CN109469025B - Overflow gallery system for step-by-step water retaining and emptying system of high dam - Google Patents
Overflow gallery system for step-by-step water retaining and emptying system of high dam Download PDFInfo
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- CN109469025B CN109469025B CN201811569927.1A CN201811569927A CN109469025B CN 109469025 B CN109469025 B CN 109469025B CN 201811569927 A CN201811569927 A CN 201811569927A CN 109469025 B CN109469025 B CN 109469025B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/04—Valves, slides, or the like; Arrangements therefor; Submerged sluice gates
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B8/00—Details of barrages or weirs ; Energy dissipating devices carried by lock or dry-dock gates
- E02B8/06—Spillways; Devices for dissipation of energy, e.g. for reducing eddies also for lock or dry-dock gates
Abstract
The invention discloses an overflow gallery system for a high dam step-by-step water retaining and emptying system, which comprises a primary overflow gallery and a final overflow gallery, wherein the high dam step-by-step water retaining and emptying system is arranged in a river channel, the high dam step-by-step water retaining and emptying system comprises n primary gate devices, secondary gate devices and emptying gate devices which are sequentially arranged along the water flow direction of the river channel, each primary gate device comprises a maintenance gate well and a working gate well which are arranged in parallel, each secondary gate device comprises an accident gate well, the primary overflow gallery is communicated between two adjacent primary gate devices, and the final overflow gallery is communicated with the front river channel and the rear river channel of each emptying gate device. By adopting the technical scheme of the invention, the water head is gradually reduced through the gate devices at all levels, and the excessive water flow is discharged in time through the overflow galleries at all levels, so that the gate devices at all levels are prevented from bearing excessive water pressure, the devices and facilities in the step-by-step water-retaining and emptying system of the high dam are protected, and the safe and stable operation of the system is ensured.
Description
Technical Field
The invention belongs to the technical field of hydraulic and hydroelectric engineering, and particularly relates to an overflow gallery system for a high dam step-by-step water retaining and emptying system.
Background
The safe emptying of a high dam large reservoir is a difficult problem which is mainly concerned by the current hydroelectric engineering. At present, an emptying system which can empty the high dam warehouse to any depth by using a mode of sharing the total water head by using a multi-stage gate appears. Chinese patent publication No. CN105220659B discloses an ultra-deep water retaining and emptying system for high dam and large reservoir and an operation method thereof. The system solves the problem of the existing engineering and meets the emptying requirement of the high dam and the large warehouse. However, the structure still has the following disadvantages: the starting point of the final stage gallery in the system is connected with the accident gate shaft, and the tail end of the final stage gallery is directly communicated with the downstream of the final stage radial gate system through the gallery shaft, so that the structural applicability is poor, and particularly when the distance between the final stage radial gate system and the accident gate is far, the engineering quantity is large, and the construction difficulty is increased.
Disclosure of Invention
In order to solve the technical problem, the invention provides an overflow gallery system for a high dam step-by-step water retaining and emptying system.
The invention is realized by the following technical scheme.
The invention provides an overflow gallery system for a high dam step-by-step water retaining emptying system, which comprises a primary overflow gallery and a final overflow gallery, wherein a tunnel communicated with a water source is excavated in the ground, the high dam step-by-step water retaining emptying system is arranged above the tunnel, the high dam step-by-step water retaining emptying system comprises n primary gate devices, a secondary gate device and an emptying gate device which are sequentially arranged above the tunnel in parallel along the water flow direction of the tunnel, the tunnel positioned at the upstream of the secondary gate device is a pressure section A, the tunnel positioned between the secondary gate device and the emptying gate device is a pressure section B, the tunnel positioned at the downstream of the emptying gate device is a non-pressure section, the primary gate device comprises an access lock well and a working lock well which are sequentially arranged in parallel along the water flow direction in the tunnel, and the secondary gate device comprises an accident lock well, dispose corresponding liftable gliding maintenance gate, work gate and accident gate within overhaul lock well, work lock well and the accident lock well respectively, along rivers flow direction in the tunnel, the work gate within the ith primary gate device passes through primary overflow corridor and the overhaul gate intercommunication within the (i + 1) th primary gate device, wherein, i is less than or equal to n, it passes through to have the section B last stage overflow corridor with the non-pressure section intercommunication.
And the working gate in the ith primary gate device is communicated with the maintenance gate in the (i + 1) th primary gate device through the primary overflow gallery, wherein n is more than or equal to 2.
The primary overflow galleries are arranged along the horizontal direction, the arrangement heights of the primary overflow galleries are gradually reduced, and the water level heights of the working lock shafts in the primary gate devices connected with the primary overflow galleries are consistent.
The overflow gallery system for the step-by-step water retaining and emptying system of the high dam further comprises a secondary overflow gallery, wherein a working gate in the last primary gate device is communicated with the pressing section A through the secondary overflow gallery.
The secondary overflow gallery is formed by connecting a horizontal section arranged along the horizontal direction, a vertical shaft section arranged along the vertical direction and a flat pressing section arranged along the vertical direction end to end, the joint of the vertical shaft section and the flat pressing section is also communicated with the accident lock well through an additional overflow gallery, and the arrangement height of the horizontal section is consistent with the height of a control water level in the last primary gate device.
The cross section of the horizontal section is one of rectangle, horseshoe shape, round shape or city portal shape.
The number of primary gate devices is at least 1.
The last stage overflow corridor is formed by arranging a vertical front section along the vertical direction, a flat top section above the emptying gate device and a vertical rear section arranged along the vertical direction in sequence in an end-to-end manner, the vertical front section is communicated with the pressure section B, the vertical rear section is communicated with the non-pressure section, and the flat top section of the last stage overflow corridor is arranged to have a height consistent with the elevation of the control water level of the emptying gate device.
The cross section of the vertical front section, the flat top section and the vertical rear section is one of rectangle, horseshoe shape, round shape or city portal shape similar to city portal.
The joint of the vertical rear section and the non-pressure section is positioned at the top of the non-pressure section.
The invention has the beneficial effects that: by adopting the technical scheme of the invention, when water flows through the primary gate devices at all levels, the pressure in the water flow is gradually reduced, so that the impact of the water flow on the primary gate devices, the secondary gate devices and the emptying gate devices at all levels is weakened, and the safe and stable operation of the gate devices or facilities at all levels is protected.
Drawings
FIG. 1 is a front view of the present invention;
fig. 2 is a top view of the present invention.
In the figure: 1-primary sluice means, 2-secondary sluice means, 3-emptying sluice means, 5-tunnel, 6-primary overflow corridor, 7-final overflow corridor, 8-secondary overflow corridor, 9-supplemental overflow corridor, 11-emptying lock chamber, 12-power plant, 13-emptying sluice, 102-service lock well, 103-service lock well, 104-service lock gate, 105-service lock gate, 202-accident lock well, 203-accident lock gate, 501-pressure section a, 502-pressure section B, 503-non-pressure section, 701-vertical front section, 702-flat top section, 703-vertical back section, 801-horizontal section, 802-vertical section, 803-flat pressure section.
Detailed Description
The technical solution of the present invention is further described below with reference to the accompanying drawings, but the scope of the claimed invention is not limited thereto.
As shown in fig. 1 to 2, the system comprises a primary overflow gallery 6 and a final overflow gallery 7, a tunnel 5 communicated with a water source is excavated in the ground, a high dam step-by-step water retaining emptying system is arranged on the tunnel 5, the high dam step-by-step water retaining emptying system comprises n primary gate devices 1, secondary gate devices 2 and emptying gate devices 3 which are sequentially arranged above the tunnel 5 in parallel along the water flow direction of the tunnel 5, a tunnel 5 positioned at the upstream of the secondary gate device 2 is a pressure section a501, a tunnel 5 positioned between the secondary gate device 2 and the emptying gate device 3 is a pressure section B502, a tunnel 5 positioned at the downstream of the emptying gate device 3 is a pressure section 503, the primary gate device 1 comprises an access shaft 102 and a working access shaft 103 which are sequentially arranged in parallel along the water flow direction in the tunnel 5, the secondary gate device 2 comprises an accident gate shaft 202, the access shaft 102, the working access shaft 103 and the inspection shaft 202 are respectively provided with corresponding access gates 104 which can slide up and down, The working gate 105 and the accident gate 203 are communicated with the maintenance gate 104 in the (i + 1) th primary gate device 1 through the primary overflow gallery 6 along the flow direction of water flow in the tunnel 5, wherein i is less than or equal to n, and the pressure section B502 is communicated with the non-pressure section 503 through the final overflow gallery 7.
By adopting the technical scheme of the invention, when water flows through the primary gate devices at all levels, the pressure in the water flow is gradually reduced, so that the safe and stable operation of the gate devices or facilities at all levels is protected, and on the other hand, when the water flow exceeds the bearing limit of the gate devices or facilities at all levels, the excessive water flow is discharged through the primary overflow gallery, the secondary overflow gallery or the final overflow gallery, so that the water pressure balance among the gate devices or facilities at all levels is maintained, the devices or facilities are protected, and the operation safety of the step-by-step water retaining and emptying system of the high dam is ensured.
Further, the working gate 105 inside the ith primary gate device 1 is communicated with the service gate 104 inside the (i + 1) th primary gate device 1 through the primary overflow gallery 6, wherein n is more than or equal to 2. The primary overflow gallery 6 is arranged in a horizontal direction at a height corresponding to the height of the water level between the primary gate devices 1 connected to both ends thereof.
In addition, the overflow gallery system for the high dam stage-by-stage water-retaining emptying system further includes a secondary overflow gallery 8 in which the working gate 105 inside the last primary gate device 1 is communicated with the pressing section a501 through the secondary overflow gallery 8.
Further, the secondary overflow corridor 8 is composed of a horizontal section 801 arranged along the horizontal direction, a vertical shaft section 802 arranged along the vertical direction and a flat pressing section 803 arranged along the vertical direction which are connected together end to end, and the joint of the vertical shaft section 802 and the flat pressing section 803 is also communicated with the accident lock well 202 through an supplementary overflow corridor 9. The horizontal section 801 of the secondary overflow gallery 8 has a height corresponding to the height of the control water level in the last primary gate device 1 to which it is connected, and the supplemental overflow gallery 9 has a height corresponding to the height of the control water level of the emptying gate device 3. The horizontal section 801 has a cross-section that is one of rectangular, horseshoe, circular, or an urban portal similar to an urban gate.
Further, the number of the primary gate devices 1 is at least 1. When the number of primary gate devices 1 is 1, then the overflow gallery system may only be provided with a final overflow gallery 7 or a secondary overflow gallery 8.
The final overflow gallery 7 is composed of a vertical front section 701 arranged along the vertical direction, a flat top section 702 arranged above the emptying gate device 3 along the horizontal direction and a vertical rear section 703 arranged along the vertical direction, which are sequentially connected end to end, wherein the vertical front section 701 is communicated with a pressure section B502, and the vertical rear section 703 is communicated with a non-pressure section 503. The flat top section 702 of the final-stage overflow gallery 7 is arranged at a height corresponding to the height of the supplemental overflow gallery 9. The cross section of the vertical front section 701, the flat top section 702 and the vertical rear section 703 is one of a rectangle, a horseshoe shape, a circle or an urban door opening shape similar to an urban door. The joint of the vertical rear section 703 and the non-pressure section 503 is positioned at the bottom of the non-pressure section. By adopting the technical scheme of the invention, the overflow galleries at all levels can effectively discharge excessive water flow, so that the gate devices or facilities at all levels are prevented from being impacted by larger water flow, the gate devices or facilities at all levels are protected, and the safety and stability of the whole system are ensured.
In addition, the emptying gate device 3 comprises an emptying gate chamber 11 arranged on the tunnel 5, a power device 12 is arranged in the emptying gate chamber 11, an emptying gate 13 is arranged at the joint of the emptying gate chamber 11 and the tunnel 5, and the emptying gate 13 is connected with the power device 12, so that the emptying gate chamber 11 and the tunnel 5 can be communicated or blocked. The evacuation gate 13 is arc-shaped.
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 (9)
1. The utility model provides an overflow corridor system that is used for high dam manger plate unloading system step by step which characterized in that: including elementary spillway corridor (6) and last stage spillway corridor (7), it has tunnel (5) with the water source intercommunication to excavate within the ground, be provided with high dam step by step manger plate unloading system on tunnel (5), high dam step by step manger plate unloading system includes along tunnel (5) rivers flow direction arrange side by side in proper order n elementary gate device (1), secondary gate device (2) and evacuation gate device (3) on tunnel (5), be located tunnel (5) of secondary gate device (2) upper reaches for pressing section A (501), be located tunnel (5) between secondary gate device (2) and evacuation gate device (3) for pressing section B (502), be located evacuation gate device (3) low reaches tunnel (5) for non-pressure section (503), elementary gate device (1) includes along in tunnel (5) rivers flow direction in proper order side by side inspection shaft (102) and working floodgate (103) of arranging, the secondary gate device (2) comprises an accident gate well (202), corresponding liftable and slidable maintenance gates (104), working gates (105) and accident gates (203) are respectively arranged in the maintenance gate well (102), the working gate well (103) and the accident gate well (202), along the water flow direction in the tunnel (5), the working gates (105) in the ith primary gate device (1) are communicated with the maintenance gates (104) in the (i + 1) th primary gate device (1) through a primary overflow gallery (6), wherein i is less than or equal to n, the pressure section B (502) is communicated with the non-pressure section (503) through the final stage overflow gallery (7), the overflow gallery system for the high dam step-by-step water retaining and emptying system also comprises a secondary overflow gallery (8), wherein the working sluice (105) inside the last primary sluice means (1) is in communication with the hold-down section A (501) via a secondary overflow gallery (8).
2. The overflow gallery system for the progressive high dam water-retaining emptying system of claim 1, wherein: and a working gate (105) in the ith primary gate device (1) is communicated with a maintenance gate (104) in the (i + 1) th primary gate device (1) through a primary overflow gallery (6), wherein n is more than or equal to 2.
3. The overflow gallery system for the progressive high dam water-retaining emptying system of claim 1, wherein: the primary overflow galleries (6) are arranged along the horizontal direction, the arrangement heights of the primary overflow galleries are gradually reduced, and the water level heights of the working lock shafts (103) in the primary gate devices (1) connected with the primary overflow galleries are consistent.
4. The overflow gallery system for the progressive high dam water-retaining emptying system of claim 1, wherein: the secondary overflow gallery (8) is formed by connecting a horizontal section (801) arranged along the horizontal direction, a vertical shaft section (802) arranged along the vertical direction and a flat pressing section (803) arranged along the vertical direction end to end, the joint of the vertical shaft section (802) and the flat pressing section (803) is also communicated with the accident lock well (202) through a supplement overflow gallery (9), and the arrangement height of the horizontal section (801) is consistent with the control water level height in the last primary lock gate device (1).
5. The overflow gallery system for the progressive high dam water-retaining emptying system of claim 4, wherein: the cross section of the horizontal section (801) is one of a rectangle, a horseshoe shape, a circle or an urban portal shape.
6. The overflow gallery system for the progressive high dam water-retaining emptying system of claim 1, wherein: the number of primary sluice devices (1) is at least 1.
7. The overflow gallery system for the progressive high dam water-retaining emptying system of claim 1, wherein: last stage overflow corridor (7) by along vertical direction arrange perpendicular anterior segment (701), along the horizontal direction arrange in flat top section (702) of evacuation gate device (3) top and along vertical direction arrange perpendicular back end (703) in proper order end to end constitute together, erect anterior segment (701) with press section B (502) intercommunication, erect back end (703) with non-pressure section (503) intercommunication, the flat top section (702) of last stage overflow corridor (7) arrange the height and the unanimity of evacuation gate device (3) control water level elevation.
8. The overflow gallery system for a high dam stage-by-stage water-retaining emptying system as claimed in claim 7, wherein: the cross sections of the vertical front section (701), the flat top section (702) and the vertical rear section (703) are one of rectangular, horseshoe-shaped or circular.
9. The overflow gallery system for a high dam stage-by-stage water-retaining emptying system as claimed in claim 7, wherein: the joint of the vertical rear section (703) and the non-pressure section (503) is positioned at the top of the non-pressure section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569927.1A CN109469025B (en) | 2018-12-21 | 2018-12-21 | Overflow gallery system for step-by-step water retaining and emptying system of high dam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811569927.1A CN109469025B (en) | 2018-12-21 | 2018-12-21 | Overflow gallery system for step-by-step water retaining and emptying system of high dam |
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| CN109469025A CN109469025A (en) | 2019-03-15 |
| CN109469025B true CN109469025B (en) | 2021-02-12 |
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| CN201811569927.1A Active CN109469025B (en) | 2018-12-21 | 2018-12-21 | Overflow gallery system for step-by-step water retaining and emptying system of high dam |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110593208B (en) * | 2019-08-30 | 2024-03-19 | 中国电建集团贵阳勘测设计研究院有限公司 | Building structure monitoring system of high dam emptying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201874614U (en) * | 2010-11-15 | 2011-06-22 | 中国水电顾问集团华东勘测设计研究院 | Drainage structure for emptying overhaul of derivation tunnel |
| KR101164573B1 (en) * | 2011-12-07 | 2012-07-10 | 세주티앤씨 주식회사 | Dam pc inspection gallery structure for self-leveling and construction method thereof |
| CN204662388U (en) * | 2015-05-29 | 2015-09-23 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of Diversion Tunnel block head exhaust structure |
| CN204849708U (en) * | 2015-08-07 | 2015-12-09 | 中国水利水电科学研究院 | 200 superelevation dam reservoir unloading hole more than rice |
| CN105220659B (en) * | 2015-08-21 | 2016-08-17 | 中国电建集团贵阳勘测设计研究院有限公司 | A kind of high dam big storehouse ultra-deep layer dash blowdown system and operational approach thereof |
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