A water storage pool of hydraulic desilting

Abstract

This invention provides a hydraulically flushed sedimentation tank, relating to the technical field of sedimentation tank structures. The hydraulically flushed sedimentation tank includes a tank body, a flushing trough, and a flushing assembly. The flushing trough is located at the intersection of the upstream slope of the dam body and the conical slope of the tank bottom. The first outlet of the first flushing pipe of the flushing assembly is located above the center of the conical slope, and the height of the conical slope gradually decreases from the center outwards to flush sediment onto the flushing trough. The starting end of the flushing trough is connected to the second flushing pipe of the flushing assembly, and the ending end is connected to an external channel. The depth of the flushing trough gradually increases towards the ending end to discharge sediment from the flushing trough into the external channel via the second flushing pipe. This invention can reduce the cost of cleaning sediment from sedimentation tanks and improve cleaning efficiency.

Description

Technical Field

[0001] This invention relates to the field of reservoir structure technology, and more specifically, to a hydraulically desilting reservoir. Background Technology

[0002] In modern agricultural irrigation, reservoirs are often installed within irrigation districts to ensure stable and reliable irrigation. During the flood season, when river flow is high, river water can be transported to the vicinity of the reservoir via river diversion canals and water conveyance channels within the irrigation district. From there, it is pumped into the reservoir by booster pumps and stored. When irrigation is needed, water is released from the reservoir. However, during the flood season, the river water carries a large amount of silt, which accumulates at the bottom of the reservoir. This long-term silt buildup occupies a significant portion of the reservoir's capacity.

[0003] In related technologies, manual cleaning of silt is mainly used on a regular basis. Although this can alleviate the problem of silt deposition, the cost of manual cleaning is high and the efficiency is low. Summary of the Invention

[0004] The problem addressed by this invention is how to improve the cost and efficiency of cleaning silt from reservoirs.

[0005] To address the aforementioned problems, this invention provides a hydraulically flushed sedimentation tank, comprising a tank body, a flushing trough, and a flushing assembly. The flushing trough is located at the intersection of the upstream slope of the dam body and the conical slope of the tank bottom. The first outlet of the first flushing pipe of the flushing assembly is located above the center of the conical slope of the tank bottom, and the height of the conical slope gradually decreases from the center outwards to flush sediment from the conical slope into the flushing trough. The starting end of the flushing trough is connected to the second flushing pipe of the flushing assembly, and the ending end of the flushing trough is used to connect to an external channel. The depth of the flushing trough gradually increases towards the ending end to discharge sediment from the flushing trough into the external channel through the second flushing pipe.

[0006] Optionally, the flushing trough is located on the superior arc segment of the circular bottom surface of the conical slope of the pool bottom, and the inferior arc segment of the circular bottom surface of the conical slope of the pool bottom is provided with a retaining block, and the first flushing pipe and the second flushing pipe pass through the retaining block.

[0007] Optionally, the anchor block includes an integrally cast anchor block section and a straight wall section. The anchor block section is located at the starting end, and the depth of the anchor block section is adapted to the depth of the starting end of the flushing channel. The straight wall section is located at the ending end, and the depth of the straight wall section is adapted to the depth of the ending end of the flushing channel.

[0008] Optionally, the hydraulic sediment-dissipating reservoir further includes a sediment-dissipating corridor, wherein the sediment inlet section of the sediment-dissipating corridor is vertically located below the endpoint, and the sediment inlet of the sediment inlet section is connected to the bottom surface of the endpoint. The sediment discharge section of the sediment-dissipating corridor passes through the reservoir body and is used to connect with the external ditch.

[0009] Optionally, the cross-sectional area of ​​the sand inlet is smaller than the cross-sectional area of ​​the end point.

[0010] Optionally, the sand-drainage section of the sand-drainage corridor is equipped with a sand-drainage corridor control gate.

[0011] Optionally, the gate and gate body of the sand discharge corridor control gate are both equipped with a water seal structure on the side near the sand inlet section.

[0012] Optionally, the bottom wall height of the sand discharge section gradually decreases in the direction away from the sand inlet section.

[0013] Optionally, a construction platform is provided at the center of the conical slope of the pool bottom, and the cross-sectional area of ​​the construction platform is larger than the cross-sectional area of ​​the first outlet.

[0014] Optionally, the first flushing pipe is provided with a first water pipe control valve, and the second flushing pipe is provided with a second water pipe control valve.

[0015] The beneficial effects of the hydraulic sediment-flushing reservoir of the present invention are: The combination of the reservoir body, the flushing trough, and the flushing components forms an integrated structure that combines water storage and hydraulic sediment removal functions. This meets the basic needs of water storage and irrigation during the flood season, while also reducing maintenance costs by replacing manual dredging with hydraulic action. The flushing trough is located at the intersection of the upstream slope of the dam and the conical slope of the reservoir bottom. Combined with the design of the conical slope gradually decreasing in height from the center outwards, the natural slope of the conical surface allows most of the sediment deposited during water storage to flow naturally into the flushing trough, reducing sediment accumulation at the bottom of the reservoir. The outlet of the first flushing pipe of the flushing components is located above the center of the conical slope. After water is released from the reservoir, the discharged water flows along the conical slope to flush residual sediment into the flushing trough, enhancing the dredging effect. Furthermore, it can serve as a water supply pipe to the reservoir during non-flushing periods, ensuring water storage efficiency. The starting end of the flushing trough is connected to the second flushing pipe during flushing. The second flushing pipe provides ample water flow to the flushing trough. Combined with the trough's depth gradually increasing towards the end, it ensures the water flow velocity meets flushing requirements based on the initial flow speed and gravity acceleration, efficiently carrying away sediment. Simultaneously, when not flushing, the second flushing pipe can also participate in water storage and replenishment, working in conjunction with the first flushing pipe to avoid the limitations of a single pipe. Finally, the end of the flushing trough connects to an external channel. Driven by the water flow in the second flushing pipe and aided by its own structure, sediment is smoothly discharged, achieving hydraulic sediment removal. Meanwhile, the water storage function of the first and second flushing pipes ensures normal water storage in the reservoir. This effectively solves the problem of "mismatch between incoming and outgoing water," balancing water storage efficiency and sediment removal effectiveness, significantly reducing maintenance costs and operational complexity. Attached Figure Description

[0016] Figure 1 A plan view of a hydraulic sediment-flushing reservoir provided in an embodiment of the present invention; Figure 2 A schematic diagram of the AA cross-section of a hydraulic sediment-flushing reservoir provided in an embodiment of the present invention; Figure 3 A schematic cross-sectional view of the first flushing pipe provided in an embodiment of the present invention; Figure 4 This is a schematic BB cross-sectional view of the pier provided in an embodiment of the present invention; Figure 5 This is a schematic CC cross-section of a sand-drainage corridor provided in an embodiment of the present invention.

[0017] Explanation of reference numerals in the attached figures: 1. Reservoir body; 11. Upstream slope of dam; 12. Dam crest; 13. Downstream slope; 14. Conical slope of pool bottom; 15. Construction platform; 2. Sand flushing trough; 21. Starting point; 22. Ending point; 23. Side wall of sand flushing trough; 24. Bottom plate of sand flushing trough; 3. Water flushing components; 31. First water flushing pipe; 32. First water pipe control valve; 33. Second outlet; 34. Second water flushing pipe; 35. Second water pipe control valve; 36. First outlet; 4. Pier; 41. Pier section; 42. Straight wall section; 43. Soil under pier; 5. Sand discharge corridor; 51. Sand inlet; 52. Control gate of sand discharge corridor; 53. Side wall of sand discharge corridor; 54. Bottom plate of sand discharge corridor; 55. Top plate of sand discharge corridor. Detailed Implementation

[0018] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Although some embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the present invention. It should be understood that the accompanying drawings and embodiments of the present invention are for illustrative purposes only and are not intended to limit the scope of protection of the present invention.

[0019] The term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to"; the term "based on" means "at least partially based on"; the term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments"; and the term "optionally" means "optional embodiments". Definitions of other terms will be given in the following description. It should be noted that the concepts of "first," "second," etc., mentioned in this invention are used only to distinguish different devices, modules, or units, and are not intended to limit the order of functions performed by these devices, modules, or units or their interdependencies.

[0020] It should be noted that the terms "a" and "a plurality of" used in this invention are illustrative rather than restrictive. Those skilled in the art should understand that, unless otherwise expressly indicated in the context, they should be understood as "one or more".

[0021] In related technologies, when silt accumulates in reservoirs to a certain extent, manual dredging is generally used. However, this method not only consumes a large amount of manpower and resources but also brings many inconveniences to the operation of the project, ultimately leading to a significant decrease in project benefits. Statistics show that a single reservoir in an irrigation area has a volume of approximately 100,000 cubic meters, which can control about 5,000 mu (approximately 333 hectares) of farmland. For a large irrigation area of ​​300,000 mu (approximately 20,000 hectares), 60 reservoirs are needed. Surveys indicate that for a 100,000 cubic meter reservoir using the Yellow River as its water source, the conventional dredging cycle is 1-3 years, with a single dredging volume of 6,000-7,000 cubic meters, at a cost of 10-30 yuan per cubic meter. If calculated based on a dredging cycle of 2 years / time, a cost of 20 yuan / cubic meter, and a single dredging volume of 6,500 cubic meters, the cost of dredging a single reservoir is 130,000 yuan per time. For a large irrigation area of ​​300,000 mu (approximately 20,000 hectares), the dredging cost every two years reaches 7.8 million yuan, averaging approximately 3.9 million yuan per year. The annual income of a 300,000-mu irrigation area is about 10-20 million yuan. It can be seen that the cost of dredging the reservoir accounts for a very high proportion of the annual income of the irrigation area, which seriously affects the efficiency of the irrigation area.

[0022] In response to the problems existing in the aforementioned related technologies, such as Figure 1 , Figure 2 and Figure 4 As shown in the figure, an embodiment of the present invention provides a hydraulic sand-flushing reservoir, including a reservoir body 1, a sand flushing trough 2, and a flushing assembly 3. The sand flushing trough 2 is located at the intersection of the upstream slope 11 of the dam body of the reservoir body 1 and the conical slope 14 of the bottom of the reservoir. The first outlet of the first flushing pipe 31 of the flushing assembly 3 is located above the center of the conical slope 14 of the bottom of the reservoir, and the height of the conical slope 14 of the bottom of the reservoir gradually decreases from the center to the periphery, so as to flush the mud and sand on the conical slope 14 of the bottom of the reservoir into the sand flushing trough 2. The starting end 21 of the sand flushing trough 2 is connected to the second flushing pipe 34 of the flushing assembly 3, and the ending end 22 of the sand flushing trough 2 is used to connect with an external ditch. The depth of the sand flushing trough 2 gradually increases along the direction close to the ending end 22, so as to discharge the mud and sand in the sand flushing trough 2 into the external ditch through the second flushing pipe 34.

[0023] Specifically, the reservoir body 1 includes an upstream slope protection 11, a dam crest 12, a downstream slope 13, and a conical slope protection 14 at the bottom of the reservoir. The reservoir body 1 can be a trapezoidal structure filled with earth. The width of the dam crest 12 can be 4m to 6m. The slope ratio of the upstream slope protection 11 can be 1:1.5 to 1:3, and the slope ratio of the downstream slope 13 can be 1:1.5 to 2.5. The upstream slope protection 11 can be provided with a 0.2m thick concrete slope protection to prevent seepage and protect the dam. In the field of water conservancy engineering, upstream refers to the water-facing side of the dam, and downstream refers to the water-repellent side of the dam. The flushing trough 2 is a rectangular structure, including two flushing trough sidewalls 23 and a flushing trough bottom plate 24 made of reinforced concrete. The thickness of the flushing trough sidewalls 23 and the flushing trough bottom plate 24 can be 1 / 6 to 1 / 8 of the trough depth, and not less than 0.3m. The first flushing pipe 31 and the second flushing pipe 34 of the flushing assembly 3 can be steel pipes, and their diameters can be the same as the inlet pipe. For example... Figure 3 As shown, the first flushing pipe 31 passes through the dam and is laid from the bottom of the pool to the top of the pool bottom cone. The flushing trough 2 is located at the intersection of the upstream slope 11 of the dam body and the conical slope 14 of the bottom of the reservoir body 1. That is, the flushing trough 2 is located at the lowest point between the upstream slope 11 of the dam body and the conical slope 14 of the bottom of the reservoir. The first outlet 36 of the first flushing pipe 31 is located above the center of the conical slope 14 of the bottom of the reservoir. The height of the conical slope 14 of the bottom of the reservoir gradually decreases from the center to the surrounding area, so as to flush the mud and sand on the conical slope 14 of the bottom of the reservoir into the flushing trough 2. The starting end 21 of the flushing trough 2 is connected to the second flushing pipe 34. That is, the second outlet 33 is located at the starting end 21 of the flushing trough 2. The ending end 22 of the flushing trough 2 is used to connect with the external ditch. The depth of the flushing trough 2 gradually increases along the direction close to the ending end 22, so as to discharge the mud and sand in the flushing trough 2 into the external ditch through the second flushing pipe 34. In order to facilitate construction and simplify the structure, the top elevation of the flushing trough 2 remains unchanged. The depth and net cross-sectional dimensions of the flushing channel 2 can be determined according to Manning's formula to ensure that the flow velocity during flushing meets the flushing velocity requirements. For example, according to the *Hydraulic Engineering Design Manual* (Volume 9), the flushing velocity is generally 3 m / s to 5 m / s. For example, as... Figure 2 , Figure 3 and Figure 5 As shown, the slope of the upstream slope 11 of the dam body is 1 / k, the slope of the downstream slope 13 of the dam body is 1 / j, and the slope of the conical slope 14 at the bottom of the pool body is 1 / e. Here, k, j, and e are coefficients that can be set according to actual needs. Figure 4 and Figure 5 The hollow arrow in the middle indicates the direction of water flow.

[0024] For example, when starting sand removal, water can be drained through the first outlet 36 of the first flushing pipe 31 to flush the mud and sand on the conical slope 14 at the bottom of the pool into the sand flushing trough 2. Then, the second outlet 33 of the second flushing pipe 34 is opened, and the water flow output through the second outlet 33 flushes the mud and sand in the sand flushing trough 2 from the starting end 21 to the ending end, and then discharges it into the external ditch to achieve sand removal. When storing water, the connection between the sand flushing trough 2 and the external ditch can be closed, and then water can be stored through the first flushing pipe 31 and / or the second flushing pipe 34.

[0025] In this embodiment, the combination of the reservoir body 1, the flushing trough 2, and the flushing component 3 constitutes an overall structure that combines water storage and hydraulic sediment removal functions. This not only meets the basic needs of water storage and irrigation during the flood season but also reduces maintenance costs by replacing manual dredging with hydraulic action. The flushing trough 2 is located at the intersection of the upstream slope 11 of the dam and the conical slope 14 at the bottom of the reservoir. Combined with the design of the conical slope 14, whose height gradually decreases from the center to the periphery, the natural slope of the conical surface allows most of the sediment deposited during water storage to flow into the flushing trough 2, reducing sediment accumulation at the bottom of the reservoir. The outlet of the first flushing pipe 31 of the flushing component 3 is located above the center of the conical slope 14 at the bottom of the reservoir. This not only allows residual sediment to be flushed to the flushing trough 2 via the discharged water flow after water is released from the reservoir, enhancing the dredging effect, but also... When flushing, the first flushing pipe 31 can serve as a water supply pipe to store water in the reservoir, ensuring water storage efficiency. The starting end 21 of the flushing trough 2 is connected to the second flushing pipe 34. During flushing, the second flushing pipe 34 can provide sufficient water flow to the flushing trough 2. With the design that the depth of the flushing trough 2 gradually increases towards the end end 22, it ensures that the water flow velocity in the trough meets the flushing requirements and efficiently carries the sediment. At the same time, when not flushing, the second flushing pipe 34 can also participate in water storage and replenishment, working in conjunction with the first flushing pipe 31 to avoid the limitations of a single pipe for water replenishment. Finally, the end end 22 of the flushing trough 2 is connected to the external ditch. Driven by the water flow of the second flushing pipe 34 and aided by its own structure, the sediment is smoothly discharged, realizing hydraulic sediment removal. The water storage function of the first and second flushing pipes when not flushing ensures the normal water storage of the reservoir, effectively solving the problem of "mismatch between incoming and outgoing water", taking into account both water storage efficiency and sediment removal effect, significantly reducing operation and maintenance costs and simplifying operation.

[0026] Optionally, such as Figure 1 and Figure 4 As shown, the sand flushing trough 2 is located on the superior arc section of the circular bottom surface of the conical slope 14 at the bottom of the pool, and the inferior arc section of the circular bottom surface of the conical slope 14 at the bottom of the pool is provided with a retaining block 4. The first flushing pipe 31 and the second flushing pipe 34 pass through the retaining block 4.

[0027] Specifically, the conical slope 14 at the bottom of the pool is conical, with a high center and low sides. The slope ratio of the conical slope can be 1:5 to 1:20. A 0.2m thick concrete slope can be installed on the slope to prevent seepage and provide protection for the bottom of the pool. Its bottom surface is circular. The flushing channel 2 is located at the intersection of the upstream slope 11 of the dam and the conical slope 14 at the bottom of the pool. That is, the flushing channel 2 is located around the circular bottom surface of the conical slope 14 at the bottom of the pool. In order to facilitate flushing and sand discharge, the circular bottom surface of the conical slope 14 at the bottom of the pool is divided into a superior arc section and a inferior arc section. The flushing channel 2 is located in the superior arc section, and the starting end 21 and the ending end 22 of the flushing channel 2 are located at the two ends of the superior arc section, respectively. A retaining block 4 is installed in the inferior arc section. The retaining block 4 can be used to stabilize the first flushing pipe 31 and the second flushing pipe 34 to prevent the first flushing pipe 31 and the second flushing pipe 34 from being damaged by vibration when releasing water.

[0028] Optionally, such as Figure 1 and Figure 4 As shown, the anchor 4 includes an integrally cast anchor section 41 and a straight wall section 42. The anchor section 41 is located at the starting end 21, and the depth of the anchor section 41 is adapted to the depth of the starting end 21 of the sand flushing channel 2. The straight wall section 42 is located at the ending end 22, and the depth of the straight wall section 42 is adapted to the depth of the ending end 22 of the sand flushing channel 2.

[0029] Specifically, the anchor 4 can be constructed of reinforced concrete, comprising an integrally cast anchor section 41 and a straight wall section 42. The anchor section 41 is located at the starting end 21, with one end connected to the starting end 21, i.e., connected to the side wall 23 and bottom plate 24 of the flushing trough at the starting end 21. The depth of the anchor section 41 matches the depth of the starting end 21 of the flushing trough 2, i.e., the bottom surface of the anchor section 41 is at the same horizontal plane as the bottom plate 24 of the flushing trough at the starting end 21. The other end of the anchor section 41 is connected to one end of the straight wall section 42, and the other end of the straight wall section 42 is connected to the ending end 22, i.e., connected to the side wall 23 and bottom plate 24 of the flushing trough at the ending end 22. The depth of the straight wall section 42 matches the depth of the ending end 22 of the flushing trough 2, i.e., the bottom surface of the straight wall section 42 is at the same horizontal plane as the bottom plate 24 of the flushing trough at the ending end 22, or as... Figure 4 As shown, the bottom surface of the straight wall section 42 is lower than the bottom plate 24 of the flushing trough 2 to protect the soil 43 under the pier in the inferior arc section. Since the depth of the flushing trough 2 gradually increases along the direction near the end point 22, that is, the flushing trough 2 has a slope, the bottom elevation of the trough at the starting end 21 is higher than the bottom elevation of the trough at the end point 22. The difference in elevation between the two can easily cause the soil 43 under the pier to flow into the flushing trough 2, thereby causing the pier 4 structure to be unstable. Therefore, the straight wall section 42 is set to protect the soil 43 under the pier.

[0030] Optionally, such as Figure 1 , Figure 4 and Figure 5As shown, the hydraulic sand-dissipating reservoir also includes a sand-dissipating corridor 5. The sand-inlet section of the sand-dissipating corridor 5 is vertically located below the end point 22, and the sand inlet 51 of the sand-inlet section is connected to the bottom surface of the end point 22. The sand-dissipating section of the sand-dissipating corridor 5 passes through the reservoir body 1 and is used to connect with the external ditch.

[0031] Specifically, the hydraulic sediment-discharging reservoir also includes a sediment-discharging corridor 5. The sediment-discharging corridor 5 adopts a rectangular box culvert structure, with a width consistent with the side length of the sediment inlet 51 and a height of up to 2m. The thickness of the sediment-discharging corridor sidewalls 53, bottom slab 54, and top slab 55 can be 50 to 80cm, and they are constructed with reinforced concrete. The sediment-discharging corridor 5 includes a connected sediment inlet section and a sediment discharge section. The sediment inlet section is vertically located below the end point 22, and its inlet 51 is connected to the bottom surface of the end point 22. The sediment discharge section of the sediment-discharging corridor 5 is horizontal to facilitate connection with external channels and to change the water flow direction from vertical to horizontal. The sediment discharge section passes through the reservoir body 1, that is, the sediment discharge section of the sediment-discharging corridor 5 is set through the dam and is used to connect with external channels to discharge sediment. Figure 4 In this context, i=1 / n represents the water flow velocity at endpoint 22. Figure 5 In this context, i=1 / m represents the water flow velocity in the sediment discharge corridor 5, and m and n are coefficients that can be obtained through experiments.

[0032] Optionally, such as Figure 4 and Figure 5 As shown, the cross-sectional area of ​​the sand inlet 51 is smaller than the cross-sectional area of ​​the end point 22.

[0033] Specifically, the sand inlet 51 can adopt a square cross-section with a side length of 1 to 1.5m. Its cross-sectional area is slightly smaller than that of the end point 22, that is, its width is slightly smaller than the bottom width of the end point 22 of the sand flushing channel 2. This is to ensure that the water flow in the sand flushing channel 2 can maintain good continuity and kinetic energy when entering the sand discharge corridor 5, and to avoid the water flow from being dispersed and the flow velocity from dropping sharply due to the inlet being too wide, thereby preventing the sediment from accumulating at the inlet.

[0034] For example, the width of the sand inlet 51 is equal to the width of the end point 22 to facilitate construction.

[0035] Optionally, such as Figure 1 As shown, the sand discharge section of the sand discharge corridor 5 is equipped with a sand discharge corridor control gate 52.

[0036] Specifically, the sand discharge section of the sand discharge corridor 5 is equipped with a sand discharge corridor control gate 52 to facilitate the control of sand discharge, such as starting sand discharge, closing sand discharge, and the speed of sand discharge. The gate body of the sand discharge corridor control gate 52 can be made of reinforced concrete, and the gate can be a steel gate.

[0037] Optionally, the gate and gate body of the sand discharge corridor control gate 52 are both equipped with a water seal structure on the side near the sand inlet section.

[0038] Specifically, the gate and gate body of the sand discharge corridor control gate 52 are equipped with a water seal structure on the side near the sand inlet section. That is, the gate and gate body are equipped with a water seal structure in the direction facing the mud-water mixture. P-type rubber waterstop can be used to ensure that the gate is tightly sealed with the gate bottom plate, gate top plate and gate piers on both sides when blocking water, to prevent leakage and increase the sealing effect when not discharging sand.

[0039] Optionally, the bottom wall height of the sand discharge section gradually decreases in the direction away from the sand inlet section.

[0040] Specifically, the bottom wall height of the sand discharge section gradually decreases in the direction away from the sand inlet section. That is, the bottom wall of the sand discharge section has a certain slope so that the height of the end of the sand discharge section near the sand inlet section is higher than that of the end away from the sand inlet section. This increases the flow velocity of the mud-water mixture entering the sand discharge section under the action of gravity, so as to ensure that the water flow velocity during sand flushing reaches the design sand flushing velocity requirement, and thus smoothly discharge the sand.

[0041] Optionally, such as Figures 1 to 3 As shown, a construction platform 15 is provided at the center of the conical slope 14 at the bottom of the pool, and the cross-sectional area of ​​the construction platform 15 is larger than the cross-sectional area of ​​the first outlet 36.

[0042] Specifically, a construction platform 15 is provided at the center of the conical slope 14 at the bottom of the pool. The cross-sectional area of ​​the construction platform 15 is larger than the cross-sectional area of ​​the first outlet 36. For example, when both the construction platform 15 and the first outlet 36 are circular, the diameter of the construction platform 15 is twice the diameter of the first outlet 36 to facilitate construction.

[0043] Optionally, such as Figure 1 As shown, the first flushing pipe 31 is equipped with a first water pipe control valve 32, and the second flushing pipe 34 is equipped with a second water pipe control valve 35.

[0044] Specifically, the first flushing pipe 31 is equipped with a first water pipe control valve 32 to control the opening and closing of the first flushing pipe 31 and the water flow rate, and the second flushing pipe 34 is equipped with a second water pipe control valve 35 to control the opening and closing of the second flushing pipe 34 and the water flow rate.

[0045] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A hydraulically operated sediment-flushing type reservoir, characterized in that, The system includes a reservoir body (1), a flushing trough (2), and a flushing assembly (3). The flushing trough (2) is located at the intersection of the upstream slope protection (11) of the reservoir body (1) and the conical slope protection (14) at the bottom of the reservoir. The first outlet (36) of the first flushing pipe (31) of the flushing assembly (3) is located above the center of the conical slope protection (14) at the bottom of the reservoir. The height of the conical slope protection (14) at the bottom of the reservoir gradually decreases from the center to the surrounding area, so as to flush the conical slope protection (14) at the bottom of the reservoir. The mud and sand on the slope protection (14) are flushed into the flushing trough (2). The starting end (21) of the flushing trough (2) is connected to the second flushing pipe (34) of the flushing assembly (3). The ending end (22) of the flushing trough (2) is used to connect with the external ditch. The depth of the flushing trough (2) gradually increases along the direction close to the ending end (22) so that the mud and sand in the flushing trough (2) can be discharged into the external ditch through the second flushing pipe (34). The flushing trough (2) is located on the superior arc section of the circular bottom surface of the conical slope protection (14) at the bottom of the pool. The inferior arc section of the circular bottom surface of the conical slope protection (14) at the bottom of the pool is provided with a retaining block (4). The first flushing pipe (31) and the second flushing pipe (34) pass through the retaining block (4). The pier (4) includes an integrally cast pier section (41) and a straight wall section (42). The pier section (41) is located at the starting end (21), and the depth of the pier section (41) is adapted to the depth of the starting end (21) of the sand flushing channel (2). The straight wall section (42) is located at the ending end (22), and the depth of the straight wall section (42) is adapted to the depth of the ending end (22) of the sand flushing channel (2).

2. The hydraulic sediment-flushing reservoir according to claim 1, characterized in that, It also includes a sand discharge corridor (5), the sand inlet section of which is vertically located below the end point (22), and the sand inlet (51) of which is connected to the bottom surface of the end point (22). The sand discharge section of the sand discharge corridor (5) passes through the main body of the reservoir (1) and is used to connect with the external ditch.

3. The hydraulic sediment-flushing reservoir according to claim 2, characterized in that, The cross-sectional area of ​​the sand inlet (51) is smaller than the cross-sectional area of ​​the end point (22).

4. The hydraulic sediment-flushing reservoir according to claim 2, characterized in that, The sand-discharging section of the sand-discharging corridor (5) is equipped with a sand-discharging corridor control gate (52).

5. The hydraulic sediment-flushing reservoir according to claim 4, characterized in that, The gate and gate body of the sand discharge corridor control gate (52) are both equipped with water seal structures on the side of the sand inlet section.

6. The hydraulic sediment-flushing reservoir according to claim 2, characterized in that, The height of the bottom wall of the sand discharge section gradually decreases in the direction away from the sand inlet section.

7. The hydraulic sediment-flushing reservoir according to claim 1, characterized in that, A construction platform (15) is provided at the center of the conical slope protection (14) at the bottom of the pool, and the cross-sectional area of ​​the construction platform (15) is larger than the cross-sectional area of ​​the first outlet (36).

8. The hydraulic sediment-flushing reservoir according to claim 1, characterized in that, The first flushing pipe (31) is equipped with a first water pipe control valve (32), and the second flushing pipe (34) is equipped with a second water pipe control valve (35).

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