CN201874614U - Drainage structure for emptying overhaul of derivation tunnel - Google Patents
Drainage structure for emptying overhaul of derivation tunnel Download PDFInfo
- Publication number
- CN201874614U CN201874614U CN201020615875XU CN201020615875U CN201874614U CN 201874614 U CN201874614 U CN 201874614U CN 201020615875X U CN201020615875X U CN 201020615875XU CN 201020615875 U CN201020615875 U CN 201020615875U CN 201874614 U CN201874614 U CN 201874614U
- Authority
- CN
- China
- Prior art keywords
- gallery
- drainage
- diversion tunnel
- tunnel
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to a drainage structure for emptying overhaul of a derivation tunnel, which is simple in structure and high in safety, removes underground water seepage accumulated along lines of the derivation tunnel timely, conveniently and controllably, improves work efficiency and safety, shortens overhaul time and increase power generation benefit of a power station. The technical scheme includes that the drainage structure is characterized by being arranged below the tail end of the derivation tunnel, the drainage structure comprises a communication gallery, an operation gallery and a drainage gallery which are sequentially communicated with each other, the other end of the communication gallery is communicated with the external via a construction branch tunnel, a water inlet of the drainage gallery is communicated with the derivation tunnel via a drainage pipeline, and a water outlet of the drainage gallery is communicated with an external drainage channel. The drainage structure is mainly used in water conservation and hydroelectric engineering with long derivation tunnels.
Description
Technical field
The utility model relates to a kind of diversion tunnel emptying drainage for overhaul structure, is mainly used in the Hydraulic and Hydro-Power Engineering with long diversion tunnel.
Background technology
In having the Hydraulic and Hydro-Power Engineering of long diversion tunnel, southwest particularly, because tunnel hole line length, and the complex formation that passes through is when building diversion tunnel, even after in the construction period tunnel country rock underground water being carried out grout sealing in the Fu Shui stratum, if external water pressure is higher, for guaranteeing liner structure safety, still need to arrange drain hole draining pressure release, and underground water is difficult to realize comprehensive grout sealing of " watertight " at tunnel lining.Therefore, between diversion tunnel emptying turn(a)round, tunnel still has the underground infiltration of some along the line, because tunnel is long, the total amount after the accumulative total along the line may be also not little, if untimely eliminating, will affect greatly tunnel and unit maintenance, when water percolating capacity is big even will cause and to overhaul.Common engineering adopts at the tunnel end and enters by a construction hole mandoor, at the tunnel middle part interim sand hill cofferdam water retaining is set then, and the interior underground infiltration of suction pump machinery pump drainage tunnel is set from a construction hole discharge, Zheng Tao operating process is cumbersome like this, operating efficiency is lower, water pump breaks down in case draw water, and will bring security risk to long tunnel service work, and is particularly all the more so for hole group's tunnel.Therefore the large-scale long tunnel end that passes through the Fu Shui stratum is provided with specially, and the controlled underground infiltration discharge structure of gravity flow is very effective, convenient, safe, a novel measure.
Summary of the invention
The technical problems to be solved in the utility model is: the problem at above-mentioned existence provides a kind of simple in structure, safe diversion tunnel emptying drainage for overhaul structure, can be in time, convenient, underground infiltration that controlled eliminating diversion tunnel compiles along the line, increase work efficiency and safety, shorten the repair time, increase the purpose of plant generator benefit to reach.
The technical scheme that the utility model adopted is: diversion tunnel emptying drainage for overhaul structure, it is characterized in that: this structural configuration is below the diversion tunnel end, it comprises access gallery, operating gallery and the collector drain that is communicated with successively, wherein the access gallery other end is in communication with the outside by a construction hole, the collector drain water inlet is communicated with diversion tunnel by drainage pipe, and delivery port is communicated with extraneous drainage channel.
Described drainage pipe comprises and is positioned under the diversion tunnel and the draining shaft that is communicated with it, this draining shaft lower end connects the valve gallery and the operating gallery of horizontal arrangement successively, the draining shaft water inlet is provided with trashrack, bury the draining steel pipe in the draining shaft underground, and fill concrete between the two, the draining steel pipe is connected to collector drain through drawing behind valve gallery and the operating gallery successively, and maintenance valve and service valve are installed respectively on the draining steel pipe, wherein overhauls valve and is positioned at the service valve upstream side.
Described maintenance valve and service valve are positioned at the valve gallery.
Rock mass thickness between described diversion tunnel and access gallery, operating gallery and the collector drain is all greater than footpath, three times of headrace tunnel excavation holes.
Concrete lining is built or be sprayed with to each cavern's inwall of described discharge structure.
The beneficial effects of the utility model are: the utility model is provided with below the diversion tunnel end by access gallery, operating gallery, collector drain and the drainage for overhaul structure that connects the drainage pipe composition of diversion tunnel and collector drain, between long diversion tunnel emptying turn(a)round, can utilize drainage pipe timely, get rid of the underground infiltration that diversion tunnel compiles easily along the line, valve is set on drainage pipe simultaneously, realize that diversion tunnel is along the controlled discharging of the safety of the underground infiltration of journey, for the diversion tunnel maintenance provides the good operation condition, the operating efficiency and the safety of long diversion tunnel maintenance have been improved simultaneously greatly, effectively shorten the long diversion tunnel repair time, thereby increased the power benefit in power station.
Description of drawings
Fig. 1 is a layout plan of the present utility model.
Fig. 2 is that the A-A of Fig. 1 is to sectional view.
Fig. 3 is that the B-B of Fig. 1 is to sectional view.
The specific embodiment
From arranging concision and compact as far as possible, saving the engineering quantity angle sets out, the position of emptying drainage for overhaul structure should be arranged in conjunction with the extraneous drainage channel 6 of diversion tunnel 1 end and (prop up hole 5 for the construction that diversion tunnel 1 end has existed, the position that then needs to consider a construction hole 5 and drainage channel 6 is simultaneously arranged), generally be positioned at pressure piping turbine gate upstream side near the diversion tunnel end.As shown in Figure 1-Figure 3, the present embodiment structure comprises the access gallery 2 that is communicated with successively, operating gallery 3 and collector drain 4, wherein access gallery 2 is as the daily People's Bank of China that implements diversion tunnel 1 emptying drain operation or the traffic aisle of motor vehicles and machines, its construction is to utilize construction to prop up hole 5 to excavate detour to diversion tunnel 1 bottom (being that the access gallery other end is in communication with the outside by a construction hole), this construction hole 5 can exist before arranging this routine discharge structure, it also can be new excavation, collector drain 4 water inlets are communicated with diversion tunnel 1 by drainage pipe, and delivery port is communicated with extraneous drainage channel 6.
Described drainage pipe comprises the draining shaft 7 that is positioned under the diversion tunnel 1 and is communicated with it, this draining shaft lower end connects the valve gallery 8 and the operating gallery 3 of horizontal arrangement successively, in this example, described valve gallery 8 and operating gallery 3 are positioned on the same horizontal plane, and be arranged vertically into the L type mutually, both joints are communicated with access gallery 2 simultaneously; Draining shaft 7 water inlets are provided with the trashrack 9 of steel work processing, to prevent that foreign material from entering the obstruction drainage pipe, bury draining steel pipe 10 in the draining shaft 7 underground, and fill concrete between the two, draining steel pipe 10 is connected to collector drain 4 through drawing behind valve gallery 8 and the operating gallery 3 successively, and, be used to improve the stressing conditions of draining steel pipe itself at draining steel pipe 10 corner concreting anchor blocks; Maintenance valve 11 and service valve 12 are installed respectively on the draining steel pipe 10, in order to control diversion tunnel 1 and the drainage of draining steel pipe 10 interior current and the maintenance of discharge structure, wherein overhaul valve 11 and be positioned at service valve 12 upstream sides, and both all are positioned at valve gallery 8.
In order to guarantee the safety of diversion tunnel emptying drainage for overhaul structure, access gallery 2 in this structure, operating gallery 3, collector drain 4 three part caverns all need to keep enough safe distances with diversion tunnel 1, rock mass thickness between above-mentioned three caverns and the diversion tunnel 1 should be greater than footpath, three times of diversion tunnels, 1 excavation hole, and, can consider diversion tunnel emptying drainage for overhaul structure is carried out comprehensive reinforced concrete lining layer security protection according to on-the-spot geological condition.
The operating principle of present embodiment is: diversion tunnel 1 is between the emptying turn(a)round, the service work personnel are through a construction hole 5, enter access gallery 2, until valve gallery 8, open the service valve 12 in the valve gallery 8, being trapped in underground infiltration in the diversion tunnel 1 promptly sees through trashrack 9 through draining shaft 7 water inlets and enters draining steel pipe 10 in the draining shaft 7 under the effect of deadweight, current drain into collector drain 4 by draining steel pipe 10, drain into extraneous drainage channel 6 from collector drain 4 again, thereby be that the maintenance condition is created in diversion tunnel 1 maintenance.
When service valve 12 breaks down in the valve gallery 8, close the maintenance valve 11 of its upstream side, so that the service valve 12 of maintenance or replacing draining steel pipe 10.The voltage withstand class of maintenance valve 11 and service valve 12 is according to actual artesian head and consider that certain safety allowance is definite.
Claims (5)
1. diversion tunnel emptying drainage for overhaul structure, it is characterized in that: this structural configuration is in the terminal below of diversion tunnel (1), it comprises access gallery (2), operating gallery (3) and the collector drain (4) that is communicated with successively, wherein access gallery (2) other end is in communication with the outside by a construction hole (5), collector drain (4) water inlet is communicated with diversion tunnel (1) by drainage pipe, and delivery port is communicated with extraneous drainage channel (6).
2. diversion tunnel emptying drainage for overhaul structure according to claim 1, it is characterized in that: described drainage pipe comprises the draining shaft (7) that is positioned under the diversion tunnel (1) and is communicated with it, this draining shaft lower end connects the valve gallery (8) and the operating gallery (3) of horizontal arrangement successively, draining shaft (7) water inlet is provided with trashrack (9), bury draining steel pipe (10) in the draining shaft (7) underground, and fill concrete between the two, draining steel pipe (10) passes through successively to draw behind valve gallery (8) and the operating gallery (3) and is connected to collector drain (4), maintenance valve (11) and service valve (12) are installed respectively on the draining steel pipe (10), are wherein overhauled valve (11) and be positioned at service valve (12) upstream side.
3. diversion tunnel emptying drainage for overhaul structure according to claim 2 is characterized in that: described maintenance valve (11) and service valve (12) are positioned at valve gallery (8).
4. according to claim 1 or 2 or 3 described diversion tunnel emptying drainage for overhaul structures, it is characterized in that: the rock mass thickness between described diversion tunnel (1) and access gallery (2), operating gallery (3) and the collector drain (4) is all greater than footpath, three times of diversion tunnels (1) excavation hole.
5. according to claim 1 or 2 or 3 described diversion tunnel emptying drainage for overhaul structures, it is characterized in that: concrete lining is built or be sprayed with to each cavern's inwall of described discharge structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020615875XU CN201874614U (en) | 2010-11-15 | 2010-11-15 | Drainage structure for emptying overhaul of derivation tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020615875XU CN201874614U (en) | 2010-11-15 | 2010-11-15 | Drainage structure for emptying overhaul of derivation tunnel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874614U true CN201874614U (en) | 2011-06-22 |
Family
ID=44162536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020615875XU Expired - Lifetime CN201874614U (en) | 2010-11-15 | 2010-11-15 | Drainage structure for emptying overhaul of derivation tunnel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874614U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505671A (en) * | 2011-11-18 | 2012-06-20 | 中国水电顾问集团成都勘测设计研究院 | Overhead maintenance passage for diversion tunnels |
| CN102720511A (en) * | 2012-06-15 | 2012-10-10 | 中铁十二局集团第二工程有限公司 | Tunnel construction structure for draining and desilting |
| CN102808399A (en) * | 2012-08-24 | 2012-12-05 | 中水北方勘测设计研究有限责任公司 | Service drainage structure of through flow hydropower station |
| CN106761919A (en) * | 2017-01-10 | 2017-05-31 | 西南交通大学 | A kind of high pressure water enrichment tunnel automatic Regulation sluicing control device |
| CN107829407A (en) * | 2017-10-18 | 2018-03-23 | 中国电建集团中南勘测设计研究院有限公司 | One kind can drainage for overhaul tunnel, construction method and repair method |
| CN108194120A (en) * | 2018-03-15 | 2018-06-22 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel construction with generating function |
| CN109469025A (en) * | 2018-12-21 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of spilling water gallery system for high dam water blocking blowdown system step by step |
| CN110004957A (en) * | 2019-04-02 | 2019-07-12 | 武大巨成结构股份有限公司 | A kind of underwater prestress steel cofferdam device of lowering heartn type for active well of fetching water |
| CN111733870A (en) * | 2019-03-25 | 2020-10-02 | 中冶京诚工程技术有限公司 | Inspection, sludge discharge and emptying system and method for corridor water supply pipeline |
-
2010
- 2010-11-15 CN CN201020615875XU patent/CN201874614U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102505671A (en) * | 2011-11-18 | 2012-06-20 | 中国水电顾问集团成都勘测设计研究院 | Overhead maintenance passage for diversion tunnels |
| CN102505671B (en) * | 2011-11-18 | 2013-11-20 | 中国水电顾问集团成都勘测设计研究院 | Overhead maintenance passage for diversion tunnels |
| CN102720511A (en) * | 2012-06-15 | 2012-10-10 | 中铁十二局集团第二工程有限公司 | Tunnel construction structure for draining and desilting |
| CN102808399A (en) * | 2012-08-24 | 2012-12-05 | 中水北方勘测设计研究有限责任公司 | Service drainage structure of through flow hydropower station |
| CN102808399B (en) * | 2012-08-24 | 2015-01-14 | 中水北方勘测设计研究有限责任公司 | Service drainage structure of through flow hydropower station |
| CN106761919A (en) * | 2017-01-10 | 2017-05-31 | 西南交通大学 | A kind of high pressure water enrichment tunnel automatic Regulation sluicing control device |
| CN107829407A (en) * | 2017-10-18 | 2018-03-23 | 中国电建集团中南勘测设计研究院有限公司 | One kind can drainage for overhaul tunnel, construction method and repair method |
| CN108194120A (en) * | 2018-03-15 | 2018-06-22 | 四川省交通运输厅公路规划勘察设计研究院 | Tunnel construction with generating function |
| CN108194120B (en) * | 2018-03-15 | 2023-11-28 | 四川省公路规划勘察设计研究院有限公司 | Tunnel structure with power generation function |
| CN109469025A (en) * | 2018-12-21 | 2019-03-15 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of spilling water gallery system for high dam water blocking blowdown system step by step |
| CN111733870A (en) * | 2019-03-25 | 2020-10-02 | 中冶京诚工程技术有限公司 | Inspection, sludge discharge and emptying system and method for corridor water supply pipeline |
| CN110004957A (en) * | 2019-04-02 | 2019-07-12 | 武大巨成结构股份有限公司 | A kind of underwater prestress steel cofferdam device of lowering heartn type for active well of fetching water |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201874614U (en) | Drainage structure for emptying overhaul of derivation tunnel | |
| CN102162230B (en) | Design method for reconstructing diversion tunnel into flood discharge tunnel in 'tail-raising' mode | |
| CN103556611B (en) | The cushion pool filling and drainage system that can generate electricity | |
| CN205259201U (en) | Device is arranged in accuse of tunnel groundwater | |
| CN106968227B (en) | Maintenance arrangement structure and maintenance method of permanent plugs of diversion tunnel of high arch dam | |
| CN110195597A (en) | A kind of water-storage chamber and construction method suitable for TBM construction | |
| CN204676504U (en) | The emptying maintenance structure of a kind of long tailwater tunnel group without gravity flow ejectment condition | |
| CN217839924U (en) | Permanent drainage structures in water conservancy diversion tail water tunnel reconstruction end cap upper reaches | |
| CN203768881U (en) | Water seepage draining device for corridors of mountain and dam body | |
| CN206928255U (en) | The maintenance arrangement of the permanent plug of induced joint diversion tunnel | |
| WO2023173569A1 (en) | Method for treating underground water disaster of weak-permeability soil layer slope | |
| CN205776115U (en) | Diversion tunnel lock chamber maintenance structure | |
| CN101487279A (en) | Segmented water-holding automatic water delivery control method in water delivery engineering | |
| CN102505671B (en) | Overhead maintenance passage for diversion tunnels | |
| CN202323899U (en) | Arrangement structure for underground gate chambers of diversion tunnels | |
| CN104264642A (en) | Drainage tunnel and drainage method for ditch water treatment | |
| CN210975737U (en) | Reservoir dam body culvert pipe transformation structure | |
| CN104631604A (en) | Water-collecting well in hydropower house | |
| CN111321714B (en) | A overhaul drainage system for V style of calligraphy tailwater tunnel crowd | |
| CN204608736U (en) | A kind of power plant building be arranged in solution cavity | |
| CN202730719U (en) | Rock-fill dam measuring weir | |
| CN208219579U (en) | The structure that a kind of diversion tunnel and ecological drainage tunnel combine | |
| CN206721845U (en) | A kind of diversion tunnel | |
| CN203346860U (en) | Structure for solving problem of sediment accumulation at the back of diversion tunnel maintenance mandoor | |
| CN204225065U (en) | The curtain grouting for antiseep structure of power station conduit pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110622 |