CN110607798B - Underground factory building drainage corridor suitable for TBM construction - Google Patents
Underground factory building drainage corridor suitable for TBM construction Download PDFInfo
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- CN110607798B CN110607798B CN201910958396.3A CN201910958396A CN110607798B CN 110607798 B CN110607798 B CN 110607798B CN 201910958396 A CN201910958396 A CN 201910958396A CN 110607798 B CN110607798 B CN 110607798B
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- drainage
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 238000009412 basement excavation Methods 0.000 claims abstract description 11
- 239000010410 layer Substances 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000011229 interlayer Substances 0.000 claims 1
- 239000003673 groundwater Substances 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 208000022971 Tuberculous meningitis Diseases 0.000 description 17
- 208000001223 meningeal tuberculosis Diseases 0.000 description 17
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 238000005422 blasting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001363 water suppression through gradient tailored excitation Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
Abstract
The invention discloses an underground plant drainage gallery suitable for TBM construction. The distance between the two adjacent layers of drainage galleries is 30-40 m. The drainage gallery is formed by adopting a TBM excavation construction mode, the diameter is not smaller than 2.5m, and the length of the drainage gallery, the longitudinal slope and the radius of the circular arc corner part are determined according to the drainage requirement and the working requirement of the TBM. The structure has better stress condition, is suitable for a TBM long-distance and quick excavation mode, reduces the safety risk of manual excavation, improves the construction quality and speed, is beneficial to reducing the groundwater around the hydropower station underground powerhouse as early as possible and as soon as possible, and is beneficial to the construction safety of the hydropower station underground powerhouse.
Description
Technical Field
The invention relates to a drainage gallery of a hydraulic building, in particular to a drainage gallery of an underground factory building suitable for TBM construction.
Background
In the design of the underground powerhouse of the hydropower station, in order to reduce the underground water line, improve the structural stability of the underground powerhouse, meet the operation requirements of electric and instrument equipment of the power station, a drainage gallery is usually arranged in the peripheral area of the underground powerhouse so as to reduce the underground water line of the underground powerhouse of the hydropower station. The drainage corridor of the underground factory building is arranged into 2-3 layers according to the elevation according to the channel arrangement conditions in the construction period and the operation period of the hydropower station, the single-layer drainage corridor is similar to a round rectangle, and the maximum single-layer length is not more than 1.2km; the section of each layer of drainage gallery is generally in the shape of a gate, the section size is 4 multiplied by 3 (width multiplied by height), the construction is usually carried out by adopting a drilling and blasting method, the construction operation environment is poor, and the construction efficiency is low. With the development of TBM equipment and the maturation of TBM construction technology in recent years, the traditional independent layered drainage gallery is not suitable for the long-distance continuous excavation characteristic of TBM in structural arrangement.
Disclosure of Invention
The invention aims to solve the technical problem of providing the underground workshop drainage gallery which can accelerate the construction progress of the underground workshop drainage gallery and is suitable for TBM construction.
In order to solve the technical problems, the invention adopts the following technical scheme: the periphery of the underground workshop is provided with a spiral drainage gallery, the section of the drainage gallery is circular, and deep drainage holes are arranged between two adjacent layers of drainage galleries to form a drainage curtain.
The distance between the two adjacent layers of drainage galleries is 30-40 m.
The drainage gallery starts from a traffic tunnel and ends in a water collecting well of a tail water accident gate chamber.
The drainage gallery is formed by adopting a TBM excavation construction mode, the diameter is not smaller than 2.5m, and the length of the drainage gallery, the longitudinal slope and the radius of the circular arc corner part are determined according to the drainage requirement and the working requirement of the TBM.
And a deep drainage hole is drilled downwards at the vertical central line of the upper drainage gallery, the upper drainage gallery and the lower drainage gallery are communicated, and a closed drainage curtain taking the drainage gallery as a main catchment channel and taking the deep drainage hole between the drainage galleries as a secondary drainage channel is formed.
The included angle between the deep drainage holes and the central line of the drainage gallery is 0-10 degrees, the aperture is 70-90 mm, and the interval is 3-4 m.
And a drainage ditch is arranged on the inner bottom surface of the drainage gallery.
The beneficial effects of the invention are as follows: the method is suitable for the requirements of TBM excavation construction, and the structural stress condition is good. The application range is wide, the construction speed is high, the construction safety is high, and the method has the characteristics of high efficiency and safety for reducing the groundwater level around the hydropower station underground plant (comprising a main transformer chamber and a tail gate chamber).
Drawings
FIG. 1 is a schematic diagram of an underground plant drainage gallery suitable for TBM construction of the present invention.
FIG. 2 is a typical cross-sectional view of the drain gallery of the present invention.
FIG. 3 is a typical cross-sectional view of a drain gallery and deep drain hole of the present invention.
Detailed Description
The invention is described in further detail below with reference to the attached drawings and detailed description:
as shown in figures 1-3, the drainage gallery of the underground plant suitable for TBM construction is provided with spiral drainage galleries 1 around the underground plant, the cross section of the drainage gallery 1 is circular, and deep drainage holes 2 are distributed between two adjacent layers of drainage galleries to form a drainage curtain 3.
The distance between the two adjacent layers of drainage galleries is 30-40 m. The drainage gallery 1 starts from a traffic tunnel 4 and ends in a water collection well 5 of a tail water accident gate chamber. The drainage gallery 1 is formed by adopting a TBM excavation construction mode, the diameter is not smaller than 2.5m, and the length, the longitudinal slope and the radius of the circular arc corner parts of the drainage gallery 1 are determined according to the drainage requirement and the working requirement of the TBM.
And a deep drainage hole 2 is drilled downwards at the vertical central line of the upper drainage gallery, the upper drainage gallery and the lower drainage gallery are communicated, a closed drainage curtain 3 taking the drainage gallery as a main catchment channel and the deep drainage hole between the drainage galleries as a secondary drainage channel is formed. The included angle between the deep drainage holes and the central line of the drainage gallery is 0-10 degrees, the aperture is 70-90 mm, and the interval is 3-4 m.
The drainage gallery 1 is provided with a drainage ditch 6 on the inner bottom surface.
Specifically, according to the ground water seepage field law and the arrangement condition of the construction channels of the underground plant (comprising a main transformer chamber and a tail gate chamber), the drainage gallery is arranged in the region of the underground plant (comprising the main transformer chamber and the tail gate chamber) with abundant ground water. And (3) combining the TBM excavation construction requirement, arranging the drainage gallery structure into a spiral shape, wherein the section of the drainage gallery structure is circular. The drainage gallery structure is formed by adopting a TBM excavation construction mode, the diameter is not smaller than 2.5m (generally 3.5 m), and the radius of the arc-shaped corner part and the longitudinal slope of the drainage gallery can be determined according to the arrangement of an underground factory building and the working performance requirement of the TBM. And after the excavation construction of the drainage gallery is completed, deep drainage holes are drilled among the drainage gallery layers to form a drainage curtain. The deep drain holes are converged to a drain gallery, and after the drain gallery converges water to a tail water gate chamber ponding well, ponding in the ponding well is pumped and discharged to a tail water system, so that the groundwater level of the surrounding area of an underground factory building (comprising a main transformer chamber and a tail gate chamber) is reduced.
The invention relates to a novel drainage gallery structure of an underground plant (comprising a main transformer chamber and a tail gate chamber) of a hydropower station, which is particularly suitable for underground plants rich in underground water and auxiliary chamber engineering thereof. The invention designs the drainage corridor of the peripheral area of the underground powerhouse of the hydropower station into an integral continuous spiral structure, and realizes the integrated design of the drainage corridor of the underground powerhouse on the basis of fully meeting the TBM construction. The drainage curtain is arranged at a proper position among the drainage galleries, and finally an underground drainage system mainly comprising the drainage galleries is formed in the surrounding area of the underground factory building. According to the ground water seepage field law and the arrangement condition of the running channels of the underground plant, the position of the drainage gallery selected in the underground plant area rich in ground water and close to the construction channel is determined, so that the effect that the drainage gallery reduces the ground water level is exerted, and the safety and stability of the underground plant are ensured.
The above-described embodiments are only for illustrating the technical spirit and features of the present invention, and it is intended to enable those skilled in the art to understand the content of the present invention and to implement it accordingly, and the scope of the present invention is not limited to the embodiments, i.e. equivalent changes or modifications to the spirit of the present invention are still within the scope of the present invention.
Claims (5)
1. The utility model provides a secret factory building drainage corridor suitable for TBM construction, its characterized in that, secret factory building periphery sets up spiral drainage corridor (1), and drainage corridor (1) cross section is circular, lays deep wash port (2) between in the adjacent two-layer drainage corridor and forms drainage curtain (3), drainage corridor (1) starts in traffic hole (4), terminates in sump pit (5) of tail water accident gate room, beats deep wash port (2) downwards in upper drainage corridor vertical central line department, communicates upper and lower floor drainage corridor, forms and uses drainage corridor as main catchment passageway, and drainage corridor interlayer deep wash port is the sealed drainage curtain (3) of secondary drainage passageway.
2. The underground powerhouse drainage gallery suitable for TBM construction of claim 1, wherein the distance between the adjacent two layers of drainage galleries is 30-40 m.
3. The underground plant drainage gallery suitable for TBM construction according to claim 1, wherein the drainage gallery (1) is formed by adopting a TBM excavation construction mode, the diameter is not smaller than 2.5m, and the length, longitudinal slope and circular arc corner radius of the drainage gallery (1) are determined according to the drainage requirement and the working requirement of the TBM.
4. The underground powerhouse drainage gallery suitable for TBM construction of claim 1, wherein the deep drainage holes between layers form an included angle of 0-10 degrees with the central line of the drainage gallery, the aperture is 70-90 mm, and the interval is 3-4 m.
5. Underground plant drainage corridor suitable for TBM construction according to claim 1, characterized in that the inner bottom surface of the drainage corridor (1) is provided with a drainage ditch (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958396.3A CN110607798B (en) | 2019-10-10 | 2019-10-10 | Underground factory building drainage corridor suitable for TBM construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910958396.3A CN110607798B (en) | 2019-10-10 | 2019-10-10 | Underground factory building drainage corridor suitable for TBM construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110607798A CN110607798A (en) | 2019-12-24 |
| CN110607798B true CN110607798B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910958396.3A Active CN110607798B (en) | 2019-10-10 | 2019-10-10 | Underground factory building drainage corridor suitable for TBM construction |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112195883B (en) * | 2020-07-02 | 2022-03-18 | 中国电建集团华东勘测设计研究院有限公司 | Arrangement structure and construction method of pressure pipeline and drainage gallery suitable for TBM construction |
| CN113051644B (en) * | 2021-03-18 | 2023-10-31 | 国网新源控股有限公司 | Hydropower station diversion inclined shaft excavation diameter determining method suitable for TBM construction |
| CN114991282A (en) * | 2022-07-05 | 2022-09-02 | 中国电建集团华东勘测设计研究院有限公司 | Underground factory building spiral drainage gallery excavation arrangement form and excavation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1479772A (en) * | 1974-07-09 | 1977-07-13 | Ohbayashi Corp | Drainage sheet material |
| JP2002106300A (en) * | 2000-09-29 | 2002-04-10 | Eng Shinko Kyokai | Structure of underground cavity |
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| CN203320494U (en) * | 2013-07-01 | 2013-12-04 | 中国水电顾问集团中南勘测设计研究院 | High dam spillway foundation drainage system |
| CN204370390U (en) * | 2014-12-26 | 2015-06-03 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of phreatic high pressure pipeline drainage system structure |
| CN106168142A (en) * | 2016-08-24 | 2016-11-30 | 中国神华能源股份有限公司 | The water discharge method of tunnel bedrock underground water |
| CN110284470A (en) * | 2019-06-11 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | A kind of hydropower station pressure pipeline collector drain structure |
| CN210917430U (en) * | 2019-10-10 | 2020-07-03 | 中国电建集团北京勘测设计研究院有限公司 | Underground factory building drainage corridor suitable for TMB construction |
-
2019
- 2019-10-10 CN CN201910958396.3A patent/CN110607798B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1479772A (en) * | 1974-07-09 | 1977-07-13 | Ohbayashi Corp | Drainage sheet material |
| JP2002106300A (en) * | 2000-09-29 | 2002-04-10 | Eng Shinko Kyokai | Structure of underground cavity |
| KR20040043696A (en) * | 2002-11-19 | 2004-05-24 | 민병이 | Road culvert drainage pipe |
| CN101446107A (en) * | 2008-12-31 | 2009-06-03 | 中国水电顾问集团华东勘测设计研究院 | Layered drainage structure of underground powerhouse chamber of hydropower station in water-rich region and construction method thereof |
| KR20090026320A (en) * | 2009-01-23 | 2009-03-12 | 김영욱 | Deformation-compatible vertical drain and construction method thereof |
| CN202510125U (en) * | 2012-02-15 | 2012-10-31 | 中国水电顾问集团华东勘测设计研究院 | Butterfly underground engineering access tunnel |
| CN102979531A (en) * | 2012-12-13 | 2013-03-20 | 中国水电顾问集团成都勘测设计研究院 | Construction method and structure for reinforcing large rock slope deep weak structural plane |
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| CN110284470A (en) * | 2019-06-11 | 2019-09-27 | 中国电建集团北京勘测设计研究院有限公司 | A kind of hydropower station pressure pipeline collector drain structure |
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