CN110607798A - Underground factory building drainage corridor suitable for TMB construction - Google Patents
Underground factory building drainage corridor suitable for TMB construction Download PDFInfo
- Publication number
- CN110607798A CN110607798A CN201910958396.3A CN201910958396A CN110607798A CN 110607798 A CN110607798 A CN 110607798A CN 201910958396 A CN201910958396 A CN 201910958396A CN 110607798 A CN110607798 A CN 110607798A
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- 238000010276 construction Methods 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 21
- 238000009412 basement excavation Methods 0.000 claims abstract description 11
- 230000002349 favourable effect Effects 0.000 abstract 2
- 239000010410 layer Substances 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses an underground factory building drainage gallery suitable for TMB 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 less than 2.5m, and the length, the longitudinal slope and the radius of the arc-shaped corner part of the drainage gallery 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 favorable for reducing underground water around the underground powerhouse of the hydropower station as early as possible, and is favorable for the construction safety of the underground powerhouse of the hydropower station.
Description
Technical Field
The invention relates to a hydraulic construction drainage gallery, in particular to an underground workshop drainage gallery suitable for TMB 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 and meet the operation requirements of electric and 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. Generally, an underground powerhouse drainage gallery is arranged into 2-3 layers according to the elevation according to the channel setting conditions of a hydropower station in the construction period and the operation period, a single-layer drainage gallery is similar to a rounded rectangle, and the maximum length of the single layer is not more than 1.2 km; the section of each drainage gallery is generally in the shape of an urban portal, 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 maturity of TBM construction technology in recent years, the traditional independent layered drainage gallery is not suitable for the characteristic of continuous excavation of TBM long distance on the 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 TMB construction.
In order to solve the technical problems, the invention adopts the technical scheme that: the utility model provides an underground works drainage corridor suitable for TMB construction, underground works sets up spiral drainage corridor around, and the drainage corridor section is circular, lays deep drainage hole between the adjacent two-layer drainage corridor and forms the drainage curtain.
The distance between the two adjacent layers of drainage galleries is 30-40 m.
The drainage corridor starts from the traffic through hole and ends at the water collecting well of the tail water accident gate room.
The drainage gallery is formed by adopting a TBM excavation construction mode, the diameter is not less than 2.5m, and the length, the longitudinal slope and the radius of the arc-shaped corner part of the drainage gallery 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 center line of the upper drainage gallery, the upper drainage gallery and the lower drainage gallery are communicated to form a closed drainage curtain which takes the drainage gallery as a main water collecting channel and the deep drainage hole between the drainage gallery layers as a secondary drainage channel.
The included angle between the deep drain hole between the layers and the central line of the drainage gallery is 0-10 degrees, the aperture is 70-90 mm, and the distance is 3-4 m.
And a drainage ditch is arranged on the bottom surface of the interior of the drainage gallery.
The invention has the beneficial effects that: the requirement of TBM excavation construction is met, and the structure stress condition is good. The method has the advantages of wide application range, high construction speed and high construction safety, and has the characteristics of high efficiency and safety for reducing the underground water level around the underground powerhouse (comprising a main transformer chamber and a tail gate chamber) of the hydropower station.
Drawings
FIG. 1 is a schematic structural diagram of an underground powerhouse drainage corridor suitable for TMB construction.
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 the drain gallery and deep drain hole of the present invention.
Detailed Description
The invention is described in further detail below with reference to the following figures and detailed description:
as shown in figures 1-3, the drainage gallery of the underground workshop applicable to TMB construction is characterized in that a spiral drainage gallery 1 is arranged on the periphery of the underground workshop, the section of the drainage gallery 1 is circular, and deep drainage holes 2 are arranged 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 corridor 1 starts from a traffic opening 4 and ends in a sump 5 of the tailwater accident gate room. The drainage gallery 1 is formed by adopting a TBM excavation construction mode, the diameter is not less than 2.5m, and the length, the longitudinal slope and the radius of the arc-shaped corner part of the drainage gallery 1 are determined according to the drainage requirement and the working requirement of the TBM.
A deep drainage hole 2 is drilled downwards at the vertical center line of the upper drainage gallery, the upper and lower drainage galleries are communicated to form a closed drainage curtain 3 which takes the drainage gallery as a main water collecting channel and the deep drainage hole between the drainage gallery layers as a secondary drainage channel. The included angle between the deep drain hole between the layers and the central line of the drainage gallery is 0-10 degrees, the aperture is 70-90 mm, and the distance is 3-4 m.
A drainage ditch 6 is arranged on the bottom surface of the interior of the drainage gallery 1.
Specifically, the drainage corridor is determined to be arranged in the underground factory building (comprising a main transformer chamber and a tail gate chamber) with abundant underground water according to the underground water seepage field rule and the arrangement condition of the construction channel of the underground factory building (comprising the main transformer chamber and the tail gate chamber). And (3) arranging the drainage gallery structure into a spiral shape according to the requirements of TBM excavation construction, wherein the section of the drainage gallery structure is circular. The drainage gallery structure is formed by adopting a TBM (tunnel boring machine) excavation construction mode, the diameter of the drainage gallery structure is not less than 2.5m (generally 3.5m), and the radius of the circular arc-shaped corner part and the longitudinal slope of the drainage gallery structure can be determined according to the arrangement of underground powerhouses and the working performance requirement of the TBM. And after the excavation construction of the drainage gallery is completed, deep drainage holes are drilled between the drainage gallery layers to form a drainage curtain. The deep drainage holes converge to a drainage gallery, and the drainage gallery converges water to a tail gate chamber water collecting well, and then drains the water collected in the water collecting well to a tail water system, so as to reduce the underground water level of the surrounding area of the underground workshop (including the main transformer chamber and the tail gate chamber).
The invention relates to a novel drainage gallery structure of an underground powerhouse (comprising a main transformer chamber and a tail gate chamber) of a hydropower station, which is particularly suitable for underground powerhouses with abundant underground water and auxiliary cavern engineering thereof. The drainage gallery in the peripheral area of the underground powerhouse of the hydropower station is designed into an integrally continuous spiral structure, and the integrated design of the drainage gallery of the underground powerhouse is realized on the basis of fully meeting TBM construction. The drainage curtain is arranged at a proper position between the drainage gallery layers, and finally, an underground drainage system mainly comprising the drainage gallery is formed in the peripheral area of the underground plant. According to the underground water seepage field rule and the arrangement condition of the running channels of the underground powerhouse, the drainage gallery is determined to be selected in the underground powerhouse area with abundant underground water and close to the construction channel, so that the drainage gallery can be brought into play to reduce the underground water level, and the safety and stability of the underground powerhouse are ensured.
The above-mentioned embodiments are only for illustrating the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to carry out the same, and the present invention shall not be limited to the embodiments, i.e. the equivalent changes or modifications made within the spirit of the present invention shall fall within the scope of the present invention.
Claims (7)
1. The utility model provides an underground factory building drainage corridor suitable for TMB construction, its characterized in that, underground factory building periphery sets up spiral drainage corridor (1), and drainage corridor (1) section is circular, lays deep wash port (2) between adjacent two-layer drainage corridor and forms drainage curtain (3).
2. The underground powerhouse drainage corridor suitable for TMB construction according to claim 1, wherein the distance between two adjacent layers of drainage corridors is 30-40 m.
3. The underground powerhouse drainage corridor for TMB construction according to claim 1, characterized in that the drainage corridor (1) starts from the traffic opening (4) and ends in the water collection well (5) of the tailwater accident lock chamber.
4. The underground powerhouse drainage gallery suitable for TMB construction according to claim 1, wherein the drainage gallery (1) is formed by TBM excavation construction, the diameter is not less than 2.5m, and the length, the longitudinal slope and the radius of the arc-shaped corner part of the drainage gallery (1) are determined according to drainage requirements and the working requirements of the TBM.
5. The underground powerhouse drainage gallery suitable for TMB construction according to claim 1, wherein a deep drainage hole (2) is drilled downwards at the vertical center line of the upper drainage gallery to connect the upper and lower drainage galleries, so as to form a closed drainage curtain (3) with the drainage gallery as a main catchment passage and the deep drainage hole between the drainage gallery layers as a secondary drainage passage.
6. The underground factory building drainage corridor suitable for TMB construction of claim 5, wherein the deep drainage holes between the layers form an angle of 0-10 degrees with the central line of the drainage corridor, the hole diameter is 70-90 mm, and the distance is 3-4 m.
7. The underground powerhouse drainage corridor for TMB construction according to claim 1, characterized in that the drainage corridor (1) is provided with drainage gutters (6) on its inner bottom surface.
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 |
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| Publication Number | Publication Date |
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| CN110607798A true CN110607798A (en) | 2019-12-24 |
| CN110607798B CN110607798B (en) | 2024-03-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965822A (en) * | 2019-12-25 | 2020-04-07 | 中国电建集团北京勘测设计研究院有限公司 | Hydropower station underground powerhouse self-flowing drainage system |
| CN112195883A (en) * | 2020-07-02 | 2021-01-08 | 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 |
| CN113051644A (en) * | 2021-03-18 | 2021-06-29 | 国网新源控股有限公司 | Method for determining excavation diameter of hydropower station diversion inclined shaft 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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| JP2002106300A (en) * | 2000-09-29 | 2002-04-10 | Eng Shinko Kyokai | Structure of underground cavity |
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| 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 |
| 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 | High groundwater level 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 |
| 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 |
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| 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 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110965822A (en) * | 2019-12-25 | 2020-04-07 | 中国电建集团北京勘测设计研究院有限公司 | Hydropower station underground powerhouse self-flowing drainage system |
| CN112195883A (en) * | 2020-07-02 | 2021-01-08 | 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 |
| CN113051644A (en) * | 2021-03-18 | 2021-06-29 | 国网新源控股有限公司 | Method for determining excavation diameter of hydropower station diversion inclined shaft 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 | Publication date |
|---|---|
| CN110607798B (en) | 2024-03-22 |
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