Regulation and storage type water storage silt dam and using method thereof

Abstract

The invention discloses a regulation and storage type water storage silt dam and a using method thereof, and relates to the field of hydraulic engineering, the regulation and storage type water storage silt dam comprises a dam body, the dam body is of a trapezoidal section concrete structure, a water storage cavity is formed in the dam body, and a filter body and a stilling pool are arranged on one side of an upstream dam slope of the dam body; the stilling pool is used for precipitating and layering the water body filtered by the filter body; the regulation and storage type water storage silt dam provided by the invention not only has the function of stopping flood, but also can store clear water obtained by filtering and precipitating through the filter body and the stilling basin by the water storage cavity in the silt dam, so that flood and rainwater which are high in silt content and difficult to use are effectively utilized, and the construction of the regulation and storage type water storage silt dam is very convenient to use. According to the utility model, the function of the original silt dam is exerted, the function of the reservoir is also exerted, the problem of water shortage of slope cropland, economic forests and upstream silt crops is solved to a certain extent, favorable conditions are created for intensive saving and utilization of water resources, and the problem of uneven distribution of the water resources is solved.

Description

Technical Field

[0001] This invention relates to water conservancy engineering technology, specifically to a regulating and silt-retaining dam and its usage method. Background Technology

[0002] The Loess Plateau region in Northwest China, with its unique arid and semi-arid climate, characterized by high mountains, steep slopes, and deep gullies, experiences extremely low annual precipitation, primarily concentrated in the form of torrential rains from July to September. This precipitation pattern results in short-duration, high-intensity rainfall, with torrential rains and their runoff carrying large amounts of sediment, causing severe soil erosion. Rainwater erosion of slopes not only damages crop root systems but also leads to significant soil loss, consequently impacting crop yields. Simultaneously, sediment-laden floods pose a serious threat to villages, roads, farmland, and riverbeds, causing river siltation and blockages, and posing a significant risk to the lives and property of the local population.

[0003] To effectively intercept sediment, conserve soil and water, and increase arable land, the state has constructed numerous silt-retaining dams in the gullies of the Loess Plateau in Northwest China. The construction of these dams has, to some extent, controlled soil erosion and reduced the amount of sediment entering the Yellow River. However, despite their significant role in soil conservation, silt-retaining dams still have obvious shortcomings in the intensive and economical use of water resources.

[0004] In arid and semi-arid mountainous areas, increasing and effectively utilizing water resources plays a crucial role in improving economic and ecological benefits. Conserving water while protecting soil is key to improving living conditions and promoting regional economic and social development. Currently, the main methods for preventing soil erosion and utilizing water resources in the arid and semi-arid mountainous areas of the Loess Plateau in Northwest China are gully management projects, among which the construction of silt-retention dams is one of the most direct and effective methods.

[0005] However, traditional silt-retention dams, due to their small controlled area and project scale, high location, simple structure, and low flood control standards, generally lack seepage prevention structures and do not consider water storage functions. This leads to water shortages for crops and other vegetation after the flood season, severely impacting the overall benefits of silt-retention dams. Simultaneously, it reduces public enthusiasm for the construction and maintenance of silt-retention dams, hindering the construction of high-standard farmland and the promotion of the "small watershed+" development model in the arid and semi-arid mountainous areas of the Loess Plateau in Northwest China.

[0006] Therefore, in view of the shortcomings of existing silt-retaining dams in water resource utilization, it is particularly necessary to invent a regulating and storing silt-retaining dam that can both intercept sediment and regulate and store water, as well as its usage method. Summary of the Invention

[0007] To address the aforementioned problems, the present invention aims to provide a regulating and silt-retaining dam and its usage method, which has significant soil conservation and water storage effects, and solves the prominent problems of traditional homogeneous earth dams, such as simple structure, low flood control standards, lack of water storage function, and only soil conservation without water storage.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a regulating and silting dam, comprising a dam body, the dam body being a trapezoidal cross-section concrete structure, and a water storage cavity being provided inside the dam body;

[0009] A filter body and a stilling basin are installed on the upstream slope of the dam. The filter body is used to filter the water coming from the upstream, and the stilling basin is used to settle and stratify the water filtered by the filter body.

[0010] An inlet is provided on the upstream slope of the dam body, which connects the interior of the stilling basin and the interior of the water storage chamber. An inlet valve is provided inside the inlet. An outlet is provided on the downstream slope of the dam body, which is used to discharge water from the water storage chamber. An outlet valve is provided inside the outlet. Both the inlet and outlet are equipped with reverse filter screens.

[0011] The dam body is equipped with a water level sensor and a water level control terminal. The water level sensor is used to monitor the water level in the water storage chamber, and the water level control terminal is used to control the opening and closing of the outlet valve and the inlet valve.

[0012] A directional water intake is provided at the bottom of the downstream slope of the dam body for drawing water from the water storage chamber.

[0013] Furthermore, a grid-shaped slope protection is installed on both sides of the dam body, with several grass blocks and several drainage ditches installed on the grid-shaped slope protection. The ends of the inlet and outlet are respectively connected to a drainage ditch on one side.

[0014] Furthermore, there are several inlets and outlets, and the inlets and outlets are distributed in multiple layers along the height of the water storage cavity from low to high. The inlets and outlets in each layer are distributed parallel to the length of the dam body.

[0015] Furthermore, the directional water intake is located between the two layers of outlets at the bottom of the dam slope.

[0016] Furthermore, the inlet and outlet are set at an angle not exceeding °, and the height of the inlet end of both the inlet and outlet is higher than the height of the outlet end.

[0017] Furthermore, a maintenance well is provided at the top of the dam body, and the lower end of the maintenance well is connected to the interior of the water storage chamber. A maintenance ladder is provided inside the maintenance well.

[0018] Both the water level sensor and the water level control terminal are located at the maintenance well, and the water level sensor monitors the water level in the water storage chamber at a height no lower than the height of the inlet and outlet of the highest layer.

[0019] Furthermore, a waterproof layer is provided on the inner wall of the water storage cavity, and several load-bearing columns are installed inside the water storage cavity.

[0020] Furthermore, the filter body includes a gabion mesh, a boulder layer, a medium gravel layer, and a fine sand layer. The gabion mesh wraps around the boulder layer, the medium gravel layer, and the fine sand layer, and the interior of the gabion mesh is filled with the boulder layer, the medium gravel layer, and the fine sand layer from the outside to the inside.

[0021] Furthermore, the stilling basin is composed of a filter body, a dam slope, and a dam foundation. After sedimentation and energy dissipation, the water in the stilling basin is divided into a clear water layer and a sedimentation layer.

[0022] A method for using a regulating and silt-retaining dam, applicable to the aforementioned regulating and silt-retaining dam, includes the following steps:

[0023] a. When water comes in from upstream of the dam, the water passes through a filter and undergoes sedimentation and stratification in a stilling basin set up upstream of the dam to obtain a clear water layer and a sedimentation layer;

[0024] b. The water level control terminal is used to centrally regulate the water inlet and outlet of the dam body upstream and downstream. During regulation, the opening and closing of the water inlet valve and the water outlet valve are controlled based on the signal interaction between the water level sensor and the water level control terminal.

[0025] c. When the water level in the clear water layer reaches the minimum height of the inlet, the inlet valve in the inlet is opened using the water level control terminal, while the outlet valve in the outlet remains closed. When the water level inside the storage chamber reaches a certain height, the opening and closing status of the inlet valve in the inlet is adjusted using the water level control terminal. The directional water intake is not controlled by the water level control terminal and can freely draw water.

[0026] d. After water storage is complete, close all inlets and outlets; during the storage process, adjust the water level and volume by coordinating the water level control terminal with the directional water intake.

[0027] Compared with the prior art, the water storage and silt-retention dam and its usage method provided by the present invention have the following beneficial effects:

[0028] 1. The regulating and storage silt-retaining dam not only has the function of blocking floods, but also the internal water storage chamber can store clear water obtained by filtration and sedimentation through the filter body and stilling basin. This allows floods and rainwater with high sediment content that are difficult to use to be effectively utilized. The construction of regulating and storage silt-retaining dams not only gives full play to the function of the original silt-retaining dam, but also the function of the reservoir. To a certain extent, it solves the problem of water shortage in sloping farmland, economic forests and upstream silt crops, creates favorable conditions for the intensive and economical use of water resources, and solves the problem of uneven distribution of water resources.

[0029] 2. Several inlets and outlets controlled by water level control terminals are set up upstream and downstream of the dam. When upstream water flows in or when heavy rain occurs, the inlets and outlets are regulated by the water level control terminals. This achieves the regulation and utilization of floods and heavy rain and effectively prevents sediment from entering the water storage chamber. It realizes intelligent management and precise regulation of water flow. Through the water level control terminals, the inlets and outlets can be remotely regulated according to actual needs, which improves the efficiency of water resource utilization.

[0030] 3. By incorporating a filter body and stilling basin, the dam body prevents floodwater with high sediment content from entering the water storage chamber through the inlet. Instead, the clear water with lower sediment content, after filtration and sedimentation, enters the water storage chamber through the inlet's reverse filter screen and control valve, ensuring that the water stored in the water storage chamber is clear water for convenient subsequent use.

[0031] 4. The dam body is equipped with inspection wells and internal water level control terminals and inspection ladders, which facilitates the observation of water quality and quantity and the maintenance of the dam body when there is no water, thus improving the maintenance efficiency and service life of the silt-retaining dam.

[0032] 5. Fixed-shape grass blocks are set in the grid-shaped slope protection trenches upstream and downstream of the dam. The grass blocks are prefabricated grass blocks made of grass seeds, organic matter, soil and other mixtures. This effectively prevents soil erosion and enhances the landscape effect of the dam slope protection, which is in line with the concept of ecological and environmental protection.

[0033] 6. The dam body is made of concrete, which is structurally stable, has a long service life, and can withstand the impact and erosion of floods, thus ensuring the safety and reliability of the silt-retention dam.

[0034] 7. The directional water intakes set in the dam body provide convenience for people to draw water at any time to irrigate crops and other vegetation, thus improving the convenience of water resource utilization. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0036] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0037] Figure 2 Provided for embodiments of the present invention Figure 1 Enlarged diagram of point A(B) in the diagram;

[0038] Figure 3 Provided for embodiments of the present invention Figure 1 Enlarged diagram of point C in the diagram;

[0039] Figure 4 Provided for embodiments of the present invention Figure 1 Enlarged diagram of point D in the diagram;

[0040] Figure 5 Provided for embodiments of the present invention Figure 1 Enlarged diagram of point E in the diagram;

[0041] Figure 6 Provided for embodiments of the present invention Figure 1 Enlarged diagram of point F in the diagram.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1. Dam body; 2. Grass blocks; 3. Inlet; 4. Outlet; 5. Grid-shaped slope protection; 6. Drainage ditch; 7. Directional intake; 8. Waterproof layer; 9. Reverse filter screen; 10. Outlet valve; 11. Water storage chamber; 12. Load-bearing column; 13. Dam foundation; 14. Water level control terminal; 15. Water level sensor; 16. Maintenance ladder; 17. Maintenance well; 18. Inlet valve; 19. Clear water layer; 20. Sedimentation layer; 21. Stilling basin; 22. Fine sand; 23. Medium gravel; 24. Rock boulders; 25. Gabion mesh; 26. Filter media. Detailed Implementation

[0044] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0045] Example 1: Please refer to Figures 1 to 6 A regulating water storage and siltation dam includes a dam body 1, which is a trapezoidal cross-section concrete structure, and a water storage cavity 11 is provided inside the dam body 1.

[0046] A filter body 26 and a stilling basin 21 are installed on the upstream slope side of the dam body 1. The filter body 26 is used to filter the water coming from the upstream, and the stilling basin 21 is used to settle and stratify the water filtered by the filter body 26.

[0047] An inlet 3 is provided on the upstream slope of the dam body 1. The inlet 3 connects the interior of the stilling basin 21 and the interior of the water storage chamber 11. An inlet valve 18 is provided inside the inlet 3. An outlet 4 is provided on the downstream slope of the dam body 1. The outlet 4 is used to discharge the water in the water storage chamber 11. An outlet valve 10 is provided inside the outlet 4. A reverse filter screen 9 is provided inside both the inlet 3 and the outlet 4.

[0048] A water level sensor 15 and a water level control terminal 14 are installed on the dam body 1. The water level sensor 15 is used to monitor the water level in the water storage chamber 11, and the water level control terminal 14 is used to control the opening and closing of the outlet valve 10 and the inlet valve 18.

[0049] A directional water intake 7 is provided at the bottom of the downstream slope of the dam body 1 for drawing water from the water storage chamber 11.

[0050] Because existing silt-retaining dams have small controlled areas and project scales, are located at high altitudes, have simple structures, and low flood control standards, they generally do not have seepage prevention bodies or consider water storage. As a result, after the flood season, crops and other vegetation suffer from water shortages, which affects the comprehensive benefits of silt-retaining dams. In other words, existing silt-retaining dams cannot achieve water storage; they can only conserve soil and cannot play a role in water storage.

[0051] Therefore, this application provides a water storage chamber 11 inside the dam body 1. Upstream water is filtered by the filter body 26 and enters the stilling basin 21 for sedimentation and stratification. Then, the water level control terminal 14 controls the inlet valve 18 in the inlet 3 to open and the outlet valve 10 in the outlet 4 to close. The settled water flows into the water storage chamber 11, thus playing a water storage role. When water needs to be taken, water can be taken from the directional water intake 7, thereby effectively utilizing rainwater and floodwater that are difficult to use while ensuring the normal water retention and siltation of the dam body 1.

[0052] The water storage and silt-retention dam proposed in this application not only fulfills the function of the original silt-retention dam but also functions as a reservoir, enabling the effective use of floodwaters that are difficult to utilize. To a certain extent, it solves the water shortage problem of sloping farmland, economic forest land, and upstream silt-retention crops, creating favorable conditions for the intensive and economical use of water resources. The construction of intelligent water storage and silt-retention dams will effectively solve the problem of insufficient water use in mountainous sloping farmland and economic forest land, providing necessary assistance for social and economic development.

[0053] In one embodiment of the present invention, the outlet valve 10 and the inlet valve 18 can be selected from electric ball valves, electric butterfly valves, solenoid valves, etc.

[0054] Please see Figures 1 to 2In one embodiment of the present invention, a grid-shaped slope protection 5 is provided on both sides of the dam body 1. Several grass blocks 2 and several drainage ditches 6 are provided on the grid-shaped slope protection 5. The ends of the inlet 3 and the outlet 4 are respectively connected to a drainage ditch 6 on one side.

[0055] The grass block 2 is a prefabricated grass block 2 made of grass seeds, organic matter, soil and other mixtures. The prefabricated grass block 2 can effectively prevent soil erosion and enhance the landscape effect of the slope protection of the dam body 1.

[0056] In one embodiment of the present invention, a plurality of inlets 3 and outlets 4 are provided, and the plurality of inlets 3 and outlets 4 are distributed in multiple layers from low to high along the height direction of the water storage cavity 11. The plurality of inlets 3 and outlets 4 in each layer are distributed parallel along the length direction of the dam body 1, so as to facilitate the entry of water into the water storage cavity 11 and the discharge of water from the water storage cavity 11.

[0057] Please see Figure 3 In one embodiment of the present invention, multiple directional water intakes 7 can be provided. The directional water intakes 7 are located between two layers of water outlets 4 at the bottom of the dam slope of the dam body 1. The directional water intakes 7 are not controlled by the water level control terminal 14 and can freely draw water.

[0058] Specifically, the directional water intake 7 can be configured to include a water intake pipe, a valve, and a filter screen. One end of the water intake pipe is connected to the inside of the water storage chamber 11. The valve and the filter screen are installed inside the water intake pipe. By controlling the opening and closing of the valve, the drainage of the water intake pipe can be controlled, so that water can be drawn from the directional water intake 7 by gravity flow.

[0059] A water pump can also be installed inside the water storage chamber 11. The outlet of the water pump is connected to the water intake pipe, and the water pump is used to draw water stored in the water storage chamber 11.

[0060] In one embodiment of the present invention, the inlet 3 and the outlet 4 are inclined, with an inclination angle of no more than 30°, and the height of the inlet end of the inlet 3 and the outlet 4 is higher than the height of the outlet end, so as to facilitate the water to enter the water storage chamber 11 through the inlet 3 and the water to be discharged from the water storage chamber 11 through the outlet 4.

[0061] Please see Figure 4 In one embodiment of the present invention, a maintenance well 17 is provided on the top of the dam body 1. The lower end of the maintenance well 17 is connected to the interior of the water storage chamber 11. A maintenance ladder 16 is provided inside the maintenance well 17. The purpose of setting up the maintenance well 17 and the maintenance ladder 16 is to enable observers to check the water quality and water quantity and to facilitate maintenance when the dam body 1 is dry.

[0062] Both the water level sensor 15 and the water level control terminal 14 are located at the inspection well 17. Both the water level sensor 15 and the water level control terminal 14 are fixedly installed on the inner wall of the inspection well 17. The water level sensor 15 monitors the water level in the water storage chamber 11 at a height no lower than the height of the inlet 3 and outlet 4 of the highest layer, so as to control the opening and closing of the inlet 3 and outlet 4 by the water level change.

[0063] Please see Figure 1 In one embodiment of the present invention, a waterproof layer 8 is provided on the inner wall of the water storage cavity 11 to prevent water leakage, and a number of load-bearing columns 12 are provided inside the water storage cavity 11 to enhance the strength of the dam body 1.

[0064] Please see Figure 6 In one embodiment of the present invention, the filter body 26 includes a gabion mesh 25, a boulder layer 24, a medium gravel layer 23, and a fine sand layer 22. The gabion mesh 25 wraps the boulder layer 24, the medium gravel layer 23, and the fine sand layer 22. The gabion mesh 25 is filled with the boulder layer 24, the medium gravel layer 23, and the fine sand layer 22 from the outside to the inside, so that floodwater with high silt content will not directly enter the interior of the water storage chamber 11 through the inlet 3, and the water stored in the water storage chamber 11 is clean water.

[0065] Please see Figure 5 In one embodiment of the present invention, the stilling pool 21 is composed of a filter body 26, a dam slope and a dam foundation 13. After sedimentation and energy dissipation, the water in the stilling pool 21 is divided into a clear water layer 19 and a sedimentation layer 20.

[0066] In one embodiment of the present invention, the water level control terminal 14 is a controller. Any type of controller can be selected and connected to the outlet valve 10 and the inlet valve 18 in this application to control the opening and closing of the outlet valve 10 and the inlet valve 18. This part is prior art. Here, a microcontroller can be provided as a control unit for demonstration. The microcontroller in this embodiment is a typical embedded microcontroller unit, which consists of an arithmetic unit, a controller, a memory, input / output devices, etc., equivalent to a miniature computer. Compared with the general-purpose microprocessors used in personal computers, it emphasizes self-sufficiency (no external hardware required) and cost savings. Its biggest advantage is its small size, which can be placed inside the instrument, but it has small storage capacity, simple input / output interfaces, and low power consumption.

[0067] Example 2:

[0068] Please see Figures 1 to 6 A method for using a regulating and silt-retaining dam, applicable to the aforementioned regulating and silt-retaining dam, includes the following steps:

[0069] a. When water comes in from upstream of dam body 1, the water passes through filter body 26 and undergoes sedimentation and stratification in stilling basin 21 set up upstream of dam body 1 to obtain clear water layer 19 and sedimentation layer 20.

[0070] b. The water level control terminal 14 is used to centrally regulate the water inlet 3 and water outlet 4 upstream and downstream of the dam body 1. During regulation, the water level sensor 15 and the water level control terminal 14 are used to control the opening and closing of the water inlet valve 18 in the water inlet 3 and the water outlet valve 10 in the water outlet 4.

[0071] c. When the water level of the clear water layer 19 reaches the minimum height of the inlet 3, the inlet valve 18 inside the inlet 3 is opened using the water level control terminal 14, while the outlet valve 10 inside the outlet 4 remains closed. When the water level inside the storage chamber 11 reaches a certain height, the opening and closing status of the inlet valve 18 inside the inlet 3 is adjusted using the water level control terminal 14. The directional water intake 7 is not controlled by the water level control terminal 14 and can freely draw water.

[0072] d. After water storage is completed, close all inlets 3 and outlets 4; during the storage process, adjust the water level and water volume by coordinating the water level control terminal 14 with the directional water intake 7.

[0073] The silt-retaining dam 1 is used to impound water, and the water storage chamber 11 inside the dam 1 is used to store water. When storing water, the water is injected into the water storage chamber 11 through the water inlet 3 on the dam 1. When using water, water is drawn from the directional water intake 7 by gravity flow. The clarity of the water is observed manually according to the flood volume. The water level control terminal 14 is used to adjust the water inlet 3 so that the filtered and settled clear water flows into the water storage chamber 11 through the water inlet 3, ensuring that the water stored in the water storage chamber 11 is clear water that can be used at any time.

[0074] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A regulating and conserving reservoir earth dam, characterized by, The dam body (1) is a trapezoidal cross-section concrete structure, and a water storage cavity (11) is arranged in the dam body (1); A filter body (26) for filtering upstream water and a stilling basin (21) for sedimentation and stratification of water filtered by the filter body (26) are arranged on one side of the upstream dam slope of the dam body (1); A water inlet (3) is arranged on the upstream dam slope of the dam body (1), the water inlet (3) is connected with the inside of the stilling basin (21) and the inside of the water storage cavity (11), a water inlet valve (18) is arranged in the water inlet (3), a water outlet (4) is arranged on the downstream dam slope of the dam body (1), the water outlet (4) is used for discharging water in the water storage cavity (11), a water outlet valve (10) is arranged in the water outlet (4), and a filter screen (9) is arranged in the water inlet (3) and the water outlet (4). A water level sensor (15) and a water level control terminal (14) are arranged on the dam body (1), the water level sensor (15) is used for monitoring the water level height in the water storage cavity (11), and the water level control terminal (14) is used for controlling the opening and closing of the water outlet valve (10) and the water inlet valve (18). A directional water outlet (7) for taking water in the water storage cavity (11) is arranged at the bottom end of the downstream dam slope of the dam body (1).

2. A regulating and conserving reservoir dam according to claim 1, characterized in that, A plurality of cross-shaped slope protection (5) are arranged on the two sides of the dam body (1), a plurality of grass blocks (2) and a plurality of drainage ditches (6) are arranged on the cross-shaped slope protection (5), and the ends of the water inlet (3) and the water outlet (4) respectively penetrate one drainage ditch (6) on one side.

3. The dam according to claim 1, wherein A plurality of water inlets (3) and a plurality of water outlets (4) are arranged, and the plurality of water inlets (3) and the plurality of water outlets (4) are distributed in multiple layers from low to high along the height direction of the water storage cavity (11), and the plurality of water inlets (3) and the plurality of water outlets (4) in each layer are distributed in parallel along the length direction of the dam body (1).

4. A regulating and conserving reservoir dam according to claim 3, wherein, The directional water outlet (7) is arranged between the two layers of water outlets (4) at the bottom end of the dam slope of the dam body (1).

5. The dam according to claim 1, wherein The water inlet (3) and the water outlet (4) are arranged in an inclined manner, the inclination angle is not greater than 30°, and the height of the inlet end of the water inlet (3) and the water outlet (4) is higher than that of the outlet end.

6. The dam according to claim 1, wherein A maintenance well (17) is arranged at the top of the dam body (1), the lower end of the maintenance well (17) is connected with the inside of the water storage cavity (11), and a maintenance ladder (16) is arranged in the maintenance well (17); The water level sensor (15) and the water level control terminal (14) are arranged at the maintenance well (17), and the monitoring height of the water level sensor (15) for the water level in the water storage cavity (11) is not lower than the height of the water inlet (3) and the water outlet (4) in the highest layer.

7. The dam according to claim 1, wherein A waterproof layer (8) is arranged on the inner wall of the water storage cavity (11), and a plurality of bearing columns (12) are arranged in the water storage cavity (11).

8. The dam according to claim 1, wherein The filter body (26) comprises gabion net (25), block stone layer (24), medium gravel layer (23) and fine sand layer (22), the gabion net (25) wraps the block stone layer (24), medium gravel layer (23) and fine sand layer (22), and the gabion net (25) is filled with the block stone layer (24), medium gravel layer (23) and fine sand layer (22) from outside to inside in sequence.

9. The dam according to claim 1, wherein The stilling basin (21) is composed of the filter body (26), dam slope and dam foundation (13), and the water in the stilling basin (21) is divided into clear water layer (19) and sediment layer (20) after sedimentation.

10. A method of using a regulating and conserving storage water barrier, characterized by, The method is suitable for the regulation and storage type water storage check dam according to any one of claims 1-9, and comprises the following steps: a. when the water flows upstream of the dam body (1), the water flows through the filter body (26) and is deposited in the stilling basin (21) arranged upstream of the dam body (1) to obtain the clear water layer (19) and the sediment layer (20); b. the water inlet (3) and the water outlet (4) upstream and downstream of the dam body (1) are centrally controlled by the water level control terminal (14), and the opening and closing of the water inlet valve (18) in the water inlet (3) and the water outlet valve (10) in the water outlet (4) are controlled according to the signal interaction between the water level sensor (15) and the water level control terminal (14) during the control; c. when the water level of the clear water layer (19) reaches the lowest height of the water inlet (3), the water inlet valve (18) in the water inlet (3) is opened by the water level control terminal (14), and the water outlet valve (10) in the water outlet (4) remains in the closed state; when the water level inside the water storage cavity (11) reaches a certain height, the opening and closing state of the water inlet valve (18) in the water inlet (3) is adjusted by the water level control terminal (14); The directional water inlet (7) is not controlled by the water level control terminal (14) and can freely take water; d. after the water storage is completed, all the water inlets (3) and water outlets (4) are closed; during the regulation and storage process, the water level and water volume are adjusted by the cooperation of the water level control terminal (14) and the directional water inlet (7).

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