CN110714436A - Retaining system of check dam - Google Patents
Retaining system of check dam Download PDFInfo
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- CN110714436A CN110714436A CN201911122072.2A CN201911122072A CN110714436A CN 110714436 A CN110714436 A CN 110714436A CN 201911122072 A CN201911122072 A CN 201911122072A CN 110714436 A CN110714436 A CN 110714436A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 234
- 238000003860 storage Methods 0.000 claims abstract description 30
- 238000004062 sedimentation Methods 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims description 15
- 238000010521 absorption reaction Methods 0.000 claims description 11
- 238000011144 upstream manufacturing Methods 0.000 claims description 10
- 239000003673 groundwater Substances 0.000 abstract 1
- 239000013049 sediment Substances 0.000 description 19
- 239000002689 soil Substances 0.000 description 7
- 239000011248 coating agent Substances 0.000 description 5
- 238000000576 coating method Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000004746 geotextile Substances 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000012271 agricultural production Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B5/00—Artificial water canals, e.g. irrigation canals
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
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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
-
- 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
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B11/00—Arrangements or adaptations of tanks for water supply
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/04—Methods or installations for obtaining or collecting drinking water or tap water from surface water
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Abstract
The invention relates to a retaining system of a check dam. The water storage system of the silt dam comprises a dam body and a stilling well, wherein a plurality of water discharge ports which are arranged at intervals up and down are arranged on the stilling well, and the bottom of the stilling well is communicated with a water discharge channel; a plurality of sedimentation layer water collection horizontal pipes are arranged in the upper sedimentation layer of the dam body and communicated with the stilling well so as to discharge collected water into the stilling well; the dam body downstream is equipped with the cut-off canal, the cut-off canal is equipped with the horizontal pipe of cut-off canal catchment, cut-off canal catchment has horizontal pipe hole of cut-off canal catchment on the horizontal pipe of cut-off canal catchment, can discharge the intraformational water of siltation as soon as possible, reduce the intraformational ground water level of siltation, discharge the water of siltation and the clear water that the check-up dam of siltation downstream through the stilling well simultaneously, downstream is through cut-off canal and water collection well stable undercurrent water in the ditch channel fully collect and utilize, also can collect and utilize through reservoir under the dam, can fully utilize water resource and the clear water that the check-up dam of.
Description
Technical Field
The invention relates to a retaining system of a check dam.
Background
The method is characterized in that the loess plateau area is dry and deficient in water, rainfall is mainly concentrated in rainy seasons, the rainfall in rainy seasons easily forms flood, the erosion of water and soil is serious, the siltation dam is an effective measure for controlling water and soil loss and improving agricultural production conditions in the loess plateau area, the siltation dam has the functions of blocking mud, storing water, relieving flood and the like, the siltation dam is generally used for blocking sand and storing water in the initial building stage, the evaporation loss of the stored clear water is large, and the clear water cannot be fully utilized; in addition, with long-term production and operation, when the reservoir capacity is basically full, a dam, namely a silting layer of a silt dam, is formed. The structure of the dam body granules of the silt dam is good, the porosity is high, the sponge body is equivalent to the water stored in the sponge body to form a soil reservoir, and the water storage and reduction effects are obvious. The redundant loose siltation layer of the downstream river of the silt dam is mainly formed, runoff is difficult to form in a field with rainfall below 50mm, and underground underflow is formed by excessive infiltration. Liu Soft E, Han Yufeng and so on in the water conservancy development research published in the title of 'dam cellar combined storage development and utilization of arid mountain area flood resources' propose a scheme of setting water storage facilities such as a cellar in a reservoir area of a siltation dam to develop and utilize the arid mountain area flood resources, and design the structure of the cellar, but the water in a siltation layer of the siltation dam and clear water blocked and stored by the siltation dam can not be fully utilized.
Disclosure of Invention
The invention aims to provide a water storage system of a check dam, which is used for improving the utilization rate of water resources of the check dam.
In order to realize the purpose, the technical scheme of the water storage system of the silt dam is as follows:
the retaining system of check dam includes:
the dam body is provided with a water discharge channel communicated with the upper and lower streams;
the absorption well is arranged at the upper stream of the dam body, a plurality of water discharge ports are arranged on the absorption well at intervals up and down, and the bottom of the absorption well is communicated with the water discharge channel;
the retaining system of check dam still includes:
the sedimentation layer water collection horizontal pipe is used for being arranged in a sedimentation layer at the upstream of the dam body, a sedimentation layer water collection horizontal pipe hole used for collecting water in the sedimentation layer is formed in the upper pipe wall of the sedimentation layer water collection horizontal pipe, and the sedimentation layer water collection horizontal pipe is provided with a plurality of pipes and is communicated with the stilling well so as to discharge the collected water into the stilling well;
the water storage system of the silty dam comprises a reservoir under the dam, wherein the reservoir under the dam is arranged at the downstream of a dam body and is connected with a water discharge channel through a water guide channel for collecting clear water and siltation layer water accumulated in the silty dam, and/or the water storage system of the silty dam comprises an intercepting channel which is arranged at the downstream of the dam body and is arranged along the width direction of a river channel, an intercepting channel water collection horizontal pipe which is arranged in the intercepting channel, an intercepting channel water collection horizontal pipe hole which is used for collecting undercurrent water in the intercepting channel is arranged on the upper pipe wall of the intercepting channel water collection horizontal pipe, a water collection well is arranged at the end part of the intercepting channel, and the water collection well is used for collecting water collected by the intercepting channel water collection.
The invention has the beneficial effects that: according to the water storage system of the silt dam, the sedimentation layer water collection horizontal pipe is arranged in the sedimentation layer at the upstream of the dam body, so that water in the sedimentation layer can be discharged as soon as possible, meanwhile, the water in the sedimentation layer is discharged to the downstream through the stilling well, the water is collected for reuse through the closure canal and the water collection well at the downstream, or the water is collected through the reservoir arranged below the dam at the downstream, so that water resources in the silt dam can be fully utilized.
Further, for the convenience of construction, at least two horizontal siltation layer water collection pipes are arranged in a layered mode from top to bottom to form a horizontal siltation layer water collection pipe group, the horizontal siltation layer water collection pipes in the horizontal siltation layer water collection pipe group are communicated with each other and are located on the upper portion and are communicated with the stilling well through the horizontal siltation layer water collection pipes located on the bottom, in the same horizontal siltation layer water collection pipe group, the horizontal siltation layer water collection pipes on the upper portion do not need to be directly connected with the stilling well, water is collected to the horizontal siltation layer water collection pipes on the bottom and then is discharged into the stilling well, and the workload is reduced during construction.
Furthermore, a water collecting tank is connected to the horizontal sedimentation layer water collecting pipe at the bottom, the water collecting tank is lower than a water discharge port at the lowest position on the stilling well, the water collecting tank is communicated with the stilling well through a siphon pipe, and the siphon pipe penetrates through the water discharge port at the lowest position on the stilling well and extends into the stilling well. The height of the water collecting tank is lower than that of a water outlet at the lowest position on the stilling well, so that a deposited layer water collecting horizontal pipe can be paved to be lower, the water collecting tank is communicated with the stilling well through a siphon pipe, the structure of the stilling well does not need to be changed, the water outlet of the stilling well can be used for the siphon pipe to pass through, and the construction workload is reduced.
Furthermore, at least three horizontal groups of the water collecting pipes of the fouling layers share the same water collecting tank and are distributed in a radiation shape by taking the water collecting tank as the center. An even collection of the water of the sludge layer can be achieved.
Furthermore, in the same sedimentation layer water collection horizontal pipe group, the middle parts of two adjacent upper and lower sedimentation layer water collection horizontal pipes are communicated through a vertical pipe. Prevent the siltation layer catchment and lay down more water of pipe skew time deposit.
Furthermore, the peripheries of the sedimentation layer water collecting horizontal pipe and the closure channel water collecting horizontal pipe are provided with sandstone layers. The water leakage effect is improved, and simultaneously, the water collecting horizontal pipe of the sludge layer is prevented from being blocked by soil.
Further, the length of the cut-off channel is not more than 1/2 of the width of the downstream riverway of the dam body. Preventing excessive closure and destroying the ecological environment.
Furthermore, the height of the horizontal collecting pipe of the intercepting channel is gradually reduced from one end far away from the collecting well to the direction close to one end of the collecting well. Facilitating the rapid flow collection.
Further, an under dam reservoir is upstream of the cut-off channel. Clear water and water of a siltation layer accumulated in the siltation dam can be collected through the reservoir under the dam for primary collection, and then secondary collection is carried out through the closure channel, so that water resources in the siltation dam are utilized more fully.
Drawings
FIG. 1 is a plan view of an embodiment of the dam impoundment system of the present invention;
FIG. 2 is a cross-sectional layout view of a specific embodiment of the retaining system of the check dam of the present invention;
FIG. 3 is a schematic layout of dam body, absorption well and horizontal water collecting pipe of the silt layer of the embodiment of the water storage system of the silt dam of the invention;
FIG. 4 is a schematic view of the structure of the reservoir under the dam of an embodiment of the impoundment system of the silt dam of the present invention;
FIG. 5 is a schematic structural view of a cut channel of an embodiment of the dam impoundment system of the present invention;
FIG. 6 is a schematic structural view of another perspective of a cut-off channel of an embodiment of a dam impoundment system of the present invention;
in the figure: 1-a dam body; 11-a water discharge channel; 2-a sedimentation layer water collection horizontal pipe; 3-a sludge layer; 4-a vertical pipe; 5, a water collecting tank; 6-stilling well; 61-a water outlet; 7-siphon; 8-closure channel; 81-geotextile layer; 9-a horizontal water collecting pipe of the cut-off channel; 10-a water collecting well; 101-a reservoir under a dam; 102-a penstock; 103-trash rack.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
In the specific embodiment of the water storage system of the silt dam, as shown in fig. 1 to 6, the water storage system of the silt dam comprises a dam body 1 of the silt dam, a drainage channel 11 communicated with the upstream and downstream is arranged on the dam body 1, the tail end opening of the drainage channel is a drainage port of the silt dam, a sediment layer 3 is arranged on the upstream of the dam body 1, a sediment layer water collection horizontal pipe 2 is arranged in the sediment layer 3, a sediment layer water collection horizontal pipe hole used for collecting water in the sediment layer 3 is formed in the upper pipe wall of the sediment layer water collection horizontal pipe 2, a water flow groove for flowing the collected water is formed in the inner side of the lower pipe wall of the sediment layer water collection horizontal pipe 2, the sediment layer water collection horizontal pipe 2 is a flower-hole concrete pipe, holes are formed in the upper part 3/4 of the concrete pipe, holes are not formed in the lower part 1/4 of the sediment layer, the hole rate of the upper part 3/4 is 20% ~% (the proportion of the area of the upper part 3/4 to the total area of the upper part 3/4), in order to prevent soil of the sediment layer water collection horizontal pipe 2 from entering the sediment layer, the sediment layer can be filled with sufficient sand layer, and a certain amount of gravel layer of gravel can be formed when the sediment layer is not filled, and the sediment layer is formed, and the sediment layer can be formed by other sediment layer with sufficient sediment layer for water collection.
The horizontal pipe 2 of the coating catchment sets up in groups in this embodiment, sets up three groups in this embodiment, and the upper and lower layering setting of the horizontal pipe 2 of the coating catchment of same group is and the middle part of two adjacent horizontal pipes 2 of coating catchment of upper and lower passes through standpipe 4 intercommunication, and the horizontal pipe 2 of the coating catchment of bottommost is connected with header tank 5, makes the water that each horizontal pipe 2 of coating catchment collected get into header tank 5. The three groups of the sedimentation layer water collecting pipes share the same water collecting tank and are distributed in a radiation shape by taking the water collecting tank as a center, and the water collecting tank 5 in the embodiment is positioned at one end of the sedimentation layer water collecting horizontal pipe 2 at the bottommost layer. The horizontal water collecting pipes of the siltation layers in one group of the horizontal water collecting pipe groups of the siltation layers are parallel to the dam body along the dam body, one group of the horizontal water collecting pipes is perpendicular to the dam body, and the other groups of the horizontal water collecting pipes of the siltation layers and the dam body are arranged at a certain included angle. In other embodiments, the same group of horizontal sludge layer water collecting pipes can be connected end to achieve communication. In other embodiments, the number of groups of the specific sludge layer water collecting horizontal pipes is set according to the requirement, for example, one group or two groups are also possible.
The absorption well 6 is arranged at the upstream of the dam body 1, a plurality of water discharge ports 61 which are arranged at intervals up and down are arranged on the absorption well 6, the bottom of the absorption well 6 is communicated with the water discharge channel 11 on the dam body 1, and water at the upstream of the dam body 1 can be discharged to the downstream through the absorption well 6. The water discharge ports 61 can control the water surface water storage height at the upstream of the dam body 1 according to requirements. The water storage system of the silt dam in the embodiment is suitable for the condition that a certain deposit layer is formed after the silt dam is used, a plurality of water discharge ports on the stilling well are used for discharging open water bodies accumulated in the silt dam, water discharge holes can be used in the early stage of the use of the silt dam, and in the later stage of the use of the silt dam, after the deposit layer reaches a certain height, the water discharge ports on the lower portion are buried by silt, and only the water discharge holes on the upper portion can be used.
Because the drain 61 at the bottommost part of the stilling well 6 is generally higher, and in order to discharge the water in the sediment layer 3 as much as possible, in the embodiment, the height of the sediment layer water collecting horizontal pipe 2 at the bottommost part is lower than the drain 61 at the bottommost part of the stilling well 6, and the height of the water collecting tank 5 is also lower than the drain 61 at the bottommost part of the stilling well 6, in order not to change the structure of the existing stilling well 6, in the embodiment, the water collecting tank 5 is communicated with the stilling well 6 through the siphon pipe 7, and the siphon pipe 7 penetrates through the drain 61 at the bottommost part of the stilling well 6 and enters the stilling well 6. The structure of the stilling well 6 is not changed, and the construction workload is reduced. In other embodiments, the stagnant bottom's accretion layer horizontal pipe height can be higher than the drain hole of stilling well bottommost, and the header tank can be higher than the drain hole setting of stilling well bottommost this moment, can lead the water in the header tank through the straight tube in leading the stilling well can, of course, also can not set up the header tank, directly lead the water in the accretion layer horizontal pipe to the stilling well, and the accretion layer horizontal pipe of catchmenting can not be grouped to set up this moment, and accretion layer horizontal pipe of catchmenting is direct connection to on the stilling well 6.
In loose soil areas, thick loose settled layers are arranged in the river channels, when the water amount is small, water flows can rapidly seep downwards after flowing into the river channels, surface runoff cannot be formed, and underground underflow can be formed to flow downstream along the river channels. The downstream of the dam body 1 is provided with an under-dam reservoir 101 and a cut-off channel 8 arranged in the width direction of the river channel downstream of the under-dam reservoir 101.
The reservoir 101 under the dam is connected with a drainage outlet of the silt dam of the drainage channel 11 through a diversion canal 102 and is used for collecting clear water and silted water accumulated in the silt dam. As shown in fig. 4, the periphery of the reservoir 101 under the dam is provided with a guardrail, and the water inlet is externally provided with a trash rack 103 and a water strainer to ensure clean water inlet.
The downstream slope of the closure canal 8 is provided with a geotextile layer 81 for intercepting the underground undercurrent, the geotextile layer 81 extends into a certain depth relative to an impervious rock stratum to prevent or reduce the downstream permeation of the underground undercurrent, the closure canal 8 is internally provided with a closure canal water collecting horizontal pipe 9, the closure canal water collecting horizontal pipe 9 adopts a drainage concealed pipe or a PVC pipe, the pipe diameter is 0.4m ~ 0.5m, the outside of the pipe is paved with 4cm ~ 8cm and 2cm ~ 4cm gravel filter materials, the outside of the pipe is covered with coarse sand filter water, the uppermost layer is backfilled with original state soil of a river channel.
The intercepting canal water collection horizontal pipe 9 is a water permeable floral pipe, the upper part 2/3 of the intercepting canal water collection horizontal pipe 9 is provided with an intercepting canal water collection horizontal pipe hole, the lower part 1/3 is a water impermeable part to form an intercepting canal water collection tank, one end of the intercepting canal 8 is provided with a water collection well 10 for collecting water flow in the intercepting canal water collection horizontal pipe 9, one end of the intercepting canal water collection horizontal pipe 9 is communicated with the water collection well 10, the other end of the intercepting canal water collection horizontal pipe is provided with a plug for sealing, the height of the intercepting canal water collection horizontal pipe 9 is gradually reduced from one end far away from the water collection well 10 to the direction close to one end of the water collection well 10, and the intercepting canal water collection horizontal pipe 9 in the embodiment inclines towards the water collection well. The water collecting well 10 is arranged on one side of the intercepting canal 8 close to the village and is arranged on one side. In other embodiments, the horizontal collecting pipe of the intercepting channel can also be horizontally arranged; the sump pit also can set up in both sides, is applicable to the condition that the closure canal set up at the river course middle part this moment, and the horizontal pipe of closure canal catchment can the level, also can high both ends low setting in the middle of the centre.
To prevent excessive interception of the river's underflow, the length of the closure channel 8 is equal to half the width of the river. In other embodiments, the length of the cut-off channel may be adjusted according to actual conditions, for example, the length may be greater than half of the width of the river channel or less than half of the width of the river channel, and in extreme cases, the length may also be equal to the width of the river channel.
In order to increase the amount of impoundment, the impoundment system of the silt dam in this embodiment further comprises a reservoir 104 disposed adjacent to the water collection well 10, wherein water is pumped into the reservoir 104 by a suction pump when the amount of water in the water collection well 10 reaches an upper limit. In other embodiments, the reservoir system of the check dam can be provided with an under-dam reservoir or a cut-off channel separately for collecting water.
When the silt dam water storage system is used, water in a silt layer is discharged in time through the horizontal silt layer water collecting pipe, is discharged to the downstream of a dam body through the drainage channel after being discharged through the stilling well, and is collected at the downstream of the dam body through the reservoir below the dam and the horizontal intercepting channel water collecting pipe in the intercepting channel.
The silt dam water storage system realizes local or limited collection and storage of water resources which are discontinuously distributed in time and space and unstable and are collected, stacked storage and efficient utilization of submerged water in a silt dam, converts intermittent and discrete precipitation runoff into a relatively continuous stable water supply system, collects and stores precipitation runoff in a large area and then utilizes the precipitation runoff in a small area to make up for insufficient water supply and provides a certain water source guarantee for production and life in dry areas.
Claims (10)
1. A check dam water storage system comprising:
the dam body is provided with a water discharge channel communicated with the upper and lower streams;
the absorption well is arranged at the upper stream of the dam body, a plurality of water discharge ports are arranged on the absorption well at intervals up and down, and the bottom of the absorption well is communicated with the water discharge channel;
it is characterized in that the retaining system of the check dam further comprises:
the sedimentation layer water collection horizontal pipe is used for being arranged in a sedimentation layer at the upstream of the dam body, a sedimentation layer water collection horizontal pipe hole used for collecting water in the sedimentation layer is formed in the upper pipe wall of the sedimentation layer water collection horizontal pipe, and the sedimentation layer water collection horizontal pipe is provided with a plurality of pipes and is communicated with the stilling well so as to discharge the collected water into the stilling well;
the water storage system of the silty dam comprises a reservoir under the dam, wherein the reservoir under the dam is arranged at the downstream of a dam body and is connected with a water discharge channel through a water guide channel for collecting clear water and siltation layer water accumulated in the silty dam, and/or the water storage system of the silty dam comprises an intercepting channel which is arranged at the downstream of the dam body and is arranged along the width direction of a river channel, an intercepting channel water collection horizontal pipe which is arranged in the intercepting channel, an intercepting channel water collection horizontal pipe hole which is used for collecting undercurrent water in the intercepting channel is arranged on the upper pipe wall of the intercepting channel water collection horizontal pipe, a water collection well is arranged at the end part of the intercepting channel, and the water collection well is used for collecting water collected by the intercepting channel water collection.
2. The water storage system for the silt dam according to claim 1 wherein at least two horizontal pipes for collecting the sludge layer are layered on top of each other to form a horizontal pipe group for collecting the sludge layer, the horizontal pipes for collecting the sludge layer in the horizontal pipe group for collecting the sludge layer are connected to each other and the horizontal pipe for collecting the sludge layer in the upper part is connected to the stilling well through the horizontal pipe for collecting the sludge layer in the bottom part.
3. The water storage system for the silt dam according to claim 2 wherein the horizontal water collecting pipe of the bottom of the same horizontal water collecting pipe group of the silt layer is connected with a water collecting tank which is lower than the lowest water discharge port on the stilling well, the water collecting tank is communicated with the stilling well through a siphon pipe, and the siphon pipe penetrates through the lowest water discharge port on the stilling well and extends into the stilling well.
4. The water storage system for a silt dam according to claim 3 wherein at least three horizontal groups of the sludge collection water share the same header tank and are radially distributed with the header tank as a center.
5. The water storage system for a check dam according to claim 1 or 2, wherein the water storage system for a check dam comprises a water collection tank communicating with the horizontal water collection pipe of the sludge layer, the water collection tank being lower than the lowest water discharge port on the stilling well, the water collection tank communicating with the stilling well through a siphon pipe, the siphon pipe extending into the stilling well through the lowest water discharge port on the stilling well.
6. The water storage system for the silt dam according to claim 2, 3 or 4, wherein the middle parts of two adjacent horizontal sludge water collecting pipes are communicated with each other through a vertical pipe in the same horizontal sludge water collecting pipe group.
7. The water storage system of the silt dam according to any one of claims 1 to 4, wherein said horizontal silt layer collecting pipes and said horizontal cut-off channel collecting pipes are provided with a sandstone layer on the periphery thereof.
8. The check dam water storage system of any one of claims 1-4 wherein said cut channel has a length no greater than 1/2 of the width of the channel downstream of the dam body.
9. The water accumulating system of the check dam as claimed in any one of claims 1 to 4, wherein said intercepting drain catchment horizontal pipes are gradually lowered in height from an end remote from the sump to an end close to the sump.
10. The check dam water storage system of any one of claims 1 to 4 wherein the underdam reservoir is upstream of the cut-off channel.
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| CN201911122072.2A CN110714436A (en) | 2019-11-15 | 2019-11-15 | Retaining system of check dam |
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| CN201911122072.2A CN110714436A (en) | 2019-11-15 | 2019-11-15 | Retaining system of check dam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112479394A (en) * | 2020-12-17 | 2021-03-12 | 甘肃省水利厅兰州水土保持科学试验站（甘肃省水土保持科学研究所） | System and process for treating point source polluted water in check area of silt dam in loess area |
| CN112973271A (en) * | 2021-01-23 | 2021-06-18 | 西安水务（集团）规划设计研究院有限公司 | A structure that is used for shallow water river collection water intaking water purification in mountain area |
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| CN112973271A (en) * | 2021-01-23 | 2021-06-18 | 西安水务（集团）规划设计研究院有限公司 | A structure that is used for shallow water river collection water intaking water purification in mountain area |
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