cast-in-place and prefabricated assembly combined tunnel shaft inner wall structure and construction method - Google Patents
Cast-in-place and prefabricated assembly combined tunnel shaft inner wall structure and construction method Download PDFInfo
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- CN112814684A CN112814684A CN202110187033.1A CN202110187033A CN112814684A CN 112814684 A CN112814684 A CN 112814684A CN 202110187033 A CN202110187033 A CN 202110187033A CN 112814684 A CN112814684 A CN 112814684A
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 239000002356 single layer Substances 0.000 claims abstract description 38
- 229910000831 Steel Inorganic materials 0.000 claims description 43
- 239000010959 steel Substances 0.000 claims description 43
- 239000011435 rock Substances 0.000 claims description 20
- 239000010410 layer Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 230000002787 reinforcement Effects 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims 2
- 238000009412 basement excavation Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000004567 concrete Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/04—Lining shafts; Linings therefor with brick, concrete, stone, or similar building materials
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D5/00—Lining shafts; Linings therefor
- E21D5/06—Lining shafts; Linings therefor with iron or steel
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D7/00—Shaft equipment, e.g. timbering within the shaft
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention belongs to the field of underground engineering, and particularly relates to a tunnel shaft inner wall structure combining cast-in-place and prefabricated assembly and a construction method thereof, wherein the tunnel shaft inner wall structure comprises a single-layer mold lining and a prefabricated assembly type shaft inner wall, and the single-layer mold lining and the prefabricated assembly type shaft inner wall are both cylindrical; and the single-layer molded lining and the inner wall of the prefabricated assembled shaft are connected up and down. The structure can adapt to different stratums, improves the construction efficiency, realizes the quick support of the well wall, effectively shortens the construction period, improves the mechanical construction degree, and ensures the safety of constructors.
Description
Technical Field
The invention belongs to the field of underground engineering, and particularly relates to a tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly and a construction method.
Background
With the rapid development of the infrastructure of China, some experience has been accumulated in the construction of tunnels in areas with complex geological conditions of high mountains and high mountains, however, for the excavation of long and large deep vertical shafts, most construction methods still refer to the excavation mode of coal mines, the well wall adopts a composite lining, and the primary support adopts a steel arch frame and a spray anchoring net structure. The existing deep shaft excavation method commonly used in China is a long-section one-way operation method, and the method has the advantages of long construction period, low efficiency and high manufacturing cost. The method has the advantages of few working procedures, no initial anchor-shotcrete support, one-step well construction and great shortening of the construction period. However, for the excavation of a large-section deep shaft in a region with complex geological conditions, if only a short-section lining digging mode is adopted to construct the inner wall of the shaft, when the self-stability is poor, the stress release is fast, and a rock stratum is broken, particularly for a stratum rich in underground water, the stability and the safety of a rock wall during the process of constructing the lining are difficult to ensure, and the molding quality of the cast concrete is difficult to ensure.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly and a construction method. The structural form of the inner wall of the vertical shaft is selected according to different stratum conditions, so that the construction period can be shortened, the manufacturing cost can be reduced, and the rock wall exposure time under severe geological conditions can be shortened, thereby ensuring the stability of the vertical shaft and the safety of operators.
The technical scheme of the invention is as follows: a tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly comprises a single-layer molded lining and a prefabricated assembly type vertical shaft inner wall, wherein the single-layer molded lining and the prefabricated assembly type vertical shaft inner wall are both cylindrical; and the single-layer molded lining is connected with the inner wall of the prefabricated assembled shaft.
The single-layer mold building lining is used for shaft support of a relatively stable ground area of a shaft; the prefabricated vertical shaft inner wall is used for vertical shaft support of a rock stratum breaking or fracture zone area of the vertical shaft.
The end face that the individual layer mould built lining assembled shaft inner wall be connected evenly distribute a plurality of connecting reinforcement, the end face that prefabricated assembled shaft inner wall and individual layer mould built lining are connected evenly distributes a plurality of reinforcing bar holes, individual layer mould built lining is pegged graft in the reinforcing bar hole through the connecting reinforcement and is connected together with prefabricated assembled shaft inner wall fixed.
An annular water stop strip is arranged between the single-layer mold-built lining and the inner wall of the prefabricated assembled shaft, and the cross section of the water stop strip is L-shaped.
The inner wall of the prefabricated vertical shaft is of a cylindrical structure surrounded by a plurality of arc-shaped pipe pieces; and the pipe piece is provided with a positioning hole, and the inner wall of the prefabricated vertical shaft penetrates through the positioning hole through a positioning steel pipe to be fixed on the vertical shaft.
The arc-shaped pipe pieces are connected into a whole through a plurality of connecting bolts.
A hand hole is arranged at the edge of the surface of the inner wall of each segment, and a bolt hole communicated with the hand hole is correspondingly arranged in the inner wall at the edge; the connecting bolt penetrates through the bolt holes of two adjacent segments, and two ends of the connecting bolt are fixed in the hand holes of the two adjacent segments; the number of the hand holes and the bolt holes corresponds to the number of the connecting bolts.
And a rubber sealing gasket is arranged at the caulking joint between two adjacent pipe pieces.
The surface of the inner wall of each segment is also provided with a grouting hole, and the positioning steel pipe is a steel perforated pipe; and (4) grouting the wall of the inner wall of the prefabricated assembled shaft through the grouting holes and the positioning steel pipes to form a wall grouting layer.
A construction method of a tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly comprises the following steps:
step 1) adopting a single-layer mold building lining to form a vertical shaft support in a relatively stable ground layer area of a vertical shaft; connecting steel bars are reserved on the end face of the single-layer molded lining connected with the inner wall of the fabricated shaft;
step 2) connecting a plurality of arc-shaped pipe pieces into a cylindrical structure through connecting bolts, namely the inner wall of the assembled shaft, wherein the cylindrical structure is formed by connecting a plurality of pipe pieces into a one-ring or multi-ring structure; reserving a reinforcing steel bar hole on the inner wall of the assembled vertical shaft;
step 3) inserting the reserved connecting steel bars of the single-layer molded lining in the step 1) into the reserved steel bar holes of the inner wall of the fabricated shaft to fix the single-layer molded lining and the inner wall of the fabricated shaft together, wherein the inner wall of the fabricated shaft is positioned in a rock stratum crushing or fracture zone area of the shaft and is used for shaft support of the area;
step 4), fixing the inner wall of the assembled vertical shaft on the vertical shaft through a positioning steel pipe;
and 5) grouting holes are formed in the inner wall of the assembled shaft, the positioning steel pipes are steel perforated pipes, and after the inner wall of the assembled shaft is installed on the inner wall of the shaft, grouting is timely performed on the wall through the grouting holes and the positioning steel pipes to form a wall grouting layer, so that the effects of sealing surrounding rock cracks, reinforcing surrounding rocks and stopping water are achieved.
The invention has the beneficial effects that: the invention provides a tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly, when the ground floor condition is good, an integral type mold concrete lining can be adopted, the construction progress is accelerated, and the manufacturing cost is saved; when stratum conditions are relatively poor, the prefabricated assembled segment lining structure type can be adopted, quick support is realized, strong support is provided in time, and the stability of a well wall is ensured.
This structure has the following advantages: 1) the construction mode of the inner wall of the vertical shaft is selected according to different stratum conditions, so that the construction period can be shortened to a certain extent, and the cost is reduced; 2) the prefabricated vertical shaft inner wall is adopted in the rock stratum crushing or breaking section, so that the exposure time of the vertical shaft rock stratum is greatly reduced, the risk coefficient of pit wall collapse and water inrush is reduced, and the safety of constructors is guaranteed; 3) and the inner wall of the prefabricated vertical shaft is adopted, so that the construction mechanization degree is improved, and unnecessary labor force is reduced.
Drawings
The following is a further description of the practice of the invention with reference to the accompanying drawings, but the invention is not limited thereto.
Fig. 1 is a sectional view of the inner wall structure of the tunnel shaft of the present invention;
fig. 2 is a schematic cross-sectional view of an inner wall of a prefabricated shaft;
FIG. 3 is a partial enlarged view of FIG. 2A;
fig. 4 is a schematic front view of the inner wall of the prefabricated assembled shaft;
1. a relatively stable formation; 2. a formation fracture or fracture zone; 3. building a lining by a single-layer mold; 4. quick-setting rubber waterproof material; 5. a water stop bar; 6. prefabricating the inner wall of the assembled shaft; 7. positioning the steel pipe; 8. a connecting bolt; 9. grouting a layer behind the wall; 10. reinforcing steel bar holes; 11. caulking; 12. a rubber gasket; 13. hand hole; 14. bolt holes; 15. positioning holes; 16. and (4) grouting holes.
Detailed Description
Example 1
As shown in fig. 1, the tunnel shaft inner wall structure combining cast-in-place and prefabricated assembly comprises a single-layer molded lining 3 and a prefabricated assembled shaft inner wall 6, wherein the single-layer molded lining 3 and the prefabricated assembled shaft inner wall 6 are both cylindrical; the single-layer molded lining 3 is connected with the inner wall 6 of the prefabricated vertical shaft up and down.
Further, in a formation zone with good stability, namely: in the relatively stable stratum 1 area of the shaft, the inner wall support of the shaft adopts the integral structure form of the single-layer molded lining 3; in the sections with poor self-stability such as broken rock zones or fractured zones, namely: in the area of the rock stratum crushing or fracture zone 2, the inner wall support of the vertical shaft adopts the structure form of the prefabricated vertical shaft inner wall 6.
Further, as shown in fig. 2, a plurality of connecting steel bars are uniformly distributed on the connecting end surface of the single-layer modular lining 3, a plurality of steel bar holes 10 are uniformly distributed on the connecting end surface of the prefabricated assembly type shaft inner wall 6, and the single-layer modular lining 3 is fixedly connected with the prefabricated assembly type shaft inner wall 6 by inserting the connecting steel bars into the steel bar holes 10, so that the connectivity and integrity of the prefabricated assembly type shaft inner wall 6 and the single-layer modular lining 3 are improved. The connecting reinforcing steel bars and the reinforcing steel bar holes are reserved in advance.
Further, as shown in fig. 1, an annular water stop strip 5 is arranged between the single-layer molded lining 3 and the prefabricated assembled shaft inner wall 6, the cross section of the water stop strip 5 is in an L shape and is mainly used for water plugging, and a quick-setting rubber waterproof material 4 is filled in a joint to improve the waterproof sealing effect.
Example 2
On the basis of the embodiment 1, as shown in fig. 1 and 4, further, the prefabricated assembled shaft inner wall 6 is a cylindrical structure surrounded by a plurality of arc-shaped pipe segments; the duct piece is provided with a positioning hole 15, and the prefabricated assembly type shaft inner wall 6 penetrates through the positioning hole 15 through a positioning steel pipe 7 to be fixed on the rock wall of the shaft. The positioning steel pipe 7 is anchored in the rock wall before the prefabricated vertical shaft inner wall 6 is installed, then the prefabricated vertical shaft inner wall 6 is hoisted in place, and the other end of the positioning steel pipe 7 penetrates through the positioning hole 15 in the prefabricated vertical shaft inner wall to realize positioning of the prefabricated vertical shaft inner wall 6. The positioning steel pipe 7 mainly plays a role in positioning and supporting the duct piece of the prefabricated assembly type shaft inner wall 6 stably.
Furthermore, the arc-shaped pipe pieces are connected into a whole through a plurality of connecting bolts 8.
Further, as shown in fig. 3 and 4, a hand hole 13 is arranged at the edge of the inner wall surface of each segment, and a bolt hole 14 communicated with the hand hole 13 is correspondingly arranged in the inner wall at the edge; the connecting bolts 8 pass through the bolt holes 14 of two adjacent segments and are fixed at both ends in the hand holes 13 of the two adjacent segments. The number of hand holes 13 and bolt holes 14 corresponds to the number of attachment bolts 8. Wherein the diameter of the connecting bolt 8 is smaller than the bolt hole diameter;
further, a rubber sealing gasket 12 is arranged at a caulking joint 11 between two adjacent pipe pieces, and the effect of buffering and sealing is achieved.
Furthermore, the inner wall surface of each segment is also provided with a grouting hole 16, and the positioning steel pipe 7 is a steel flower pipe; and (3) performing the backfill grouting on the inner wall 6 of the prefabricated assembled shaft through the grouting holes 16 and the positioning steel pipes 7 to form a backfill grouting layer 9.
Example 3
On the basis of embodiment 2, the construction method of the tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly comprises the following steps:
step 1) adopting a single-layer mold building lining 3 to form a shaft support in a relatively stable stratum 1 area of a shaft; connecting steel bars are reserved on the end face of the single-layer molded lining 3 connected with the inner wall 6 of the fabricated shaft; in the embodiment, connecting steel bars are reserved on the lower end face of a single-layer molded lining 3;
step 2) connecting a plurality of arc-shaped pipe pieces into a cylindrical structure through connecting bolts 8, namely an assembled shaft inner wall 6, wherein the cylindrical structure is formed by connecting a plurality of pipe pieces into a one-ring or multi-ring structure; reserving a reinforcing steel bar hole 10 on the inner wall 6 of the assembled vertical shaft;
step 3) inserting the reserved connecting steel bars of the single-layer molded lining 3 in the step 1) into the reserved steel bar holes 10 of the inner wall 6 of the fabricated shaft to fix the single-layer molded lining 3 and the inner wall 6 of the fabricated shaft together, wherein the inner wall 6 of the fabricated shaft is positioned in the region of the rock stratum broken or fractured zone 2 of the shaft and is used for shaft support of the region;
step 4), fixing the inner wall 6 of the assembled vertical shaft on the vertical shaft through a positioning steel pipe 7;
and 5) grouting holes 16 are formed in the inner wall 6 of the assembled shaft, the positioning steel pipes 7 are steel perforated pipes, and after the assembling shaft inner wall 6 is installed on the inner wall of the shaft, grouting is timely performed on the wall through the grouting holes 16 and the positioning steel pipes 7 to form a wall post-grouting layer 9, so that the effects of sealing surrounding rock cracks, reinforcing surrounding rocks and stopping water are achieved.
According to the invention, two structures, namely a single-layer mold building lining 3 and a prefabricated assembly type shaft inner wall 6 are adopted, the single-layer mold building is used in a geological section, and the pipe piece is used in a geological section, so that quick support is realized. The single-layer mold building lining 3 and the prefabricated assembled shaft inner wall 6 are arranged up and down according to actual conditions.
The cast-in-place and prefabricated assembly combined tunnel shaft inner wall structure can be flexibly applied to tunnel shafts built in regions with complicated geological conditions, and rings are quickly sealed in a broken, volatile and stable section, so that the construction period is shortened, the construction safety is guaranteed, and the construction cost can be reduced to a certain extent.
The components and structures of the present embodiments that are not described in detail are well known in the art and do not constitute essential structural elements or elements.
Claims (10)
1. The utility model provides a cast-in-place and prefabricated tunnel shaft inner wall structure who combines together which characterized in that: the prefabricated vertical shaft lining structure comprises a single-layer mold building lining (3) and a prefabricated assembly type vertical shaft inner wall (6), wherein the single-layer mold building lining (3) and the prefabricated assembly type vertical shaft inner wall (6) are both cylindrical; the single-layer mold building lining (3) is connected with the inner wall (6) of the prefabricated assembled shaft up and down.
2. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 1, wherein: the single-layer molded lining (3) is used for shaft support in a relatively stable stratum (1) area of the shaft; the prefabricated shaft inner wall (6) is used for shaft support in the region of a rock fracture or fracture zone (2) of the shaft.
3. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 1, wherein: the even cloth of terminal surface that is connected of individual layer mould building lining (3) and prefabricated assembled shaft inner wall (6) have a plurality of connecting reinforcement, the even cloth of terminal surface that prefabricated assembled shaft inner wall (6) and individual layer mould building lining (3) are connected has a plurality of reinforcing bar holes (10), individual layer mould building lining (3) are pegged graft in reinforcing bar hole (10) through connecting reinforcement and are in the same place with prefabricated assembled shaft inner wall (6) fixed connection.
4. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 1, wherein: an annular water stop bar (5) is arranged between the single-layer mold building lining (3) and the prefabricated assembly type vertical shaft inner wall (6), and the cross section of the water stop bar (5) is L-shaped.
5. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 1, wherein: the prefabricated vertical shaft inner wall (6) is a cylindrical structure surrounded by a plurality of arc-shaped pipe pieces; the pipe sheet is provided with a positioning hole (15), and the inner wall (6) of the prefabricated vertical shaft passes through the positioning hole (15) through a positioning steel pipe (7) to be fixed on the vertical shaft.
6. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 5, wherein: the arc-shaped pipe pieces are connected into a whole through a plurality of connecting bolts (8).
7. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 6, wherein: a hand hole (13) is arranged at the edge of the inner wall surface of each segment, and a bolt hole (14) communicated with the hand hole (13) is correspondingly arranged in the inner wall at the edge; the connecting bolt (8) passes through the bolt holes (14) of two adjacent segments, and the two ends of the connecting bolt are fixed in the hand holes (13) of the two adjacent segments; the number of the hand holes (13) and the bolt holes (14) corresponds to the number of the connecting bolts (8).
8. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 5, wherein: and a rubber sealing gasket (12) is arranged at a caulking joint (11) between two adjacent pipe pieces.
9. A cast-in-place and prefabricated assembled tunnel shaft inner wall structure as claimed in claim 5, wherein: the inner wall surface of each pipe piece is also provided with a grouting hole (16), and the positioning steel pipe (7) is a steel flower pipe; and (3) grouting the wall of the prefabricated assembled shaft inner wall (6) through the grouting holes (16) and the positioning steel pipes (7) to form a wall grouting layer (9).
10. A construction method of a tunnel vertical shaft inner wall structure combining cast-in-place and prefabricated assembly is characterized by comprising the following steps: the method comprises the following steps:
step 1) adopting a single-layer mold building lining (3) to form a shaft support in a relatively stable stratum (1) area of a shaft; connecting steel bars are reserved on the end face of the single-layer molded lining (3) connected with the inner wall (6) of the assembled shaft;
step 2) connecting a plurality of arc-shaped pipe pieces into a cylindrical structure through connecting bolts (8), namely the inner wall (6) of the assembled shaft, wherein the cylindrical structure is formed by connecting a plurality of pipe pieces into a ring or multi-ring structure; reserving reinforcing steel bar holes (10) on the inner wall (6) of the assembled vertical shaft;
step 3), inserting the reserved connecting steel bars of the single-layer molded lining (3) in the step 1) into reserved steel bar holes (10) of the inner wall (6) of the assembled shaft to fix the single-layer molded lining (3) and the inner wall (6) of the assembled shaft together, wherein the inner wall (6) of the assembled shaft is positioned in a rock stratum crushing or fracture zone (2) area of the shaft and is used for shaft support of the area;
step 4), fixing the inner wall (6) of the assembled vertical shaft on the vertical shaft through a positioning steel pipe (7);
and 5) grouting holes (16) are formed in the inner wall (6) of the assembled vertical shaft, the positioning steel pipes (7) are steel perforated pipes, and after the assembled vertical shaft inner wall (6) is installed on the inner wall of the vertical shaft in a ring mode, grouting is conducted on the wall through the grouting holes (16) and the positioning steel pipes (7) in time to form a wall grouting layer (9), so that the effects of closing surrounding rock cracks, reinforcing surrounding rocks and stopping water are achieved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110187033.1A CN112814684A (en) | 2021-02-18 | 2021-02-18 | Cast-in-place and prefabricated assembly combined tunnel shaft inner wall structure and construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110187033.1A CN112814684A (en) | 2021-02-18 | 2021-02-18 | Cast-in-place and prefabricated assembly combined tunnel shaft inner wall structure and construction method |
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| CN112814684A true CN112814684A (en) | 2021-05-18 |
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| CN202110187033.1A Pending CN112814684A (en) | 2021-02-18 | 2021-02-18 | Cast-in-place and prefabricated assembly combined tunnel shaft inner wall structure and construction method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0666079A (en) * | 1992-08-17 | 1994-03-08 | Shimizu Corp | Shaft excavating device and excavating method using the same |
| CN105862990A (en) * | 2016-03-24 | 2016-08-17 | 上海市机械施工集团有限公司 | Prefabricated assembly well wall structure and construction method thereof |
| CN108547635A (en) * | 2018-03-15 | 2018-09-18 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of pipe-plate lining replaces tunnel surrounding reinforcement means with combined bolting and shotcrete |
| CN110094206A (en) * | 2019-05-08 | 2019-08-06 | 南方电网调峰调频发电有限公司 | A kind of vertical shaft tunnel concrete liner structure and method |
| CN111101948A (en) * | 2020-01-14 | 2020-05-05 | 重庆市轨道交通设计研究院有限责任公司 | Rock stratum area assembled deep large circular vertical shaft structure and construction method |
| CN214787376U (en) * | 2021-02-18 | 2021-11-19 | 中交第二公路工程局有限公司 | Cast-in-place and prefabricated tunnel shaft inner wall structure that combines together |
-
2021
- 2021-02-18 CN CN202110187033.1A patent/CN112814684A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0666079A (en) * | 1992-08-17 | 1994-03-08 | Shimizu Corp | Shaft excavating device and excavating method using the same |
| CN105862990A (en) * | 2016-03-24 | 2016-08-17 | 上海市机械施工集团有限公司 | Prefabricated assembly well wall structure and construction method thereof |
| CN108547635A (en) * | 2018-03-15 | 2018-09-18 | 华能西藏雅鲁藏布江水电开发投资有限公司 | A kind of pipe-plate lining replaces tunnel surrounding reinforcement means with combined bolting and shotcrete |
| CN110094206A (en) * | 2019-05-08 | 2019-08-06 | 南方电网调峰调频发电有限公司 | A kind of vertical shaft tunnel concrete liner structure and method |
| CN111101948A (en) * | 2020-01-14 | 2020-05-05 | 重庆市轨道交通设计研究院有限责任公司 | Rock stratum area assembled deep large circular vertical shaft structure and construction method |
| CN214787376U (en) * | 2021-02-18 | 2021-11-19 | 中交第二公路工程局有限公司 | Cast-in-place and prefabricated tunnel shaft inner wall structure that combines together |
Non-Patent Citations (1)
| Title |
|---|
| S. FREY & P. SCHMAEH: "The role of mechanized shaft sinking in international tunnelling projects", TUNNELS AND UNDERGROUND CITIES, 31 December 2019 (2019-12-31), pages 2126 * |
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