CN209779580U - Low-rise diversion tunnel water retaining structure - Google Patents
Low-rise diversion tunnel water retaining structure Download PDFInfo
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- CN209779580U CN209779580U CN201822155545.6U CN201822155545U CN209779580U CN 209779580 U CN209779580 U CN 209779580U CN 201822155545 U CN201822155545 U CN 201822155545U CN 209779580 U CN209779580 U CN 209779580U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The utility model discloses a low-rise diversion tunnel water retaining structure, water retaining structure includes the tunnel and the concora crush unit, be provided with the manger plate unit on the tunnel, the unit of draining separates the tunnel trip for there being pressure section and non-pressure section, the manger plate unit is including the n manger plate gate device of arranging side by side, every manger plate gate device all includes the inspection lock well and the work lock well of arranging side by side, the unit of draining includes accident lock well and the lock chamber that drains, the concora crush unit includes that the concora crush is responsible for, the concora crush is responsible for the inspection lock well and the work lock well intercommunication between two adjacent manger plate gate devices. The plugging method comprises the step of plugging the non-pressure section after the water retaining operation is carried out by using the water retaining structure. Adopt the technical scheme of the utility model, make the diversion tunnel possess and rely on self manger plate gate device manger plate to carry out the shutoff construction when high water head, avoided traditional low elevation diversion tunnel shutoff process to need arrange in addition a diversion tunnel carry out the shutoff, greatly save engineering volume and investment.
Description
Technical Field
The utility model particularly relates to a hydraulic and hydroelectric engineering technical field especially relates to a low-rise diversion tunnel water retaining structure.
Background
In the high dam and large reservoir project, as the water head is high and the construction period is as long as several years, diversion tunnels are required to be arranged in layers according to dam filling elevation, diversion flood control requirements, lower gate water storage plans and the like. Plugging of the low-layer diversion tunnel is generally accompanied with water storage of the lower gate of the project and power generation in advance. At the moment, a diversion tunnel is often required to be independently arranged on the middle layer, and the reservoir water level in the lower gate water storage period is adjusted, so that the requirements of a low-layer diversion tunnel blocking water head and a construction period can be met, and the requirements of reservoir water storage power generation and ecological flow discharging can be met. In order to meet the requirements, simplify the water storage procedure of the lower gate, cancel a middle-layer diversion tunnel which is arranged independently and reduce the engineering investment, a graded water retaining arrangement mode is required to be adopted, so that the water storage device has the capability of bearing a higher water retaining water head.
SUMMERY OF THE UTILITY MODEL
in order to solve the technical problem, the utility model provides a low floor diversion tunnel water retaining structure.
The utility model discloses a realize through following technical scheme.
the utility model provides a low-rise diversion tunnel manger plate structure, including tunnel and flat pressing unit, along rivers flow direction in the tunnel is in according to appropriate interval arranged in proper order on the tunnel manger plate unit, the unit that drains, wherein, is located the tunnel in the unit upper reaches of draining is for having the pressure section, is located the tunnel in the unit low reaches of draining is the non-pressure section, the manger plate unit include along the tunnel flows to n manger plate gate device according to appropriate interval side by side arrangement in rivers flow direction, and n is the natural number, and every manger plate gate device all includes the inspection lock well and the work lock well of side by side arrangement in the tunnel, the unit that drains includes along the tunnel is with rivers flow direction according to appropriate interval side by side arrangement's accident lock well and drainage lock chamber, inspection lock well, work lock well, accident lock well and drainage lock chamber are configured respectively in and can switch on or block inspection lock well of rivers in the tunnel, The flat pressing unit comprises a flat pressing main pipe, a first branch pipe and a second branch pipe are connected to the flat pressing main pipe, the first branch pipe is communicated with the service lock well, the second branch pipe is communicated with the service lock well, and a plug is arranged in the non-pressure section.
The water discharge gate is an arc gate.
The overhaul gate, the working gate and the accident gate are all flat gates.
Defining the pressure section A water head as H0The number of the water retaining gate devices is n, the diameter of the section of the pressing section B is D, the bearing water head of each stage of water retaining gate device is delta H, and when the water retaining gate devices of each stage are designed according to the equal water thrust principle, H is0Δ H, D satisfy the following relationship:
Defining the pressure section A water head as H0The number of the water retaining gate devices is n, the diameter of the section of the pressing section B is D, and the bearing water head of each stage of water retaining gate device is HiWherein i is 1,2,3, …, n, when the water gate device of each stage is designed according to the principle of unequal water thrust, then H0、HiD satisfies the following relational expression:
H0＝H1+H2+...Hn+D。
The tunnel quantity is many to each tunnel arranges respectively in the elevation of difference, wherein, along rivers direction in the tunnel, all has arranged water retaining unit, the unit of draining side by side according to appropriate interval on between every tunnel, water retaining unit includes along n level water retaining gate device that rivers direction arranged side by side according to appropriate interval in the tunnel, the unit of draining includes along the tunnel is with appropriate interval arrangementthe inner water flow direction is arranged in parallel in the accident gate device and the emptying gate device on the tunnel according to proper intervals, along the sequence of the elevation of the tunnel from high to low, the quantity of the water retaining gate devices contained in the water retaining units at all levels is gradually increased, the quantity of the tunnels is defined as k, and the pressure section A water head on each tunnel is HjWherein j is 1,2, …, k, the cross-section diameter of the pressing section B is D, then HkD satisfies the following relational expression:
Hj-Hj-1＝D。
Along rivers flow direction to within the tunnel rises from 2 individual water retaining gate devices, and the inspection lock well and the working lock well within every water retaining gate device still communicate through communicating pipe.
Along the flow direction of water flow in the tunnel, starting from the 2 nd water gate device, the working gate well in each water gate device is also communicated with the maintenance gate well in the next water gate device through a drainage channel A, the working gate well in the last water gate device is communicated with the pressure section through an overflow channel B and a flat pressure vertical well in sequence, the intersection joint of the overflow channel B and the flat pressure vertical well is also communicated with the non-pressure section through an overflow channel C, the flat pressure main pipe also communicates the working gate well in the last water gate device with the flat pressure vertical well, the arrangement height of each drainage channel A is consistent with the control water level elevation of the water gate device connected with the drainage channel A, the arrangement height of the overflow channel B is consistent with the control water level elevation of the water drain gate, and the arrangement height of the overflow channel C is consistent with the control water level elevation of the water drain gate, the tail end of the overflow channel C is close to the arrangement position of the plug, a water filling pipe is further arranged in the accident gate well, and the overflow channel C is communicated with the pressure section through the water filling pipe.
Still bury underground the breather pipe in the accident floodgate well, breather pipe one end with press the section intercommunication, the other one end of breather pipe upwards extends to above the floodgate room control water level elevation of draining.
The tunnel can be arranged in multiple layers, and the water discharging unit, the flat pressing unit and the water retaining unit are arranged on each layer of tunnel according to any one of claims 1 to 7.
And the arrangement height of each layer of tunnel is taken as a reference amount, and the quantity of the water retaining gate devices contained in the water retaining units arranged on each layer of tunnel is gradually increased layer by layer according to the direction from the height to the bottom.
The beneficial effects of the utility model reside in that: adopt the technical scheme of the utility model, share the total head that comes from the tunnel upper reaches through the manger plate gate device at different levels, alleviateed the water pressure of bearing of the manger plate gate device at different levels, guaranteed the operation safety of whole manger plate structure, make whole manger plate structure possess the ability of bearing higher upper reaches total head, and through corresponding shutoff method, be convenient for carry out the retaining operation through whole manger plate structure, especially in flood season, can also participate in the joint diversion degree of next phase when reservoir low water level moves in the flood season. The device reduces the later diversion measures and the pressure of the building, provides convenience for water storage operation, and ensures the operation safety. The utility model discloses a not only saved low floor diversion tunnel shutoff and needed to increase engineering measure and the investment that supplementary diversion tunnel reduces the shutoff flood peak, also can be in the diversion tunnel of full height or layering arrangement in the engineering work progress alone or the combination use, provide multiple nimble water conservancy diversion and shutoff scheme, satisfy the water conservancy diversion and the shutoff requirement of each period under the various operating modes, simplified diversion tunnel shutoff procedure, had fine popularization and application and worth.
drawings
Fig. 1 is a front view of the present invention;
Fig. 2 is a plan view of the present invention.
In the figure: 1-tunnel, 2-water discharging unit, 3-concora crush unit, 4-water retaining unit, 5-plug, 101-pressure section A, 102-non-pressure section, 103-pressure section B, 201-water discharging gate, 202-accident gate, 203-accident gate well, 205-water discharging gate chamber, 207-vent pipe, 208-water charging pipe, 301-concora crush main pipe, 302-communicating pipe, 303-water discharging channel A, 304-overflow channel B, 305-overflow channel C, 307-concora crush vertical shaft, 401-working gate, 402-maintenance gate, 403-working gate well and 404-maintenance gate well.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of protection claimed is not limited to the description.
The utility model discloses a low-rise diversion tunnel manger plate structure, as shown in figure 1, as shown in figure 2, including tunnel 1 and flat pressing unit 3, along the interior rivers flow direction of tunnel 1, water retaining unit 4 has been arranged in proper order on tunnel 1 according to suitable interval, the unit 2 drains, wherein, the tunnel 1 that is located the 2 upper reaches of unit that drains is for having a pressure section A101, the tunnel 1 that is located the 2 low reaches of unit 2 that drains is non-pressure section 102, water retaining unit 4 includes along tunnel 1 interior rivers flow direction according to a suitable interval n water retaining gate device that arranges side by side, n is the natural number, every water retaining gate device all includes service lock well 404 and the work lock well 403 that arrange side by side, the unit 2 that drains includes along tunnel 1 with rivers flow direction according to suitable interval accident lock well and the room 205 of arranging side by side, service lock well 404, work lock well 403, the service lock well is configured with the interior service lock room 205 respectively and can switch on or block the service lock well 402 that rivers in order to the tunnel 1, Working gate 401, accident gate 202 and the floodgate 201 that drains, concora crush unit 3 includes concora crush person in charge 301, is connected with first branch pipe and second branch pipe on concora crush person in charge 301, and first branch pipe communicates with maintenance lock well 404, and the second branch pipe communicates with working lock well 403, is provided with end cap 5 within non-pressure section 102.
adopt the technical scheme of the utility model, share the total head that comes from the tunnel upper reaches through the manger plate gate device at different levels, alleviateed the bearing pressure of the manger plate gate device at different levels, guaranteed the operation safety of whole manger plate structure, make whole manger plate structure possess the ability of the higher total head in upper reaches of maturity to through corresponding shutoff method, be convenient for carry out the retaining operation through whole manger plate structure, especially in flood season, can also participate in the joint water conservancy diversion flood of next period when the reservoir low water level moves. The device reduces the later diversion measures and the pressure of the building, provides convenience for water storage operation, and ensures the operation safety.
Further, the discharge gate 201 is a radial gate. The service gate 402, the working gate 401 and the accident gate 202 are all flat plate gates. By adopting the technical scheme, the manufacturing cost of the gate is reduced, the construction is facilitated, and the preferable water drain gate 201, the overhaul gate 402, the working gate 401 and the accident gate 202 are respectively driven by power equipment which works independently, so that the control is facilitated, and the mutual interference is avoided.
Further, the total water head born by the water retaining unit 4 is set as H0The water level elevation of the i-th level water gate device is controlled to be HiWherein, i is 1,2, …, n, then H0、HiThe number n of the water retaining gate devices satisfies the following relational expression:
By adopting the technical scheme, the main water head from the tunnel upstream is shared by all levels of water retaining gate devices step by step, so that the pressure of all levels of water retaining gate devices is reduced, the operation safety of the whole water retaining structure is ensured, further, the design water retaining capacity of the maintenance gate 402 and the working gate 401 within the first level water retaining gate device within the water retaining unit 4 is optimized, and the water retaining capacity of each maintenance gate 402 and the working gate 401 within the water retaining unit 4 is reserved with proper margin during design construction.
further, the flow direction of the water flow in the tunnel 1 is from the 2 nd water gate device, and the service gate 404 and the working gate 403 in each water gate device are also communicated through the communicating pipe 302. The flat pressing unit 3 is mainly used for filling water and flat pressing for the whole water retaining structure, and the water pressure balance of the whole structure is guaranteed.
Along the water flow direction in the tunnel 1, from the 2 nd water gate device, the working gate 403 in each water gate device is also communicated with the access gate 402 in the next water gate device through the drainage channel A303, the working gate 403 in the last water gate device is communicated with the pressure section A101 through the overflow channel B304 and the flat pressing vertical shaft 307 in sequence, the junction of the overflow channel B304 and the flat pressing vertical shaft 307 is also communicated with the non-pressure section 201 through the overflow channel C305, the flat pressing main pipe 301 is also communicated with the flat pressing vertical shaft 307 through the working gate 403 in the last water gate device, the arrangement height of each drainage channel A303 is consistent with the control water level elevation of the next water gate device, the arrangement height of the overflow channel B304 is consistent with the control water level elevation of the accident gate device, the arrangement height of the overflow channel C305 is consistent with the control water level elevation of the water discharge chamber 205, the tail end of the overflow channel C305 is close to the setting position of the plug 5, a water filling pipe 208 is further arranged in the accident lock well 203, and the overflow channel C305 is communicated with the pressure section A101 through the water filling pipe 208. By adopting the technical scheme, the tail end of the overflow channel C305 is close to the arrangement position of the plug 5, so that the overflow channel C305 can be connected to the downstream of the plug 5 for individual plugging, or plugging is carried out after pipe penetrating drainage is carried out in the plug 5.
Preferably, a vent pipe 207 is further embedded in the emergency lock well 203, one end of the vent pipe 207 is communicated with the pressure section A101, and the other end of the vent pipe 207 extends upwards to a position above the water level controlled by the water discharge lock chamber 205.
In addition, the tunnel 1 can be set to be the multilayer, all be provided with on every layer of tunnel 1 and turn on water unit 2, concora crush unit 3 and manger plate unit 4. The arrangement height of each layer of tunnel 1 is taken as a reference amount, and the quantity of the water retaining gate devices contained in the water retaining units 4 arranged on each layer of tunnel 1 is gradually increased layer by layer according to the direction from the height to the bottom. The arrangement elevation of each layer of tunnel 1 is determined by the diversion requirement.
Furthermore, the utility model discloses when using, can operate according to following method:
The method comprises the following steps: the water flow in the tunnel 1 is cut off by a water discharge gate 201;
Step two: when the water level rises to be level with the overflow channel C305, closing the working gate shaft 403 in the nth water retaining gate device;
Step three: when the water level rises to be level with the overflow channel B304, closing the working gate shaft 403 in the (n-1) th water retaining gate device;
Step four: when the water level rises to the level of an overflow channel A303 connected with the (n-1) th water retaining gate device, closing the working gate shaft 403 in the (n-2) th water retaining gate device;
Step five: repeating the fourth step until all the water retaining units 4 are closed to form all the working gate wells 403 of the water retaining gate devices;
Step six: the pressureless section 102 is blocked by a plug 5.
The technical scheme of the application is put into practical application by Guiyang survey design research institute Co., Ltd of the China electric construction group, is subsidized by Qian science and union support [2017]2865 of the science and technology project of the Guizhou province science and technology support plan and DJ-ZDXM-2017-05 of the China electric construction research project in the implementation, achieves the beneficial technical effects after the implementation, and has good social benefits.
Claims (11)
1. The utility model provides a low floor diversion tunnel water retaining structure which characterized in that: including tunnel (1) and flat pressing unit (3), along the interior rivers flow direction of tunnel (1), according to suitable interval in proper order arranged manger plate unit (4), unit (2) drain on tunnel (1), wherein, be located tunnel (1) of unit (2) upper reaches of draining is for having a pressure section A (101), is located tunnel (1) of unit (2) low reaches of draining is non-pressure section (102), is located tunnel (1) between having a pressure section A (101) and non-pressure section (102) is for having a pressure section B (103), manger plate unit (4) include along a plurality of manger plate gate devices of n that tunnel (1) interior rivers flow direction is arranged according to suitable interval side by side, n is the natural number, and every manger plate gate device all includes inspection shaft (404) and work floodgate well (403) that arrange side by side, unit (2) drain includes along the interior rivers flow direction of tunnel (1) is arranged according to suitable interval side by side accident floodgate well (203) that arrange according to suitable interval side by side ) And the floodgate room (205) that drains, dispose respectively within overhaul floodgate well (404), work floodgate well (403), accident floodgate well (203) and the floodgate room (205) that drains and can switch on or block overhaul gate (402), work gate (401), accident gate (202) and the floodgate (201) of rivers within tunnel (1), the concora crush unit (3) are responsible for (301) including the concora crush, be connected with first branch pipe and second branch pipe on being responsible for (301) of concora crush, first branch pipe with overhaul floodgate well (404) intercommunication, the second branch pipe with work floodgate well (403) intercommunication, be provided with end cap (5) within non-pressure section (102).
2. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: the water drain gate (201) is an arc gate.
3. the water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: the overhaul gate (402), the working gate (401) and the accident gate (202) are all flat plate gates.
4. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: defining the pressure section A (101) as a water head H0The number of the water retaining gate devices is n, the diameter of the section of the pressing section B (103) is D, the bearing water head of each stage of water retaining gate device is delta H, and when each stage of water retaining gate device is designed according to the equal water thrust principle, H is0Δ H, D satisfy the following relationship:
5. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: defining the pressure section A (101) as a water head H0The number of the water retaining gate devices is n, the diameter of the section of the pressing section B (103) is D, and the bearing water head of each stage of water retaining gate device is HiWherein i is 1,2,3, …, n, when the water gate device of each stage is designed according to the principle of unequal water thrust, then H0、Hid satisfies the following relational expression:
H0＝H1+H2+…Hn+D。
6. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: the tunnelthe number of the tunnels (1) is multiple, and each tunnel (1) is respectively arranged at different elevations, wherein, along the inner water flow direction of the tunnels (1), the water retaining unit (4) and the water discharging unit (2) are arranged on each tunnel (1) in parallel according to a proper distance, the water retaining unit (4) comprises n-stage water retaining gate devices which are arranged in parallel along the inner water flow direction of the tunnel (1) at proper intervals, the unit of draining (2) include along accident floodgate well (203) and the lock chamber of draining (205) that the interior rivers flow direction of tunnel (1) arranged side by side according to suitable interval, along tunnel (1) elevation from high to low order, the quantity of the manger plate gate device that contains within each grade manger plate unit (4) increases progressively step by step, defines tunnel (1) quantity is k, on each tunnel (1) have the pressure section A (101) flood peak to be H.jWherein j is 1,2, …, k, the cross-section diameter of the pressing section B (103) is D, then Hkd satisfies the following relational expression:
Hj-Hj-1＝D。
7. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: along the interior rivers flow direction of tunnel (1), from 2 nd manger plate gate device, overhaul lock well (404) and work lock well (403) within every manger plate gate device still communicate through communicating pipe (302).
8. the water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: along the inner water flow direction of the tunnel (1), starting from the 2 nd water gate device, the working gate well (403) in each water gate device is also communicated with the maintenance gate well (404) in the next water gate device through a drainage channel A (303), the working gate well (403) in the last water gate device is communicated with the pressure section A (101) through an overflow channel B (304) and a flat pressure vertical well (307) in sequence, the junction where the overflow channel B (304) and the flat pressure vertical well (307) meet is also communicated with the non-pressure section (102) through an overflow channel C (305), the flat pressure vertical well (403) in the last water gate device is also communicated with the flat pressure water level (307), the arrangement height of each drainage channel A (303) is consistent with the control water level height of the water gate device connected with the drainage channel A, the arrangement height of the overflow channel B (304) is consistent with the control height of the water drain gate (201), the arrangement height of the overflow channel C (305) is consistent with the height of the water level controlled by the water discharge gate (201), the tail end of the overflow channel C (305) is close to the arrangement position of the plug (5), a water filling pipe (208) is further arranged inside the accident gate shaft (203), and the overflow channel C (305) is communicated with the pressure section A (101) through the water filling pipe (208).
9. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: an air pipe (207) is further buried in the accident lock well (203), one end of the air pipe (207) is communicated with the pressure section A (101), and the other end of the air pipe (207) extends upwards to a position above the water level controlled by the water discharge lock chamber (205).
10. The water retaining structure of a low-rise diversion tunnel according to claim 1, wherein: the tunnel (1) can be set into a plurality of layers, and the water discharging unit (2), the flat pressing unit (3) and the water retaining unit (4) are arranged on each layer of tunnel (1).
11. the water retaining structure of a low-rise diversion tunnel according to claim 10, wherein: and the arrangement height of each layer of tunnel (1) is taken as a reference amount, and the number of the water retaining gate devices contained in the water retaining units (4) arranged on each layer of tunnel (1) is gradually increased layer by layer according to the direction from the height to the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822155545.6U CN209779580U (en) | 2018-12-21 | 2018-12-21 | Low-rise diversion tunnel water retaining structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822155545.6U CN209779580U (en) | 2018-12-21 | 2018-12-21 | Low-rise diversion tunnel water retaining structure |
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| CN209779580U true CN209779580U (en) | 2019-12-13 |
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| CN201822155545.6U Active CN209779580U (en) | 2018-12-21 | 2018-12-21 | Low-rise diversion tunnel water retaining structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518666A (en) * | 2018-12-21 | 2019-03-26 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of low layer diversion tunnel water-retaining structure and method for blocking |
-
2018
- 2018-12-21 CN CN201822155545.6U patent/CN209779580U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109518666A (en) * | 2018-12-21 | 2019-03-26 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of low layer diversion tunnel water-retaining structure and method for blocking |
| CN109518666B (en) * | 2018-12-21 | 2023-09-26 | 中国电建集团贵阳勘测设计研究院有限公司 | Water retaining structure and blocking method for low-layer diversion tunnel |
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