Retaining wall structure capable of measuring leakage amount of earth and rockfill dam body

Abstract

The utility model discloses a retaining wall structure capable of measuring leakage amount of an earth and rockfill dam body, which relates to the technical field of water conservancy and hydropower engineering and comprises an earth and rockfill dam, seepage water of the earth and rockfill dam is intercepted by a retaining wall and is drained and collected to a weir groove of a measuring weir by a water collecting ditch in the center of a river valley; a water measuring weir plate, a set of electric measuring weir flow meter and a water gauge are arranged in the rectangular groove to form a water measuring weir groove; when the leakage water of the earth and rockfill dam body is collected to a certain degree, the leakage water can flow out from the weir groove of the measuring weir, data are obtained through an instrument arranged in the weir groove of the measuring weir, and the leakage water is collected after the specific leakage amount is obtained. The downstream dam foot concrete retaining wall of the earth and rockfill dam has the effect of measuring leakage water of the dam body of the earth and rockfill dam while exerting the original function, the leakage water of the dam body of the earth and rockfill dam can be intensively exposed, and the leakage water can be conveniently guided and drained to the rectangular groove.

Description

Technical Field

[0001] The utility model relates to the technical field of water conservancy and hydropower engineering, in particular to a retaining wall structure capable of measuring the leakage of an earth-rock dam body. Background Art

[0002] During the construction and operation periods of water conservancy and hydropower projects, safety monitoring design can not only guide the construction, provide feedback and verify the design of water conservancy and hydropower project buildings, but also grasp and monitor the operating status of the buildings, and provide effective data for monitoring the safe operation of the buildings.

[0003] The leakage monitoring of earth-rock dam is a very important monitoring content in earth-rock dam. It is an important indicator to check whether the anti-seepage effect of the dam anti-seepage structure and the foundation treatment meet the requirements, or it is an important basis for judging the safety of the dam. The conventional methods for monitoring the leakage of earth-rock dams are: setting up a water measuring weir at the downstream dam foot for monitoring; when the flow is small, the volumetric method can also be used for manual observation directly; or setting up a water measuring weir in the intercepting ditch or drainage ditch on both sides of the downstream left and right banks for monitoring.

[0004] In order to prevent the downstream tailwater from scouring the dam foot, to provide a certain support to the downstream dam slope and to prevent soil collapse, a concrete retaining wall is usually arranged at the downstream dam foot of the earth-rock dam. Summary of the invention

[0005] The purpose of the utility model is to design a retaining wall structure that can measure the leakage of the earth-rock dam body in view of the lack of a structure in the prior art that effectively combines the monitoring of the leakage of the earth-rock dam body with the concrete retaining wall at the downstream foot of the earth-rock dam. The utility model improves the traditional concrete retaining wall structure so that the retaining wall can not only play its original function, but also have the function of measuring the leakage of the earth-rock dam body, thereby reducing the amount of engineering work, improving work efficiency, and thus reducing engineering investment and shortening the construction period.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is a retaining wall structure that can measure the leakage of the earth-rock dam body, including: an earth-rock dam, a retaining wall, a drainage longitudinal slope, a water-measuring weir and a water-collecting ditch. The downstream face of the earth-rock dam is provided with a retaining wall, and a water-collecting ditch is provided on the top face of the retaining wall. The length of the water-collecting ditch matches the central width of the river valley, and a water-measuring weir and a water-collecting ditch are provided on the side of the water-collecting ditch away from the earth-rock dam.

[0007] Preferably, an electric weir flow meter, a water ruler and a water measuring weir plate are sequentially arranged in the weir groove along the water flow direction.

[0008] Preferably, the weir plate of the water measuring weir is a right-angled triangle arranged on the downstream surface of the weir groove of the water measuring weir, and the non-right-angled sides of the weir plate of the water measuring weir are arranged flush with the top of the weir groove of the water measuring weir.

[0009] Preferably, the retaining wall is perpendicular to the axis direction of the earth-rock dam, and the top width of the retaining wall is 1.1m, the water-facing surface is vertically downward, and the water-receiving surface has a slope ratio of 1:0.5.

[0010] Preferably, a drainage longitudinal slope is set at the bottom of the downstream surface of the retaining wall according to engineering requirements, the drainage longitudinal slope thickness is 1.5m, and the longitudinal slope is set to a slope ratio of 1:4 to 1:7.

[0011] Preferably, the water collecting ditch has an inverted trapezoidal groove structure.

[0012] Preferably, the retaining wall and drainage longitudinal slope are made of C20 concrete.

[0013] Beneficial effects of the utility model:

[0014] 1. The utility model digs a water collection ditch in the center of the river valley, opens a water measuring weir groove on the retaining wall at the corresponding position, and installs corresponding instruments and equipment. The concrete retaining wall at the downstream foot of the earth-rock dam can measure the seepage water of the earth-rock dam body while playing its original function, thereby realizing the concentrated exposure of the seepage water of the earth-rock dam body and facilitating the drainage of the seepage water to the rectangular groove.

[0015] 2. The utility model sets up structures such as earth-rock dam and retaining wall. Water leakage from the earth-rock dam body is intercepted by the retaining wall and drained by the drainage longitudinal slope to the collection ditch in the center of the valley, ensuring that the water flows smoothly into the rectangular groove opened on the retaining wall and flows out.

[0016] 3. The utility model has the effect of measuring water leakage of the earth-rock dam body by sequentially arranging an electric weir flow meter, a water gauge and a water-measuring weir plate in the weir groove along the water flow direction. When the water leakage of the earth-rock dam body is collected to a certain extent, it can be discharged to the riverbed from the weir groove of the water-measuring weir, after obtaining the leakage data of the earth-rock dam body through the electric weir flow meter arranged in the weir groove or manually reading the stainless steel water gauge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Other features, purposes and advantages of the present invention will become more apparent by reading the detailed description of the non-limiting embodiments made with reference to the following drawings. The drawings are only used for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. In addition, the same reference symbols are used to represent the same parts throughout the drawings.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a top view of the overall structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the local structure of the utility model.

[0021] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0022] 1. Earth-rock dam; 2. Retaining wall; 3. Drainage longitudinal slope; 4. Slope water-measuring weir and weir groove; 5. Water-measuring weir and weir plate; 6. Electric weir flow meter; 7. Water gauge; 8. Drainage ditch. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model is further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific implementation method described here is only an optimal embodiment of the utility model, which is only used to explain the utility model and does not limit the protection scope of the utility model. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] Example 1: Figure 1 and Figure 2 As shown, a retaining wall structure capable of measuring the leakage of an earth-rock dam body comprises an earth-rock dam 1, a retaining wall 2, a drainage longitudinal slope 3, a water-measuring weir trough 4 and a water-collecting ditch 8. The retaining wall 2 is arranged on the downstream surface of the earth-rock dam 1, and the water-collecting ditch 8 is arranged on the top surface of the retaining wall 2. The length of the water-collecting ditch 8 matches the central width of the river valley, and a water-measuring weir trough 4 is opened on the side of the water-collecting ditch 8 away from the earth-rock dam 1.

[0025] In this embodiment, a water collection ditch 8 is dug in the center of the river valley, and a water measuring weir groove 4 is opened on the retaining wall 2 at the corresponding position. After the corresponding instruments and equipment are installed, the concrete retaining wall 2 at the downstream foot of the earth-rock dam 1 can measure the leakage of the earth-rock dam body while performing its original function, thereby realizing the concentrated exposure of the leakage of the earth-rock dam body and facilitating the drainage of the leakage water into the rectangular groove.

[0026] In this embodiment, structures such as an earth-rock dam 1 and a retaining wall 2 are provided. Water seeping from the earth-rock dam body is intercepted by the retaining wall 2 and drained by the drainage longitudinal slope 3 to be collected in the water collection ditch 8 in the center of the river valley, ensuring that the water flows smoothly into the rectangular groove opened on the retaining wall 2 and flows out.

[0027] Specifically, Figure 3 As shown, an electric weir flow meter 6, a water ruler 7 and a water weir plate 5 are sequentially arranged in the weir groove 4 along the water flow direction.

[0028] Specifically, the weir plate 5 of the water measuring weir is a right-angled triangle arranged on the downstream surface of the weir groove 4 of the water measuring weir, and the non-right-angled sides of the weir plate 5 of the water measuring weir are arranged flush with the top of the weir groove 4 of the water measuring weir.

[0029] This embodiment has the effect of measuring water leakage of the earth-rock dam body by sequentially arranging an electric weir flow meter 6, a water gauge 7 and a water measuring weir plate 5 in the water measuring weir groove 4 along the water flow direction. When the water leakage of the earth-rock dam body reaches a certain level, the earth-rock dam body leakage data can be obtained by reading the electric weir flow meter 6 arranged in the water measuring weir groove 5 or manually reading the stainless steel water gauge 7.

[0030] Specifically, the retaining wall 2 is perpendicular to the axial direction of the earth-rock dam 1, and the top width of the retaining wall 2 is 1.1 m, the water-facing surface is vertically downward, and the water-receiving surface has a slope ratio of 1:0.5.

[0031] Specifically, a drainage longitudinal slope 3 is set at the bottom of the downstream surface of the retaining wall 2 according to engineering requirements. The drainage longitudinal slope 3 has a thickness of 1.5 m and a slope ratio of 1:4 to 1:7.

[0032] Specifically, the water collecting ditch 8 is an inverted trapezoidal groove structure.

[0033] Specifically, the retaining wall 2 and the drainage longitudinal slope 3 are made of C20 concrete.

[0034] Example 2, a retaining wall structure capable of measuring the leakage of an earth-rock dam body. This example is carried out on the basis of Example 1. Furthermore, a reservoir dam is an earth-rock dam 1 with a dam top elevation of 522.50 m, a maximum dam height of 120.50 m, and a downstream dam slope of 1:1.4.

[0035] In order to prevent the downstream tailwater from scouring the dam foot, and to provide a certain support for the downstream dam slope and prevent soil collapse, a trapezoidal retaining wall 2 with a top width of 1.1m, a vertically downward facing water surface and a 1:0.5 slope ratio on the back side is arranged at the downstream dam foot of the reservoir dam. The retaining wall 2 is made of C20 concrete.

[0036] A drainage longitudinal slope 3 is set at the bottom of the retaining wall 2 according to the terrain conditions. The material of the drainage longitudinal slope 3 is C20 concrete. The drainage longitudinal slope 3 is set to a structure with a left bank slope ratio of 1:4-1:7, a right bank slope ratio of 1:0.5, and a thickness of 1.5m. This can reduce the amount of excavation and filling, and can naturally collect the seepage water of the dam body to the center of the valley.

[0037] In order to realize the concentrated exposure of seepage water from the earth-rock dam body and facilitate its subsequent drainage to the rectangular trough, a water collection ditch 8 with a length matching the width of the center of the valley is dug in the center of the valley. The length of the water collection ditch 8 is 18.17m, and the top of the water collection ditch 8 is flush with the top of the retaining wall 2. It is 1.5m deep, 0.5m wide at the bottom, and 2.45m wide at the top. One side of the water collection ditch 8 is a vertical surface adjacent to the retaining wall 2, and the other side is adjacent to the dam body with a slope ratio of 1:1.3, presenting a water collection ditch 8 with an inverted trapezoidal trough structure; a rectangular trough with a depth of 1.5m, a width of 2.0m, and a length of 2.55m is opened on the top of the retaining wall 2 structure at the corresponding position of the center of the valley, and the rectangular trough can be used as the water measuring weir trough 4.

[0038] The seepage water of the earth-rock dam body is intercepted by the retaining wall 2 and drained by the water collection ditch 8 in the center of the river valley to the water measuring weir trough 4, ensuring that the water flows smoothly into the rectangular trough opened on the retaining wall and flows out; a right-angled triangle stainless steel water measuring weir plate 5, a set of electric weir flowmeters 6, and a stainless steel water ruler 7 are arranged in the rectangular trough to form the water measuring weir trough 4; when the seepage water of the earth-rock dam body is collected to a certain extent, it can be collected from the water measuring weir trough 4, and the data can be obtained by measuring the electric weir flowmeter 6 arranged in the water measuring weir trough 4 or manually measuring the stainless steel water ruler 7, and the specific leakage amount can be obtained and then the water can be gathered out, and finally the dam body seepage water is discharged to the riverbed.

[0039] The above specific implementation modes are preferred implementation modes of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation modes. All equivalent changes made in accordance with the shape, structure, and method of the present utility model are within the protection scope of the present utility model.

Claims

1. A retaining wall structure capable of measuring the leakage of an earth-rock dam, characterized in that: The invention comprises an earth-rock dam (1), a retaining wall (2), a drainage longitudinal slope (3), a water-measuring weir groove (4) and a water-collecting ditch (8). The downstream surface of the earth-rock dam (1) is provided with a retaining wall (2), a water-collecting ditch (8) is provided on the top surface of the retaining wall (2), the length of the water-collecting ditch (8) matches the central width of the river valley, and a water-measuring weir groove (4) is provided on the side of the water-collecting ditch (8) away from the earth-rock dam (1).

2. A retaining wall structure capable of measuring leakage of an earth-rock dam according to claim 1, characterized in that: An electric weir flow meter (6), a water ruler (7) and a water weir plate (5) are arranged in sequence in the water measuring weir groove (4) along the water flow direction.

3. A retaining wall structure capable of measuring leakage of an earth-rock dam according to claim 2, characterized in that: The water measuring weir plate (5) is a right-angled triangle arranged on the downstream surface of the water measuring weir groove (4), and the non-right-angled side of the water measuring weir plate (5) is arranged flush with the top of the water measuring weir groove (4).

4. The retaining wall structure capable of measuring the leakage of an earth-rock dam according to claim 1, characterized in that: The retaining wall (2) is perpendicular to the axial direction of the earth-rock dam (1), and the top width of the retaining wall (2) is 1.1 m, the water-facing surface is vertically downward, and the water-receiving surface has a slope ratio of 1:0.

5.

5. The retaining wall structure capable of measuring the leakage of an earth-rock dam according to claim 1, characterized in that: The drainage longitudinal slope (3) is arranged at the bottom of the downstream surface of the retaining wall (2) according to the engineering requirements. The drainage longitudinal slope (3) has a thickness of 1.5 m and a slope ratio of 1:4 to 1:

7.

6. The retaining wall structure capable of measuring the leakage of an earth-rock dam according to claim 1, characterized in that: The water collecting ditch (8) is in an inverted trapezoidal groove structure.

7. The retaining wall structure capable of measuring the leakage of an earth-rock dam according to claim 5, characterized in that: The retaining wall (2) and the drainage longitudinal slope (3) are made of C20 concrete.

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