CN220704465U - Structure for releasing ecological flow by utilizing catchment of intercepting ditch - Google Patents
Structure for releasing ecological flow by utilizing catchment of intercepting ditch Download PDFInfo
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- CN220704465U CN220704465U CN202320884187.0U CN202320884187U CN220704465U CN 220704465 U CN220704465 U CN 220704465U CN 202320884187 U CN202320884187 U CN 202320884187U CN 220704465 U CN220704465 U CN 220704465U
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- catchment
- ecological flow
- flow
- pool
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 41
- 238000007599 discharging Methods 0.000 claims description 16
- 238000009412 basement excavation Methods 0.000 claims description 3
- 238000009933 burial Methods 0.000 claims description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000004567 concrete Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 239000011435 rock Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009372 pisciculture Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Abstract
The utility model discloses a structure for releasing ecological flow by utilizing catchment of a water intercepting ditch. The scheme comprises the following steps: arranging an ecological pool at the left bank or the right bank of the dam, wherein the specific size can be determined according to the volume required by continuous 48-96 hours of engineering to discharge ecological flow, and the depth is 3-6 m; introducing the converging water in the intercepting ditch of the highway of the annular warehouse into a pool, arranging an ecological flow buried pipe and a control valve to be connected with a dam foot drainage ditch of the dam, wherein the pipe diameter of the buried pipe is generally 0.1-0.3 m, and the valve diameter DN is 100-DN 300mm and is determined according to the discharge flow; and arranging a reservoir buried pipe in the ecological water tank, leading the reservoir buried pipe to the vicinity of the dead water level in the reservoir along the reservoir bank, and connecting the reservoir buried pipe with the submersible pump. The utility model provides stable ecological flow to the downstream of the dam by utilizing the catchment of the intercepting ditches to discharge the ecological flow and pumping the ecological flow to the water pool through the buried pipes in the reservoir when the catchment is insufficient or no catchment exists.
Description
Technical Field
The utility model relates to the field of water and electricity hydraulic engineering, in particular to a method for discharging ecological flow by utilizing catchment of a water interception ditch.
Background
Because the upstream water source is blocked after the reservoir is built, the short-term flow interruption phenomenon occurs in a river reach in a certain range at the downstream of the dam, and the current environmental protection requirement is to continuously discharge ecological flow at the downstream of the dam, wherein the discharge amount is generally determined according to 10% of the average flow for many years.
In engineering practice, the diversion tunnel is generally arranged to meet the construction diversion of the dam, and meanwhile, measures such as pipe burying or dam foundation pipe burying in the diversion tunnel plug are adopted to meet the requirement of ecological flow discharge. But there are the following problems to do so:
(1) When the area of the upstream river basin is smaller, the investment cost of the diversion tunnel arranged in the reservoir is too high; the pipe diameter of the ecological flow pipe is generally only tens of centimeters, and the inlet section of the buried pipe in the diversion tunnel plug or the buried pipe of the dam foundation is easy to cause blockage;
(2) If the dam foundation of the earth-rock dam is buried, the anti-crack concrete needs to be backfilled after the dam foundation is grooved and buried, and anti-crack steel bars need to be arranged, so that the construction is very troublesome;
(3) The discharged water is completely extracted from the reservoir, which is uneconomical and reasonable.
Therefore, how to utilize the catchment of the intercepting ditch to discharge ecological flow rate and pump water from the reservoir as little as possible, thereby achieving the purpose of economy and rationality, and being an important technology in water and electricity hydraulic engineering.
Disclosure of Invention
The utility model aims to solve the problems that: the ecological flow is discharged by means of the catchment of the intercepting ditch, the ecological flow is discharged by means of measures such as pipe burying in a diversion tunnel plug or dam foundation pipe burying, investment cost is high, the blocking is easily caused in an inlet section, the construction of the dam foundation pipe burying is troublesome, and the discharged water volume is completely extracted from a reservoir and is uneconomical.
In order to achieve the purpose of the utility model, the technical scheme adopted by the utility model is as follows:
the utility model provides an utilize structure of intercepting ditch catchment release ecological flow which characterized in that: the ecological water pool is connected with a dam foot drainage ditch, and the ecological flow burial pipe is provided with an ecological flow control valve.
On the basis of adopting the technical scheme, the utility model can also adopt the following further technical scheme or use the technical schemes in combination:
the ecological pool is also provided with a reservoir buried pipe which is led to the vicinity of the dead water level in the reservoir and is connected with the submersible pump.
The specific size of the ecological pool is determined according to the volume required by engineering continuous 48-96 hours for discharging ecological flow, and the depth is 3-6 m.
The pipe diameter of the ecological flow embedded pipe is 0.1-0.5 m; the ecological flow control valve comprises an accident valve and a working valve, and the valve diameter is DN 100-DN 300mm.
The intercepting ditches are arranged on the outer side of the circular warehouse highway and used for collecting excavation slopes, natural slopes and road surface catchments of the circular warehouse highway; size width x height = 40 x 40 cm-100 x 100cm.
The longitudinal slope of the intercepting ditch is set to be 0.5% -1%, and the intercepting ditch is inclined to the ecological pool and is smoothly connected with the ecological pool, so that catchment in the intercepting ditch is led to the ecological pool.
The road of the circular warehouse is provided with a drainage slope with the gradient larger than 1 percent, and the drainage slope is inclined to the intercepting ditch.
And a plurality of converging ditches are arranged on the slope surface of the excavated side slope and the natural side slope and led to the intercepting ditches.
The top elevation of the ecological pool is higher than the bottom elevation of the intercepting ditch, and the bottom elevation of the ecological pool is lower than the bottom elevation of the intercepting ditch.
Compared with the prior art, the utility model has the following advantages:
1. the problems that the inlet section of the buried pipe in the diversion tunnel plug or the buried pipe of the dam foundation is easy to cause the blockage, the dam foundation is dug, the crack-resistant concrete is backfilled and the like are avoided.
2. The water source converged above the circular warehouse highway is fully utilized, and the slope, the natural slope and the highway pavement converged water are excavated above the circular warehouse highway, so that the purpose of economy and rationality is achieved. When the water is collected in the intercepting ditch, ecological flow is discharged by utilizing the collected water; when the flow collection rate is insufficient or no flow collection water exists, the water is pumped to the water tank by the submerged pump buried near the dead water level of the reservoir, and the operation is convenient.
3. The capacity of the ecological pool can be comprehensively considered in combination with the greening watering requirement of the dam crest platform.
4. And the factors of convenient construction are fully considered. The construction method and the technical means of the ecological pool, the buried pipe provided with the submerged pump and the valve are mature, and the working quality can be ensured.
Drawings
Fig. 1 is a plan view of a structure for discharging an ecological flow using a catchment.
Fig. 2 is a cross-sectional view A-A of fig. 1.
Fig. 3 is a B-B cross-sectional view of fig. 1.
Detailed Description
In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described with reference to fig. 1 to 3 and examples. It is to be understood, however, that the drawings are designed solely for the purposes of illustration and not as a definition of the limits of the utility model; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 1 to 3, in this embodiment, a dam is exemplified as an earth-rock dam. The structure for discharging ecological flow by utilizing catchment of a water intercepting ditch in the water conservancy project provided by the utility model comprises an ecological pool 4 arranged at the left bank or right bank gentle part of a dam 10, wherein the specific size can be determined according to the volume required by continuously discharging ecological flow for 48-96 hours (2-4 days) of the project, and the general depth is preferably 3-6 m.
The structure also comprises a water interception ditch 1 arranged along the circular warehouse highway 2, wherein the water interception ditch 1 is communicated with the ecological pool 4 so as to lead the inner converging water into the ecological pool 4. The ecological pool 4 is provided with an ecological flow buried pipe 6 at the bottom, the ecological flow buried pipe 6 is connected with a dam foot drainage ditch 5, and the ecological flow buried pipe 6 is provided with an ecological flow control valve 7. The pipe diameter of the ecological flow buried pipe 6 is generally 0.1-0.5 m, and is determined according to the discharge flow. In addition, a reservoir pipe 8 can be arranged to be led to the vicinity of the dead water level in the reservoir and connected to a submersible pump 9.
Wherein, for the intercepting ditches 1, the intercepting ditches are arranged on the outer side of the circular warehouse highway 2 and collect excavation slopes, natural slopes and circular warehouse highway pavement catchments. The longitudinal slope of the intercepting ditch is set to be 0.5% -1% and is inclined to the ecological pool; the typical dimensions of the intercepting ditches are wide x high = 40 x 40cm to 100 x 100cm, specifically can be determined according to the size of the confluence area, the large water tank is smoothly connected with the ecological water tank to guide the catchment in the intercepting ditch to the ecological water tank.
For the road 2 with a circular warehouse, the width of the road surface is 4-8 m, a drainage slope with the gradient larger than 1% can be arranged, and the drainage slope is arranged on the water intercepting ditch 1 on the mountain side of the road.
Wherein, for converging ditch 3, a plurality of converging ditches are arranged on the slope surface of the excavated side slope and the natural side slope, and the converging ditches are connected with the intercepting ditches in sequence to lead the converging water into the intercepting ditches. The general dimensions of wide x high=40 x 40cm to 80 x 80cm, which can be specifically determined according to the size of the confluence area.
Wherein for an ecological pool 4, the pool top elevation is higher than the bottom elevation of the intercepting ditch 1, and the pool bottom elevation is lower than the bottom elevation of the intercepting ditch 1. The bottom and the side walls of the pool are poured with reinforced concrete bottom plates and slope sticking, the thickness is generally 0.3-1.0 m, the concrete structure is reinforced, and the top is provided with anti-falling steel cover plates and protective railings. The concrete size of the water tank can be determined according to the volume required by engineering continuous 48-96 hours (2-4 days) for discharging ecological flow, and the water tank can be comprehensively considered in combination with the greening and watering requirements of the dam crest platform when necessary. For convenient construction, the depth is preferably 3-6 m. According to the requirements of the engineering relief ecological flow, the pool can be arranged at one end of the dam head or at two dam heads of the dam.
For the dam foot drainage ditch 5, the general size is wide=40×40 cm-80×80cm, and can be determined according to engineering specific conditions.
Wherein for the ecological flow control valve 7 the following can be used: 2 ball valves (or 1 ball valve and 1 cone valve) which are horizontally arranged are arranged at the outlet of the ecological flow buried pipe 6, the front valve is an accident valve, the rear valve is a working valve, and the full-opening and full-closing operation is performed. The diameters of the two sets of valves are generally DN 100-DN 300mm, the nominal pressure is 1MPa, and the two sets of valves are determined according to the discharge flow.
Wherein the buried pipe 8 is near the side buried pipe of the reservoir and is led to the vicinity of the dead water level. The diameter of the concrete buried pipe is determined according to the reference flow, generally DN 100-DN 300mm, and the nominal pressure is 1MPa.
Wherein the submersible pump 9 is arranged near the dead water level in the reservoir and is connected with the reservoir buried pipe 8. The specific model of the submersible pump is determined according to the lift, the pumping flow and the like.
Wherein for the dam 10, it is typically a concrete gravity dam, arch dam or earth-rock dam.
The hydraulic engineering building for water storage and water flow regulation can be used for irrigation, power generation, flood control and fish farming for the reservoir 11.
Based on the description of the utility model and the drawings, a person skilled in the art can easily install or use the method for discharging ecological flow by utilizing the catchment of the intercepting ditches, and can produce the positive effects described in the utility model.
Unless specifically stated otherwise, in the present utility model, if the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, they are merely for convenience in description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, so that the terms describing the orientation or positional relationships in the present utility model are used for illustration only and are not to be construed as limitations of the present patent, and it is possible for those skilled in the art to understand the specific meanings of the terms described above in conjunction with the drawings according to circumstances.
Unless specifically stated or limited otherwise, the terms "disposed," "sandwiched," and "connected" herein are to be construed broadly, e.g., they may be fixed, they may be removably, or they may be integrally connected; can be directly connected, can be indirectly connected through an intermediate medium, and can also be communicated with the inside of two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any simple modification, equivalent variation, etc. of the above embodiment according to the technical matter of the present utility model fall within the scope of the present utility model.
Claims (9)
1. The utility model provides an utilize structure of intercepting ditch catchment release ecological flow which characterized in that: the ecological water pool is connected with a dam foot drainage ditch, and the ecological flow burial pipe is provided with an ecological flow control valve.
2. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the ecological pool is also provided with a reservoir buried pipe which is led to the vicinity of the dead water level in the reservoir and is connected with the submersible pump.
3. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the specific size of the ecological pool is determined according to the volume required by engineering continuous 48-96 hours for discharging ecological flow, and the depth is 3-6 m.
4. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the pipe diameter of the ecological flow embedded pipe is 0.1-0.5 m; the ecological flow control valve comprises an accident valve and a working valve, and the valve diameter is DN 100-DN 300mm.
5. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the intercepting ditches are arranged on the outer side of the circular warehouse highway and used for collecting excavation slopes, natural slopes and road surface catchments of the circular warehouse highway; size width x height = 40 x 40 cm-100 x 100cm.
6. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the longitudinal slope of the intercepting ditch is set to be 0.5% -1%, and the intercepting ditch is inclined to the ecological pool and is smoothly connected with the ecological pool, so that catchment in the intercepting ditch is led to the ecological pool.
7. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the road of the circular warehouse is provided with a drainage slope with the gradient larger than 1 percent, and the drainage slope is inclined to the intercepting ditch.
8. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: and a plurality of converging ditches are arranged on the slope surface of the excavated side slope and the natural side slope, and are connected with the intercepting ditches in sequence to guide the catchments into the intercepting ditches.
9. A structure for discharging an ecological flow using a catchment according to claim 1, characterized in that: the top elevation of the ecological pool is higher than the bottom elevation of the intercepting ditch, and the bottom elevation of the ecological pool is lower than the bottom elevation of the intercepting ditch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320884187.0U CN220704465U (en) | 2023-04-19 | 2023-04-19 | Structure for releasing ecological flow by utilizing catchment of intercepting ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320884187.0U CN220704465U (en) | 2023-04-19 | 2023-04-19 | Structure for releasing ecological flow by utilizing catchment of intercepting ditch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220704465U true CN220704465U (en) | 2024-04-02 |
Family
ID=90440060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320884187.0U Active CN220704465U (en) | 2023-04-19 | 2023-04-19 | Structure for releasing ecological flow by utilizing catchment of intercepting ditch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220704465U (en) |
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2023
- 2023-04-19 CN CN202320884187.0U patent/CN220704465U/en active Active
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