Water gate for water taking and draining of silt dam and operation method

Abstract

The sluice comprises a foundation, a first side wall and a second side wall are fixedly connected to the top of the foundation, a front retaining wall and a back retaining wall are fixedly connected to the portion, between the first side wall and the second side wall, of the top of the foundation, a platform is arranged at the top of the front retaining wall, and a concrete stoplog door is fixedly connected to the platform. The top of the first side wall and the top of the second side wall are fixedly connected with a hoist chamber, the inner wall of the first side wall and the inner wall of the second side wall are jointly and fixedly connected with a breast wall, the top of the breast wall is fixedly connected with the hoist chamber, a gate chamber bottom plate is fixedly connected between the breast wall and the back retaining wall, a service gate is arranged between the gate chamber bottom plate and the platform, and a water outlet through hole is formed in the bottom of the back retaining wall. The invention further discloses an operation method of the sluice for water taking and draining of the silt dam. According to the sluice for water taking and draining of the silt dam and the operation method, the problems that in the prior art, the project amount of sluice chamber concrete is large, sluice gate redundancy is wasted, and a water outlet behind the sluice is likely to be silted and blocked are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of green environmental protection and water conservancy engineering, and specifically relates to a sluice gate used for taking in and releasing water from a silt dam, and also relates to an operating method of the sluice gate used for taking in and releasing water from a silt dam. Background Art

[0002] Warping dams can intercept silt and rocks in mountain torrents or debris flows, slow down the slope of the ditch bed upstream of the dam, and reduce the flow rate and scouring force downstream. They are important green ecological, water conservancy, and soil and water conservation engineering measures. They are widely used in areas such as the Loess Plateau. Regional silting dams not only have the function of flood control and sediment retention, but also have the advantages of using local materials and being green and environmentally friendly. They are of great significance to the ecological protection and high-quality development of the Yellow River Basin.

[0003] Warping dams are usually equipped with ecological water discharge, flood discharge and water intake facilities, which are implemented by sluice gates. The water level and high silt level in front of the sluice gate increase and change with the increase of project operation time, which has an important impact on the operation and benefits of the silting dam. The structure and operation method of the existing sluice gates usually adopt layered water inlets, and the water inlet channel is equipped with multiple working gates at different elevations. Not only are there shortcomings such as large amount of concrete engineering in the gate chamber, redundant gate waste, high project cost, and easy siltation and blockage at the outlet behind the gate, but also it has an adverse effect on the layout of the dam body. Summary of the invention

[0004] The purpose of the present invention is to provide a sluice for taking in and releasing water from a silt dam, which solves the problems in the prior art of large concrete engineering volume of the sluice chamber, redundant waste of gates, and easy siltation and blockage at the outlet behind the sluice.

[0005] Another object of the present invention is to provide an operating method for a sluice gate used for taking in and releasing water from a silt dam.

[0006] The technical solution adopted in the present invention is a sluice for taking water out of a silt dam, comprising a foundation, a first side wall and a second side wall are fixedly connected to the top of the foundation, a front retaining wall and a rear retaining wall are fixedly connected between the first side wall and the second side wall at the top of the foundation, a platform is provided on the top of the front retaining wall, a concrete stacked beam door is fixedly connected to the platform, a hoisting machine room is fixedly connected to the top of the first side wall and the second side wall, a breast wall is fixedly connected to the inner walls of the first side wall and the second side wall, the top of the breast wall is fixedly connected to the hoisting machine room, a gate base plate is fixedly connected between the breast wall and the rear retaining wall, a working gate is provided between the gate base plate and the platform, and a water outlet hole is opened at the bottom of the rear retaining wall.

[0007] The present invention is also characterized in that: The outer side of the back retaining wall is fixedly connected with a water outlet at the water outlet through hole.

[0008] The breast wall, the first side wall, the second side wall and the gate base together form a gate base. The bottom elevation of the breast wall is higher than the top elevation of the platform. The breast wall is arranged between the concrete stacked beam door and the working gate. The breast wall and the working gate form a closed water retaining structure.

[0009] The cross-section of the front retaining wall is "L"-shaped. The front retaining wall, the first side wall, the second side wall, the back retaining wall and the platform form a drop pit. The depth of the drop pit is from the elevation of the inner top surface of the bottom of the front retaining wall to the elevation of the water outlet hole. The length of the drop pit is 1 / 2 of the distance from the outer side of the front retaining wall to the outer side of the back retaining wall. The front retaining wall, the first side wall, the second side wall and the back retaining wall are an integral structure cast in one piece.

[0010] The thickness of the back retaining wall is 1.5-2.5m. The first protective steel plate is laid on the bottom of the inner side of the front retaining wall, the bottom surface and the bottom of the inner side of the back retaining wall, and the water outlet hole. The second protective steel plate is laid on the inner side of the back retaining wall at the corresponding position of the platform. The height of the second protective steel plate is 1 / 3 of the distance from the design flood level to the platform elevation, and the midpoint of the second protective steel plate is flush with the top of the platform.

[0011] The top elevation of the platform is the lowest design water level, and the distance between the end of the platform away from the concrete stacked beam door and the second protective steel plate is 0.2 times the distance from the design flood level to the top elevation of the platform.

[0012] A vent hole is vertically arranged in the back retaining wall, and the vent hole extends to the water outlet through hole.

[0013] The concrete stacked beam door is composed of several reinforced concrete door panels stacked vertically. The height of the concrete stacked beam door shall not be less than the height from the designed minimum water intake level to the verified flood level. The thickness of the concrete stacked beam door is 1 / 2 of the net width of the concrete stacked beam door. The depth of the concrete stacked beam door embedded in the door groove on one side is 1 / 2 of the thickness of the concrete stacked beam door. The distance from the center line of the concrete stacked beam door to the breast wall is 1.5-2.0 times the thickness of the concrete stacked beam door.

[0014] Another technical solution adopted by the present invention is a method for operating a sluice gate for taking in and releasing water from a silt dam, comprising the following steps: S1. Adjust the height of the concrete stopgate according to flood standards; S2. Adjust the height of the concrete stopgate to block flooding and increase the height of the clean water surface without siltation; S3, clean water without siltation passes through the top of the concrete stop gate and enters the space enclosed by the breast wall and the concrete stop gate. The clean water in the space falls into the drop pit through the working gate. S4. The clean water in the plunge pit without siltation is discharged through the outlet.

[0015] Another technical solution of the present invention is also characterized in that: The specific process of S1 is: when the number of reinforced concrete door panels N0 put into use is less than 1 / 2 of the total number of reinforced concrete door panels N, that is, N0 < 0.5N, and when a flood below the design flood standard occurs or no flood occurs, the concrete stacked beam door top elevation is always maintained at 2-3m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale is about to or has reached the design flood, the concrete stacked beam door top elevation is always maintained at more than 3m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale reaches or exceeds the check flood, the concrete stacked beam door top elevation is maintained at 0-1m higher than the real-time sedimentation elevation when the sluice is in operation; When the number of reinforced concrete gate panels N0 put into use is not less than 1 / 2 of the total number of stacked beam gate panels N, that is, N0 ≥ 0.5N, and when a flood occurs below the design flood standard or no flood occurs, the top elevation of the concrete stacked beam gate is always maintained at 1-2m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale is about to or has reached the design flood, the top elevation of the concrete stacked beam gate is always maintained at more than 2m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale reaches or exceeds the verification flood, the top elevation of the concrete stacked beam gate is maintained at 0-1m higher than the real-time sedimentation elevation when the sluice is in operation.

[0016] The beneficial effects of the present invention are: The sluice gate and operating method for taking water out of a silt dam provided by the present invention improve the efficiency and reliability of ecological water release, water intake and flood discharge of silt dams in the Loess Plateau and other regions, save construction engineering volume, reduce the weight of metal structures, reduce the risk of wear and corrosion of the metal structures of the sluice gates, improve the layout conditions of the silt dam body, better play the ecological benefits of the silt dam, and promote ecological protection and high-quality development in the Loess Plateau and the Yellow River Basin. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of a sluice used for taking in and releasing water from a silt dam according to the present invention; Figure 2 It is a front view of a sluice gate for taking in and releasing water from a silt dam according to the present invention; Figure 3 The present invention Figure 1 Middle AA section; Figure 4 The present invention Figure 1 Middle BB section; Figure 5 The present invention Figure 1 Middle CC section; Figure 6 The present invention Figure 1 Middle DD section view.

[0018] In the figure, 1. front retaining wall; 2. concrete stacked beam door; 3. gatehouse; 4. working gate; 5. first side wall; 6. waterfall pit; 7. second side wall; 8. breast wall; 9. water outlet; 10. foundation; 11. hoist room; 12. vent; 13. first protective steel plate; 14. platform, 15. back retaining wall, 16. gatehouse bottom plate, 17. second protective steel plate. DETAILED DESCRIPTION

[0019] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The sluice gate for taking in and releasing water from a silt dam provided by the present invention is as follows: Figure 1 As shown, it includes a foundation 10, the top of the foundation 10 is fixedly connected to the first side wall 5 and the second side wall 7, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate opening and closing machine room 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate opening and closing machine room 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, a water outlet hole is provided at the bottom of the back retaining wall 15, and a water outlet 9 is fixedly connected to the outer side of the back retaining wall 15 at the water outlet hole. Figure 3 As shown, the breast wall 8, the first side wall 5, the second side wall 7 and the gate base 16 together form the gate base 3, the bottom elevation of the breast wall 8 is higher than the top elevation of the platform 14, the breast wall 8 is arranged between the concrete stop beam door 2 and the working gate 4, and the breast wall 8 and the working gate 4 form a closed water retaining structure; the cross-section of the front retaining wall 1 is "L"-shaped, and the front retaining wall 1 and the first side wall 5, the second side wall 7, the back retaining wall 15 and the platform 14 form a drop pit 6, the depth of the drop pit 6 is the elevation from the top surface of the bottom of the front retaining wall 1 to the elevation of the water outlet hole, and the length of the drop pit 6 is 1 / 2 of the distance from the outside of the front retaining wall 1 to the outside of the back retaining wall 15. When the distance from the design flood level to the bottom plate elevation is less than 30.0m, the depth of the drop pit 6 is 2.0m When the distance from the design flood level to the bottom plate elevation is not less than 30.0m, the depth of the drop pit 6 is 3.0m; the length of the drop pit is 1 / 2 of the vertical distance from the outside of the front retaining wall to the outside of the back retaining wall. The front retaining wall 1, the first side wall 5, the second side wall 7 and the back retaining wall 15 are an integral structure cast in one piece. Figure 4As shown, the thickness of the back retaining wall 15 is 1.5-2.5m, the bottom of the inner side of the front retaining wall 1, the bottom surface and the bottom of the inner side of the back retaining wall 15, and the water outlet hole are all paved with a first protective steel plate 13, and the inner side of the back retaining wall 15 is paved with a second protective steel plate 17 at the corresponding position of the platform 14, the height of the second protective steel plate 17 is 1 / 3 of the elevation from the design flood level to the platform 14, and the midpoint of the second protective steel plate 17 is flush with the top of the platform 14; the top elevation of the platform 14 is the lowest design water intake level, and the distance between the end of the platform 14 away from the concrete stacked beam door 2 and the second protective steel plate 17 is 0.2 times the elevation from the design flood level to the top of the platform 14. Figure 5 , 6 As shown, a vent hole 12 is vertically provided in the back retaining wall 15, and the vent hole 12 extends to the water outlet hole; the concrete stacked beam door 2 is composed of a plurality of reinforced concrete door panels stacked vertically, and 2 doors are provided. When the height from the designed minimum water intake elevation to the designed siltation elevation is less than 20m, the height of a single reinforced concrete door panel is 1m; when the height from the designed minimum water intake elevation to the designed siltation elevation is ≥20m, the height of the reinforced concrete door panel is 1.5m, the height of the concrete stacked beam door 2 is not less than the height from the designed minimum water intake level to the verified flood level, the thickness of the concrete stacked beam door 2 is 1 / 2 of the net width of the concrete stacked beam door 2, the depth of the concrete stacked beam door 2 embedded in the door groove on one side is 1 / 2 of the thickness of the concrete stacked beam door 2, and the distance from the center line of the concrete stacked beam door 2 to the breast wall 8 is 1.5-2.0 times the thickness of the concrete stacked beam door 2.

[0021] Example 1 The sluice gate for taking in and releasing water from the silt dam proposed in this embodiment is as follows: Figure 1 , 2 As shown, it includes a foundation 10, a first side wall 5 and a second side wall 7 are fixedly connected to the top of the foundation 10, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate chamber 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate chamber 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, and a water outlet hole is opened at the bottom of the back retaining wall 15. Example 2 The sluice gate for taking in and releasing water from the silt dam proposed in this embodiment is as follows: Figure 1 , 2As shown, it includes a foundation 10, the top of the foundation 10 is fixedly connected to the first side wall 5 and the second side wall 7, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate opening and closing machine room 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate opening and closing machine room 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, a water outlet hole is provided at the bottom of the back retaining wall 15, and a water outlet 9 is fixedly connected to the outer side of the back retaining wall 15 at the water outlet hole. Figure 3 As shown, the breast wall 8, the first side wall 5, the second side wall 7 and the gate base plate 16 together form the gate base 3. The bottom elevation of the breast wall 8 is higher than the top elevation of the platform 14. The breast wall 8 is arranged between the concrete stacked beam door 2 and the working gate 4. The breast wall 8 and the working gate 4 form a closed water retaining structure.

[0022] Example 3 The sluice gate for taking in and releasing water from the silt dam proposed in this embodiment is as follows: Figure 1 , 2 As shown, it includes a foundation 10, the top of the foundation 10 is fixedly connected to the first side wall 5 and the second side wall 7, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate opening and closing machine room 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate opening and closing machine room 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, a water outlet hole is provided at the bottom of the back retaining wall 15, and a water outlet 9 is fixedly connected to the outer side of the back retaining wall 15 at the water outlet hole. Figure 3 As shown, the breast wall 8, the first side wall 5, the second side wall 7 and the gate base plate 16 together form the gate base 3, the bottom elevation of the breast wall 8 is higher than the top elevation of the platform 14, the breast wall 8 is arranged between the concrete stacked beam door 2 and the working gate 4, and the breast wall 8 and the working gate 4 form a closed water retaining structure; the cross-section of the front retaining wall 1 is "L"-shaped, and the front retaining wall 1 and the first side wall 5, the second side wall 7, the back retaining wall 15 and the platform 14 form a drop pit 6, the depth of the drop pit 6 is from the elevation of the inner top surface of the bottom of the front retaining wall 1 to the elevation of the water outlet hole, and the length of the drop pit 6 is 1 / 2 of the distance from the outside of the front retaining wall 1 to the outside of the back retaining wall 15, and the front retaining wall 1 and the first side wall 5, the second side wall 7 and the back retaining wall 15 are an integral structure cast in one piece.

[0023] Example 4 The sluice gate for taking in and releasing water from the silt dam proposed in this embodiment is as follows: Figure 1, 2 As shown, it includes a foundation 10, the top of the foundation 10 is fixedly connected to the first side wall 5 and the second side wall 7, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate opening and closing machine room 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate opening and closing machine room 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, a water outlet hole is provided at the bottom of the back retaining wall 15, and a water outlet 9 is fixedly connected to the outer side of the back retaining wall 15 at the water outlet hole. Figure 3 As shown, the breast wall 8, the first side wall 5, the second side wall 7 and the gate base 16 together form the gate base 3. The bottom elevation of the breast wall 8 is higher than the top elevation of the platform 14. The breast wall 8 is arranged between the concrete stacked beam gate 2 and the working gate 4. The breast wall 8 and the working gate 4 form a closed water retaining structure. The cross-section of the front retaining wall 1 is "L"-shaped. The front retaining wall 1, the first side wall 5, the second side wall 7, the back retaining wall 15 and the platform 14 form a drop pit 6. The depth of the drop pit 6 is from the elevation of the top surface of the bottom of the front retaining wall 1 to the elevation of the water outlet hole. The length of the drop pit 6 is 1 / 2 of the distance from the outside of the front retaining wall 1 to the outside of the back retaining wall 15. The front retaining wall 1, the first side wall 5, the second side wall 7 and the back retaining wall 15 are an integral structure cast in one piece. As shown Figure 4 As shown, the thickness of the back retaining wall 15 is 1.5-2.5m, the bottom of the inner side of the front retaining wall 1, the bottom surface and the bottom of the inner side of the back retaining wall 15, and the water outlet hole are all paved with a first protective steel plate 13, and a second protective steel plate 17 is paved on the inner side of the back retaining wall 15 at the corresponding position of the platform 14, and the height of the second protective steel plate 17 is 1 / 3 of the elevation from the design flood level to the platform 14, and the midpoint of the second protective steel plate 17 is flush with the top of the platform 14; the top elevation of the platform 14 is the lowest design water intake level, and the distance between the end of the platform 14 away from the concrete stacked beam door 2 and the second protective steel plate 17 is 0.2 times the elevation from the design flood level to the top of the platform 14.

[0024] Example 5 The sluice gate for taking in and releasing water from the silt dam proposed in this embodiment is as follows: Figure 1 , 2As shown, it includes a foundation 10, the top of the foundation 10 is fixedly connected to the first side wall 5 and the second side wall 7, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate opening and closing machine room 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate opening and closing machine room 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, a water outlet hole is provided at the bottom of the back retaining wall 15, and a water outlet 9 is fixedly connected to the outer side of the back retaining wall 15 at the water outlet hole. Figure 3 As shown, the breast wall 8, the first side wall 5, the second side wall 7 and the gate base 16 together form the gate base 3. The bottom elevation of the breast wall 8 is higher than the top elevation of the platform 14. The breast wall 8 is arranged between the concrete stacked beam gate 2 and the working gate 4. The breast wall 8 and the working gate 4 form a closed water retaining structure. The cross-section of the front retaining wall 1 is "L"-shaped. The front retaining wall 1, the first side wall 5, the second side wall 7, the back retaining wall 15 and the platform 14 form a drop pit 6. The depth of the drop pit 6 is from the elevation of the top surface of the bottom of the front retaining wall 1 to the elevation of the water outlet hole. The length of the drop pit 6 is 1 / 2 of the distance from the outside of the front retaining wall 1 to the outside of the back retaining wall 15. The front retaining wall 1, the first side wall 5, the second side wall 7 and the back retaining wall 15 are an integral structure cast in one piece. As shown Figure 4 As shown, the thickness of the back retaining wall 15 is 1.5-2.5m, the bottom of the inner side of the front retaining wall 1, the bottom surface and the bottom of the inner side of the back retaining wall 15, and the water outlet hole are all paved with a first protective steel plate 13, and the inner side of the back retaining wall 15 is paved with a second protective steel plate 17 at the corresponding position of the platform 14, the height of the second protective steel plate 17 is 1 / 3 of the elevation from the design flood level to the platform 14, and the midpoint of the second protective steel plate 17 is flush with the top of the platform 14; the top elevation of the platform 14 is the lowest design water intake level, and the distance between the end of the platform 14 away from the concrete stacked beam door 2 and the second protective steel plate 17 is 0.2 times the elevation from the design flood level to the top of the platform 14. Figure 5 , 6 As shown, a vent hole 12 is vertically provided in the back retaining wall 15, and the vent hole 12 extends to the water outlet hole; the concrete stacked beam door 2 is composed of a plurality of reinforced concrete door panels stacked vertically, the height of the concrete stacked beam door 2 is not less than the height from the designed minimum water intake level to the verified flood level, the thickness of the concrete stacked beam door 2 is 1 / 2 of the net width of the concrete stacked beam door 2, the depth of the concrete stacked beam door 2 embedded in the door groove on one side is 1 / 2 of the thickness of the concrete stacked beam door 2, and the distance from the center line of the concrete stacked beam door 2 to the breast wall 8 is 1.5-2.0 times the thickness of the concrete stacked beam door 2.

[0025] Example 6 The sluice gate for taking in and releasing water from the silt dam proposed in this embodiment is as follows: Figure 1, 2 As shown, it includes a foundation 10, the top of the foundation 10 is fixedly connected to the first side wall 5 and the second side wall 7, a front retaining wall 1 and a back retaining wall 15 are fixedly connected between the first side wall 5 and the second side wall 7 at the top of the foundation 10, a platform 14 is provided on the top of the front retaining wall 1, a concrete stacked beam door 2 is fixedly connected to the platform 14, a gate opening and closing machine room 11 is fixedly connected to the top of the first side wall 5 and the second side wall 7, a breast wall 8 is fixedly connected to the inner wall of the first side wall 5 and the second side wall 7, the top of the breast wall 8 is fixedly connected to the gate opening and closing machine room 11, a door base plate 16 is fixedly connected between the breast wall 8 and the back retaining wall 15, a working gate 4 is provided between the door base plate 16 and the platform 14, a water outlet hole is provided at the bottom of the back retaining wall 15, and a water outlet 9 is fixedly connected to the outer side of the back retaining wall 15 at the water outlet hole. Figure 3 As shown, the breast wall 8, the first side wall 5, the second side wall 7 and the gate base 16 together form the gate base 3. The bottom elevation of the breast wall 8 is higher than the top elevation of the platform 14. The breast wall 8 is arranged between the concrete stacked beam gate 2 and the working gate 4. The breast wall 8 and the working gate 4 form a closed water retaining structure. The cross-section of the front retaining wall 1 is "L"-shaped. The front retaining wall 1, the first side wall 5, the second side wall 7, the back retaining wall 15 and the platform 14 form a drop pit 6. The depth of the drop pit 6 is from the elevation of the top surface of the bottom of the front retaining wall 1 to the elevation of the water outlet hole. The length of the drop pit 6 is 1 / 2 of the distance from the outside of the front retaining wall 1 to the outside of the back retaining wall 15. The front retaining wall 1, the first side wall 5, the second side wall 7 and the back retaining wall 15 are an integral structure cast in one piece. As shown Figure 4 As shown, the thickness of the back retaining wall 15 is 1.5-2.5m, the bottom of the inner side of the front retaining wall 1, the bottom surface and the bottom of the inner side of the back retaining wall 15, and the water outlet hole are all paved with a first protective steel plate 13, and the inner side of the back retaining wall 15 is paved with a second protective steel plate 17 at the corresponding position of the platform 14, the height of the second protective steel plate 17 is 1 / 3 of the elevation from the design flood level to the platform 14, and the midpoint of the second protective steel plate 17 is flush with the top of the platform 14; the top elevation of the platform 14 is the lowest design water intake level, and the distance between the end of the platform 14 away from the concrete stacked beam door 2 and the second protective steel plate 17 is 0.2 times the elevation from the design flood level to the top of the platform 14. Figure 5 , 6 As shown, a vent hole 12 is vertically provided in the back retaining wall 15, and the vent hole 12 extends to the water outlet hole; the concrete stacked beam door 2 is composed of a plurality of reinforced concrete door panels stacked vertically, the height of the concrete stacked beam door 2 is not less than the height from the designed minimum water intake level to the verified flood level, the thickness of the concrete stacked beam door 2 is 1 / 2 of the net width of the concrete stacked beam door 2, the depth of the concrete stacked beam door 2 embedded in the door groove on one side is 1 / 2 of the thickness of the concrete stacked beam door 2, and the distance from the center line of the concrete stacked beam door 2 to the breast wall 8 is 1.5-2.0 times the thickness of the concrete stacked beam door 2.

[0026] When the siltation elevation is 1432.78m, the lowest design water intake elevation is 1421.5m, and the design flood level is 1436.33m, the top elevation of the front retaining wall is the lowest design water intake elevation 1421.50m. The thickness is determined to be 3.5m based on the stability calculation of the lock chamber. The concrete stacked beam door 2 is composed of 15 hoistable reinforced concrete door panels stacked vertically, and 2 more are available, totaling 17 panels. The height of a single reinforced concrete door panel is 1m. The net width of the concrete stacked beam door is 2m, the thickness of the concrete stacked beam door is 1m, and the depth of the concrete stacked beam door embedded in the door groove on one side is 0.5m of the thickness. The distance from the center line of the stacked beam door to the breast wall 8 is 1.8m.

[0027] The depth of the waterfall pit 6 is 2.0m, the elevation of the bottom plate of the front retaining wall 1 is 1408.5m, the flood level is 1436.33m, and the depth of the waterfall pit 6 is 2.0m.

[0028] The height of the second protective steel plate 17 at the rear of the platform 14 is 1 / 3 of the height from the design flood level to the control platform, which is 5.0m. The center point of the protection range is the top elevation of the platform 1421.5m. The vertical distance between the front retaining wall 1 and the back retaining wall 15 is 10.0m, the length of the drop pit 6 is determined to be 5.0m, and the length of the first protective steel plate 13 at the lower rear of the outlet 9 is 2.5m.

[0029] The distance between the end of the platform 14 and the second protective steel plate 17 is determined to be 3.0 m, and the foundation 10 is determined to be reinforced concrete cast-in-place piles.

[0030] Example 7 The operating method of the sluice for taking in and releasing water from a silt dam proposed in this embodiment comprises the following steps: S1. Adjust the height of the concrete stopgate according to flood standards; The specific process is: when the number of reinforced concrete door panels N0 put into use is less than 1 / 2 of the total number of reinforced concrete door panels N, that is, N0 < 0.5N, and when a flood below the design flood standard occurs or no flood occurs, the concrete stacked beam door top elevation is always maintained at 2-3m above the real-time sedimentation elevation of 1425m when the sluice is in operation, that is, 1427-1428m; when the flood scale is about to or has reached the design flood, the concrete stacked beam door top elevation is always maintained at more than 3m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale reaches or exceeds the verification flood, the concrete stacked beam door top elevation is maintained at 0-1m higher than the real-time sedimentation elevation when the sluice is in operation; When the number of reinforced concrete gate panels N0 put into use is not less than 1 / 2 of the total number of stacked beam gate panels N, that is, N0 ≥ 0.5N, and when a flood below the design flood standard occurs or no flood occurs, the top elevation of the concrete stacked beam gate is always kept between 1-2m above the real-time sedimentation elevation when the sluice gate is in operation; when the flood scale is about to or has reached the design flood, the top elevation of the concrete stacked beam gate is always kept at more than 2m above the real-time sedimentation elevation when the sluice gate is in operation; when the flood scale reaches or exceeds the check flood, the top elevation of the concrete stacked beam gate is kept higher than the real-time sedimentation elevation when the sluice gate is in operation by 0-1m; S2. Adjust the height of the concrete stopgate to block flooding and increase the height of the clean water surface without siltation; S3, clean water without siltation passes through the top of the concrete stop gate and enters the space enclosed by the breast wall and the concrete stop gate. The clean water in the space falls into the drop pit through the working gate. S4. The clean water in the plunge pit without siltation is discharged through the outlet.

Claims

1. A sluice gate for taking in and releasing water from a silt dam, characterized in that: The invention comprises a foundation (10), wherein a first side wall (5) and a second side wall (7) are fixedly connected to the top of the foundation (10), a front retaining wall (1) and a rear retaining wall (15) are fixedly connected between the first side wall (5) and the second side wall (7) at the top of the foundation (10), a platform (14) is provided at the top of the front retaining wall (1), a concrete stop beam door (2) is fixedly connected to the platform (14), a gate hoist chamber (11) is fixedly connected to the top of the first side wall (5) and the second side wall (7), a breast wall (8) is fixedly connected to the inner wall of the first side wall (5) and the second side wall (7), the top of the breast wall (8) is fixedly connected to the gate hoist chamber (11), a door base plate (16) is fixedly connected between the breast wall (8) and the rear retaining wall (15), a working gate (4) is provided between the door base plate (16) and the platform (14), and a water outlet through hole is opened at the bottom of the rear retaining wall (15).

2. The sluice gate for taking in and releasing water from a silt dam according to claim 1, characterized in that: A water outlet (9) is fixedly connected to the outer side of the rear retaining wall (15) at the water outlet through hole.

3. The sluice gate for taking in and releasing water from a silt dam according to claim 2, characterized in that: The breast wall (8) and the first side wall (5), the second side wall (7) and the gate base plate (16) together form a gate base (3); the bottom elevation of the breast wall (8) is higher than the top elevation of the platform (14); the breast wall (8) is arranged between the concrete stopgate (2) and the working gate (4); the breast wall (8) and the working gate (4) form a closed water retaining structure.

4. The sluice gate for taking in and releasing water from a silt dam according to claim 3, characterized in that: The front retaining wall (1) has an L-shaped cross section. The front retaining wall (1) forms a water drop pit (6) with the first side wall (5), the second side wall (7), the back retaining wall (15) and the platform (14). The depth of the water drop pit (6) is the distance from the top surface of the bottom of the front retaining wall (1) to the elevation of the water outlet hole. The length of the water drop pit (6) is 1 / 2 of the distance from the outside of the front retaining wall (1) to the outside of the back retaining wall (15). The front retaining wall (1) is an integral structure cast in one piece with the first side wall (5), the second side wall (7) and the back retaining wall (15).

5. The sluice gate for taking in and releasing water from a silt dam according to claim 4, characterized in that: The thickness of the rear retaining wall (15) is 1.5-2.5 m. The bottom of the inner side surface of the front retaining wall (1), the bottom surface, the bottom of the inner side surface of the rear retaining wall (15), and the water outlet hole are all paved with a first protective steel plate (13). The inner side surface of the rear retaining wall (15) is paved with a second protective steel plate (17) at a position corresponding to the platform (14). The height of the second protective steel plate (17) is 1 / 3 of the elevation from the design flood level to the platform (14), and the midpoint of the second protective steel plate (17) is flush with the top of the platform (14).

6. The sluice gate for taking in and releasing water from a silt dam according to claim 5, characterized in that: The top elevation of the platform (14) is the lowest design water intake level, and the distance between the end of the platform (14) away from the concrete stoplog door (2) and the second protective steel plate (17) is 0.2 times the distance from the design flood level to the top elevation of the platform (14).

7. The sluice gate for taking in and releasing water from a silt dam according to claim 6, characterized in that: A vent hole (12) is vertically provided in the rear retaining wall (15), and the vent hole (12) extends into the water outlet through hole.

8. The sluice gate for taking in and releasing water from a silt dam according to claim 7, characterized in that: The concrete stacked beam door (2) is composed of a plurality of reinforced concrete door panels stacked vertically. The height of the concrete stacked beam door (2) is not less than the height from the designed minimum water intake level to the verified flood level. The thickness of the concrete stacked beam door (2) is 1 / 2 of the net width of the concrete stacked beam door (2). The depth of the concrete stacked beam door (2) embedded in the door groove on one side is 1 / 2 of the thickness of the concrete stacked beam door (2). The distance from the center line of the concrete stacked beam door (2) to the breast wall (8) is 1.5-2.0 times the thickness of the concrete stacked beam door (2).

9. A method for operating a sluice gate for taking in and releasing water from a silt dam, characterized in that: The sluice gate for taking in and releasing water from a silt dam according to claim 8 comprises the following steps: S1. Adjust the height of the concrete stopgate according to flood standards; S2. Adjust the height of the concrete stopgate to block flooding and increase the height of the clean water surface without siltation; S3, clean water without siltation passes through the top of the concrete stop gate and enters the space enclosed by the breast wall and the concrete stop gate. The clean water in the space falls into the drop pit through the working gate. S4. The clean water in the plunge pit without siltation is discharged through the outlet.

10. The method for operating a sluice gate for taking in and releasing water from a silt dam according to claim 9, characterized in that: The specific process of S1 is: when the number of reinforced concrete door panels N0 put into use is less than 1 / 2 of the total number of reinforced concrete door panels N, that is, N0<0.5N, and when a flood below the design flood standard occurs or no flood occurs, the concrete stacked beam door top elevation is kept between 2-3m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale is about to or has reached the design flood, the concrete stacked beam door top elevation is kept at more than 3m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale reaches or exceeds the check flood, the concrete stacked beam door top elevation is kept higher than the real-time sedimentation elevation when the sluice is in operation by 0-1m; When the number of reinforced concrete gate panels N0 put into use is not less than 1 / 2 of the total number of stacked beam gate panels N, that is, N0 ≥ 0.5N, and when a flood occurs below the design flood standard or no flood occurs, the top elevation of the concrete stacked beam gate is always maintained at 1-2m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale is about to or has reached the design flood, the top elevation of the concrete stacked beam gate is always maintained at more than 2m above the real-time sedimentation elevation when the sluice is in operation; when the flood scale reaches or exceeds the verification flood, the top elevation of the concrete stacked beam gate is maintained at 0-1m higher than the real-time sedimentation elevation when the sluice is in operation.

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