CN219410775U - Arrangement structure of dam leakage water collecting well - Google Patents
Arrangement structure of dam leakage water collecting well Download PDFInfo
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- CN219410775U CN219410775U CN202320002995.XU CN202320002995U CN219410775U CN 219410775 U CN219410775 U CN 219410775U CN 202320002995 U CN202320002995 U CN 202320002995U CN 219410775 U CN219410775 U CN 219410775U
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Abstract
The utility model belongs to the technical field of dam drainage systems of hydraulic and hydroelectric engineering, and particularly relates to an arrangement structure of a dam leakage water collecting well. The utility model comprises a water collecting well at the bottom of a dam and drainage ditches at two sides of the dam, wherein water inlet ditches are respectively arranged at two sides of the top of the water collecting well, the water outlet ends of the drainage ditches are communicated with the water inlet ditches, a partition wall is arranged in the position of a dam seam of the dam in an inner cavity of the water collecting well, the partition wall divides the inner cavity of the water collecting well into a first water collecting well and a second water collecting well, the water inlet ditches at two sides of the dam are communicated with the two water collecting wells in one-to-one correspondence through a first water inlet ditch via hole and a second water inlet ditch via hole, the first water inlet ditch via hole and the second water inlet ditch via hole are respectively provided with water inlet gates, and the water inlet ditches at two sides of the dam are communicated through communicating pipes. The first water collecting well and the second water collecting well are independent from each other and are not influenced by deformation of the dam. And during overhaul, water seepage in any one of the water collecting wells can be independently emptied, and single-lattice overhaul is performed, so that the overhaul is safer.
Description
Technical Field
The utility model belongs to the technical field of dam drainage systems of hydraulic and hydroelectric engineering, and particularly relates to an arrangement structure of a dam leakage water collecting well.
Background
In the design work of hydropower stations, the treatment of dam leakage and drainage is one of the key factors for ensuring the normal operation of the dams and the power stations. Dam leakage water collection well water sources come mainly from two parts: 1. the water seepage on the upstream side of the dam enters the water collecting well through the drainage ditch; 2. the water seepage in the mountain connected with the dam enters the water collecting well through the drainage ditch of the drainage hole. In the past, dam leakage water collecting wells of a hydropower station are arranged in a single lattice mode (namely, an integral structure arranged along the width direction of the dam), and long-shaft deep well pumps or submersible pump drainage for the well are arranged in a well chamber. The effective volume of the water collecting well is larger due to the large leakage water quantity, and the leakage water collecting well which is arranged in a single lattice way in the past inevitably spans the parting section of the dam. However, uneven settlement occurs at the parting of the dam after water storage, and the water collecting well is cracked and deformed due to the arrangement of the water collecting well crossing joints. Because the water leakage source continuously flows into the water collecting well, water in the water collecting well cannot be completely pumped out during maintenance, and water inflow at two ends of the water collecting well arranged in a single lattice cannot be cut off on one side, so that the maintenance is inconvenient.
Disclosure of Invention
The utility model aims to solve the technical problems that: the dam leakage water collecting well arrangement structure can improve structural safety and is convenient to overhaul.
The technical scheme adopted for solving the technical problems is as follows: the utility model provides an arrangement structure of dam seepage water collecting well, including the water collecting well that is located the dam bottom and the escape canal that is located the dam both sides, water collecting well top both sides are provided with the inlet channel respectively, the play water end and the inlet channel of escape canal are linked together, the water collecting well inner chamber is provided with the dividing wall in the dam seam place position of dam, the dividing wall separates the water collecting well inner chamber into first water collecting well and second water collecting well, the inlet channel of dam one side communicates with first water collecting well top through first inlet channel via hole, the inlet channel of opposite side communicates with second water collecting well top through second inlet channel via hole, first inlet channel via hole and second inlet channel via hole are furnished with the inlet gate respectively, the inlet channel of dam both sides is linked together through intercommunication pipeline.
In order to facilitate construction and save investment cost, the further preferred scheme is as follows: the communicating pipeline is a steel pipe which is horizontally arranged.
In order to simplify the pipeline valve structure and reduce the possibility of pipeline blockage, a further preferred scheme is as follows: the height of the bottom of the inner cavity of the communicating pipeline is higher than that of the top of the inner cavity of the first water inlet channel via hole and that of the inner cavity of the second water inlet channel via hole.
To reduce the possibility of pipe blockage, a further preferred embodiment is: the two ends of the intercommunication pipeline are respectively provided with a filter grid at the pipe orifice position.
In order to fully utilize the effective volume of the water collecting well, a further preferred scheme is as follows: the partition wall is provided with a water collecting well water passing hole communicated with the first water collecting well and the second water collecting well, and the water collecting well water passing hole is provided with a water collecting well water passing hole gate.
In order to facilitate arrangement of the water pump for maintenance, the further preferred scheme is as follows: the top of the first water collecting well and the top of the second water collecting well are respectively provided with a water pump foundation.
The beneficial effects of the utility model are as follows: first, the separation wall is arranged at the position of the dam seam of the dam in the inner cavity of the water collecting well, and the first water collecting well and the second water collecting well are mutually independent and are not influenced by deformation of the dam. And when overhauling, the corresponding water inlet gate of the collecting well to be overhauled can be closed, and the water leakage on the side can flow into the water inlet channel on the opposite side by using the communicating pipeline and flow into the collecting well with the normal working grid together. The water collecting well to be overhauled is not filled with water any more, accumulated water entering the water collecting well before overhauling can be pumped out through the water pump, no water in the overhauling well is realized, and the overhauling of workers is facilitated. And during overhaul, water seepage in any one of the water collecting wells can be independently emptied, and single-lattice overhaul is performed, so that the overhaul is safer.
Drawings
Fig. 1 is a schematic plan view of the present utility model.
Fig. 2 is a schematic elevation view of A-A of fig. 1.
Fig. 3 is a schematic view of the B-B elevation of fig. 1.
Fig. 4 is a schematic elevation view of fig. 1 from C-C.
The parts in the figure are marked as follows: the water collecting well 1, a water inlet channel 2, a dam seam 3, a dividing wall 4, a first water inlet channel via hole 5, a second water inlet channel via hole 6, a water inlet gate 7, an intercommunication pipeline 8, a water collecting well water passing hole 9, a water collecting well water passing hole gate 10, a drainage ditch 11, a filter grid 12, a water pump foundation 13 and a drainage gallery 14.
Detailed Description
The utility model will be further described with reference to the accompanying drawings and examples.
Referring to fig. 1 to 4, the utility model comprises a water collecting well 1 positioned at the bottom of a dam and drainage ditches 11 positioned at two sides of the dam, wherein water inlet ditches 2 are respectively arranged at two sides of the top of the water collecting well 1, the water outlet ends of the drainage ditches 11 are communicated with the water inlet ditches 2, a partition wall 4 is arranged at the position of a dam seam 3 of the dam in the inner cavity of the water collecting well 1, the partition wall 4 divides the inner cavity of the water collecting well 1 into a first water collecting well and a second water collecting well, the water inlet ditches 2 at one side of the dam are communicated with the top of the first water collecting well through first water inlet ditches through holes 5, the water inlet ditches 2 at the other side are communicated with the top of the second water collecting well through second water inlet ditches through holes 6, water inlet gates 7 are respectively arranged at the water inlet ditches 5 and the second water inlet ditches through communicating pipes 8 at two sides of the dam. The drainage ditch 11 is generally provided with a drainage gallery 14 beside, and the drainage gallery 14 is arranged according to the conventional mode, and is irrelevant to the technical problem to be solved in the application, so that the detailed description is omitted. In the utility model, the water inlet channels 2 are respectively additionally arranged at the positions where the two sides of the water collecting well 1 are connected with the drainage ditches 11, and are used as converging water inlet areas of the dam seepage water collecting well, and the water inlet channels can generally adopt a concrete structure. When overhauling, the corresponding water inlet gate 7 of the collecting well to be overhauled can be closed, and the water leakage on the side can flow into the water inlet channel on the opposite side by using the communicating pipeline 8 and flow into the collecting well of the normal working grid together.
It will be appreciated that even a slight slope of the interconnecting duct 8 will not affect the interconnecting effect of the two. In order to optimize the communication effect, the pipeline uses the least materials, and the preferable scheme is as follows: the communicating pipe 8 is horizontally arranged. For ease of construction, the interconnecting pipe 8 is preferably in the form of a steel pipe.
In order to simplify the pipeline valve structure and reduce the possibility of pipeline blockage, a further preferred scheme is as follows: the height of the bottom of the inner cavity of the communicating pipeline 8 is higher than the height of the top of the inner cavity of the first water inlet channel via hole 5 and the second water inlet channel via hole 6. After the scheme is adopted, a valve is not required to be arranged on the steel pipe, and the steel pipe is always communicated. Because the inner cavity bottom elevation of the intercommunication pipeline 8 is higher than the inner cavity top elevations of the first water inlet channel via hole 5 and the second water inlet channel via hole 6, in normal operation, the water leakage can not flow through the intercommunication pipeline 8, and only can directly flow into the water collecting well 1 from the first water inlet channel via hole 5 and the second water inlet channel via hole 6. The intercommunication pipe 8 only serves as an auxiliary passage for maintenance.
To reduce the possibility of pipe blockage, the preferred scheme is: the two ends of the intercommunication pipe 8 are respectively provided with a filter grid 12. The filter grid 12 may act as a barrier to fine sand. The filter grill 12 is preferably made of stainless steel.
In order to fully utilize the effective volume of the water collecting well, the preferable scheme is as follows: the partition wall 4 is provided with a water collecting well water passing hole 9 for communicating the first water collecting well with the second water collecting well, and the water collecting well water passing hole 9 is provided with a water collecting well water passing hole gate 10. In normal operation, the sump water aperture gate 10 is in an open state such that the water levels of the first and second sump remain the same. When overhauling, the water collecting well water passing hole gate 10 is closed, so that the water collecting well to be overhauled is not fed any more.
For the water pump of convenient arrangement maintenance usefulness, the preferred scheme is: the top of the first water collection well and the top of the second water collection well are provided with a water pump foundation 13, respectively.
In a preferred embodiment of the utility model, the workflow is as follows:
(1) Normal working conditions:
when the seepage water collecting well works normally, dam body seepage water enters the water inlet channels 2 at two sides through the drainage channels 11 at two sides, the water inlet gates 7 of the water inlet channels 2 at two sides are opened, the seepage water flows into the water collecting well 1 at the lower part through the water inlet channel water holes, the water collecting well water hole gates 10 are in an opened state, and two grids of seepage water are communicated. Since the height of the bottom of the inner cavity of the communicating pipe 8 is higher than the height of the top of the inner cavity of the first water inlet channel via hole 5 and the second water inlet channel via hole 6, when the water inlet gate 7 of the water inlet channel 2 at both sides is opened, the water leakage only enters the water collecting well 1 through the water passing holes of the water inlet channel 2.
(2) Overhauling working conditions:
when the leakage water collecting well is overhauled, the single-grid water collecting well can be overhauled one by one.
When overhauling, the water inlet gate 7 of the water inlet hole of the water collecting well water inlet channel end of the grid to be overhauled and the water inlet gate 10 of the water collecting well water inlet hole of the water collecting well are closed, and the water inlet gate 7 of the water inlet hole of the water inlet channel end of the normal working grid is opened. Because the water leakage is still continuously fed into the two sides of the dam during maintenance, the water level of the water inlet channel 2 at the side (namely the maintenance side) of the water inlet gate 7 is closed and continuously rises, when the water seepage level in the water inlet channel 2 at the maintenance side reaches the bottom elevation of the communicating pipeline 8, the water leakage enters the water inlet channel 2 at the other side which normally works through the communicating pipeline 8, and then enters the water collecting well 1 which normally works through the water hole opened by the gate. The water collecting well of the overhaul lattice is not filled with water any more, and accumulated water entering the water collecting well of the overhaul lattice before overhaul can be pumped out through the water pump, so that no water exists in the overhaul well, and the overhaul of workers is facilitated.
Claims (6)
1. Arrangement structure of dam seepage sump pit, including being located sump pit (1) of dam bottom and being located escape canal (11) of dam both sides, its characterized in that: the water inlet channel (2) is respectively arranged on two sides of the top of the water collecting well (1), the water outlet end of the drainage channel (11) is communicated with the water inlet channel (2), a partition wall (4) is arranged at the position of a dam seam (3) of a dam in the inner cavity of the water collecting well (1), the inner cavity of the water collecting well (1) is partitioned into a first water collecting well and a second water collecting well by the partition wall (4), the water inlet channel (2) on one side of the dam is communicated with the top of the first water collecting well through a first water inlet channel via hole (5), the water inlet channel (2) on the other side of the dam is communicated with the top of the second water collecting well through a second water inlet channel via hole (6), a water inlet gate (7) is respectively arranged on the first water inlet channel via hole (5) and the second water inlet channel via hole (6), and the water inlet channels (2) on two sides of the dam are communicated through an intercommunication pipeline (8).
2. The dam leakage and water collection well arrangement of claim 1, wherein: the communicating pipeline (8) is a steel pipe which is horizontally arranged.
3. The dam leakage and water collection well arrangement of claim 2, wherein: the height of the bottom of the inner cavity of the communicating pipeline (8) is higher than the height of the top of the inner cavity of the first water inlet channel via hole (5) and the second water inlet channel via hole (6).
4. The dam leakage and water collection well arrangement of claim 2, wherein: the pipe orifices at the two ends of the communicating pipe (8) are respectively provided with a filter grid (12).
5. The dam leakage and water collection well arrangement of claim 1, wherein: the partition wall (4) is provided with a water collecting well water passing hole (9) for communicating the first water collecting well with the second water collecting well, and the water collecting well water passing hole (9) is provided with a water collecting well water passing hole gate (10).
6. A dam leakage water collection well arrangement according to any one of claims 1 to 5 wherein: the top of the first water collecting well and the top of the second water collecting well are respectively provided with a water pump foundation (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320002995.XU CN219410775U (en) | 2023-01-03 | 2023-01-03 | Arrangement structure of dam leakage water collecting well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320002995.XU CN219410775U (en) | 2023-01-03 | 2023-01-03 | Arrangement structure of dam leakage water collecting well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219410775U true CN219410775U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320002995.XU Active CN219410775U (en) | 2023-01-03 | 2023-01-03 | Arrangement structure of dam leakage water collecting well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219410775U (en) |
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2023
- 2023-01-03 CN CN202320002995.XU patent/CN219410775U/en active Active
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