Multifunctional barrage with functions of low water head, sand setting and sand discharging
By setting up a water inlet trough and a sand discharge section on the top of the weir, and using a reverse slope and a sand discharge valve to achieve the deposition and discharge of mud and sand, the problem of water level rise and siltation in the weir during flood season is solved, low-cost sand sedimentation and discharge effects are achieved, and the service life of the weir is extended.
Patent Information
- Application Number
- CN202422842168.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-21
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-21
AI Technical Summary
The existing weirs raise the river water level during the flood season, causing flooding. The water inlet pool is prone to siltation, which is not conducive to sand and silt removal, and the daily maintenance costs are high.
A multifunctional weir dam with low head, sand settling and sand discharge is designed, including an inlet trough and a sand discharge part at the top of the dam body, a reverse slope at the bottom of the water inlet trough, and the deposition and discharge of mud and sand are achieved through the sand discharge valve and water flow channel. A water intake pipe is set at the bottom of the water collection well to facilitate water intake.
Effectively reduce mud and sand deposition, improve the sand settling and discharge functions of the weir, reduce daily maintenance costs, extend the service life of the weir, and enhance anti-scouring capabilities.
Smart Images
Figure CN223398109U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water conservancy construction, in particular to a multifunctional weir dam with low water head, sand settling and sand discharge functions. Background Art
[0002] A dam is a water-retaining structure that intercepts water flow in rivers and channels to raise water levels or regulate flow. It can form a reservoir, raise water levels, regulate runoff, and concentrate water head, and is used for flood control, water supply, irrigation, hydropower generation, and improved navigation.
[0003] In the mountainous and hilly areas of the south, the irrigated area of cultivated land is mostly scattered and small. The water source for the irrigation area mostly comes from mountain streams. In order to ensure the irrigation of cultivated land, it is often necessary to draw water from downstream rivers for irrigation.
[0004] The water intake of existing water-lifting projects is mainly achieved by building new higher weirs to raise the river water level and constructing new intake pools upstream. However, since the weirs are often high, during the flood season, the river water level is raised, causing flooding. The intake pools are prone to siltation, which is not conducive to sand and silt removal, and the daily maintenance costs are high.
[0005] In view of this, the inventor specially designed a multifunctional weir dam with low water head, sand settling and sand discharge, which resulted in this case. Utility Model Content
[0006] In order to solve the above problems, the technical solution of the present utility model is as follows:
[0007] A multifunctional weir dam with low head, sand settling and sand discharge, comprises a dam body, the dam body comprises existing masonry retaining walls on both sides thereof and a water inlet trough on the top of the dam body, the bottom of the water inlet trough comprises a first horizontal slope, a reverse slope inclined and raised along one side of the first horizontal slope, and a second horizontal slope horizontally distributed along one side of the reverse slope, a long cover plate connecting the two existing masonry retaining walls is erected on the top of the dam body, a sand discharge part and a water collection part are respectively provided at both ends of the long cover plate, the sand discharge part comprises two sand discharge valves and a water flow channel connecting the upstream and downstream of the weir dam and vertically passing through the water inlet trough, the sand discharge valves are arranged on both sides of the water flow channel in the width direction of the water inlet trough and are used to control the flow of water into the water collection part or downstream, the two sand discharge valves are arranged at the top of the existing masonry retaining wall close to the first horizontal slope, and the water collection part is arranged on the outside of the existing masonry retaining wall close to the reverse slope.
[0008] Preferably, the sand discharge portion further includes a sand discharge port, and the sand discharge port is communicated with the first horizontal slope through a sand discharge valve.
[0009] Preferably, the sand discharge valve is in the shape of a rectangular plate with a length of 0.4-0.6 m and a width of 0.4-0.6 m.
[0010] Preferably, the water collecting portion is provided with a water inlet, and the water inlet is communicated with the second horizontal slope.
[0011] Preferably, the elevation height of the water inlet relative to the second horizontal slope is 0.2-0.4 m.
[0012] Preferably, the water collection part includes a water collection well and a water intake pipe arranged inside the water collection well, and the other end of the water intake pipe passes through the side wall of the water collection well and is buried underground.
[0013] Preferably, the top cover of the water collection well is provided with a water collection cover plate.
[0014] Preferably, a filter portion is provided at the bottom of the water intake pipe.
[0015] Preferably, the two sand discharge valves are wooden gates.
[0016] Preferably, a stone-embedded concrete weir body is buried at the bottom of the sand discharge part and the water collection part, and a filling part is filled on the surrounding side.
[0017] The technical solution provided by the utility model has the following beneficial effects:
[0018] 1. The utility model arranges a water inlet trough and a sand discharge part on the top of the dam body, and a reverse slope is provided at the bottom of the water inlet trough, which can reduce the sedimentation of mud and sand at the water inlet and accumulate it on the side of the sand discharge part. At the same time, a sand discharge valve and a water flow channel are provided in the sand discharge part to discharge the deposited mud and sand, so that the dam has better sand settling and sand discharge functions, which is convenient for daily management and maintenance.
[0019] 2. By setting a water intake pipe at the bottom of the water collection well, it is convenient to get water for farming.
[0020] 3. By burying a stone concrete weir at the bottom of the sand discharge part and the water collection part, the service life and anti-scouring ability of the weir are improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.
[0022] in:
[0023] Figure 1 It is a schematic plan view of the overall structure of the utility model;
[0024] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model highlighting the sand discharge part;
[0025] Figure 3 This is a schematic diagram of the cross-sectional structure of the utility model highlighting the water collection well;
[0026] Figure 4 It is a schematic diagram of the longitudinal section structure of the utility model.
[0027] Description of labels:
[0028] 1. Dam body; 2. Existing masonry retaining wall; 3. Water inlet trough; 31. First horizontal slope; 32. Reverse slope; 33. Second horizontal slope; 4. Long cover plate; 5. Sand discharge section; 51. Sand discharge valve; 52. Sand discharge port; 53. Water flow channel; 6. Water collection section; 61. Water inlet; 62. Water collection well; 63. Water intake pipe; 64. Filter section; 65. Buried stone concrete weir body; 66. Backfill section; 7. Water collection cover plate. DETAILED DESCRIPTION
[0029] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0030] Please refer to Figures 1 to 4 , is a multifunctional weir dam with low water head, sand settling and sand discharge as the best embodiment of the utility model, including a dam body 1, the dam body 1 includes existing masonry retaining walls 2 on both sides thereof and a water inlet trough 3 on the top of the dam body 1, the bottom of the water inlet trough 3 includes a first horizontal slope 31, a reverse slope 32 inclined and raised along one side of the first horizontal slope 31, and a second horizontal slope 33 horizontally distributed along one side of the reverse slope 32. The first horizontal slope 31 is used for the deposition of mud and sand to prevent it from entering the second horizontal slope 33. A long cover plate 4 connecting the two existing masonry retaining walls 2 is set on the top of the dam body 1. The long cover plate 4 is a steel grille cover plate, and the two ends of the long cover plate 4 are respectively provided with The sand discharge part 5 and the water collection part 6, the sand discharge part 5 includes two sand discharge valves 51 and a water flow channel 53 that connects the upstream and downstream of the weir and vertically passes through the water inlet trough 3. The sand discharge valves 51 are arranged on both sides of the water flow channel 53 in the width direction of the water inlet trough 3 and are used to control the water flow into the water collection part 6 or downstream. The lowest position of the sand discharge valve 51 is flush with the first horizontal slope 31. The sand discharge valve 51 is used to control the flow of water. When sand discharge is required, the sand discharge valve 51 can be opened. The two sand discharge valves 51 are arranged on the top of the existing masonry retaining wall 2 close to the first horizontal slope 31. When they need to be opened, they can be pulled open from the top. The water collection part 6 is arranged on the outside of the existing masonry retaining wall 2 close to the reverse slope 32.
[0031] Please refer to Figures 1 to 4 The sand discharge portion 5 further includes a sand discharge port 52 , which is connected to the first horizontal slope 31 through a sand discharge valve 51 . When mud and sand accumulate on the first horizontal slope 31 , the sand discharge valve 51 is opened and the mud and sand are discharged from the sand discharge port 52 .
[0032] Please refer to Figure 1 and Figure 2 The sand discharge valve 51 is in the shape of a rectangular plate with a length of 0.4-0.6 m and a width of 0.4-0.6 m. The sand discharge valve 51 is adapted to the size of the water flow channel 53 .
[0033] Please refer to Figure 3 and Figure 4 The water collecting part 6 is provided with a water inlet 61 , which is communicated with the second horizontal slope 33 . The sand discharge valve 51 is opened, mud and sand are discharged from the sand discharge port 52 , and water flows into the water collecting part 6 through the water inlet 61 .
[0034] Please refer to Figure 4 The elevation height of the water inlet 61 relative to the second horizontal slope 33 is 0.2-0.4 m, which facilitates the influx of water and further reduces the entry of mud and sand into the water collection part 6.
[0035] Please refer to Figure 4 The water collection part 6 includes a water collection well 62 and a water intake pipe 63 arranged inside the water collection well 62. The other end of the water intake pipe 63 passes through the side wall of the water collection well 62 and is buried underground. The water intake pipe 63 is made of galvanized steel pipe, and the water collection well 62 is a reinforced concrete water intake well. The water in the water collection well 62 flows into irrigation through the water intake pipe 63.
[0036] Please refer to Figure 4 The top cover of the water collection well 62 is provided with a water collection cover plate 7, and the water collection well 62 cover is a steel grille cover plate.
[0037] Please refer to Figure 4 A filter portion 64 is provided at the bottom of the water intake pipe 63, and the filter portion 64 further filters mud and sand.
[0038] Please refer to Figure 1 and Figure 2 The two sand discharge valves 51 are wooden gates with simple structure and easy to use.
[0039] Please refer to the figure to Figure 4 A stone-buried concrete weir body 65 is buried at the bottom of the sand discharge part 5 and the water collection part 6, and a filling part 66 is filled on the surrounding side. The stone-buried concrete weir body 65 is a C20 stone-buried concrete weir body 65, and the filling part is backfilled with sand and gravel excavation materials, which improves the scour resistance and stability of the dam body 1 and increases its service life.
[0040] The utility model provides a multifunctional weir dam with low water head, sand settling and sand discharge. The implementation principle is: when not in use, the sand discharge valve 51 is closed, and with the impact of flowing water, the mud and sand on the riverbed will gradually accumulate on the first horizontal slope 31. When sand discharge is needed, the sand discharge valve 51 is opened, and the flowing water enters the water collection well 62 through the water inlet 61, and the mud and sand are discharged through the sand discharge port 52.
[0041] To sum up, the present invention provides a water inlet trough 3 and a sand discharge part 5 on the top of the dam body 1, and a reverse slope 32 is provided at the bottom of the water inlet trough 3, which can reduce the deposition of mud and sand at the water inlet 61 and accumulate it to the side of the sand discharge part 5. At the same time, a sand discharge valve 51 and a water flow channel are provided in the sand discharge part 5 to discharge the deposited mud and sand, so that the dam has better sand settling and sand discharge functions, which is convenient for daily maintenance.
[0042] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.
Claims
1. A multifunctional weir dam with low water head, sand settling and sand discharge, characterized in that: The invention comprises a dam body (1), wherein the dam body (1) comprises existing masonry retaining walls (2) arranged on both sides thereof and a water inlet trough (3) arranged on the top of the dam body (1), wherein the bottom of the water inlet trough (3) comprises a first horizontal slope (31), a reverse slope (32) inclined and raised along one side of the first horizontal slope (31), and a second horizontal slope (33) horizontally distributed along one side of the reverse slope (32), and a long cover plate (4) connecting the two existing masonry retaining walls (2) is arranged on the top of the dam body (1), and sand discharge parts (5) are respectively provided at both ends of the long cover plate (4) to and a water collecting part (6), the sand discharge part (5) comprising two sand discharge valves (51) and a water flow channel (53) communicating with the upstream and downstream of the weir and vertically penetrating the water inlet trough (3), the sand discharge valves (51) being arranged on both sides of the water flow channel (53) in the width direction of the water inlet trough (3) and being used to control the flow of water into the water collecting part (6) or downstream, the two sand discharge valves (51) being arranged on the top of the existing masonry retaining wall (2) close to the first horizontal slope (31), and the water collecting part (6) being arranged on the outside of the existing masonry retaining wall (2) close to the reverse slope (32).
2. A multifunctional weir dam with low water head, sand settling and sand discharge according to claim 1, characterized in that: The sand discharge portion (5) further comprises a sand discharge port (52), and the sand discharge port (52) is communicated with the first horizontal slope (31) via a sand discharge valve (51).
3. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 1, characterized in that: The sand discharge valve (51) is in the shape of a rectangular plate, with a length of 0.4-0.6 m and a width of 0.4-0.6 m.
4. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 1, characterized in that: The water collecting portion (6) is provided with a water inlet (61), and the water inlet (61) is communicated with the second horizontal slope (33).
5. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 4, characterized in that: The elevation height of the water inlet (61) relative to the second horizontal slope (33) is 0.2-0.4 m.
6. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 1, characterized in that: The water collection part (6) comprises a water collection well (62) and a water intake pipe (63) arranged inside the water collection well (62), and the other end of the water intake pipe (63) penetrates the side wall of the water collection well (62) and is buried underground.
7. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 6, characterized in that: The top of the water collection well (62) is covered with a water collection cover plate (7).
8. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 6, characterized in that: A filter portion (64) is provided at the bottom of the water intake pipe (63).
9. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 1, characterized in that: The two sand discharge valves (51) are wooden gates.
10. The multifunctional weir dam with low water head, sand settling and sand discharge functions according to claim 1, characterized in that: A stone-embedded concrete weir body (65) is buried at the bottom of the sand discharge part (5) and the water collection part (6), and a filling part (66) is filled around the weir body.