Anti-siltation device for dam foot drainage ditch of earth and rockfill dam

Abstract

The utility model provides an earth and rockfill dam foot drainage ditch anti-siltation device, which relates to the technical field of anti-siltation, and comprises a drainage filter plate, an inner core filter plate is arranged below the drainage filter plate, and a plurality of linearly arrayed desilting cones are arranged at one end of the inner core filter plate. The middle part of the inner core filter plate is fixedly connected with a fixed lock catch, and the interior of the fixed lock catch is fixedly connected with a waterproof pull rope. The drainage ditch has the advantages that the top end of the drainage ditch is provided with the inclined filtering structure with the same inclination as the earth and rockfill dam, so that sundries sliding off from the earth and rockfill dam can slide off along the inclined direction, and the sundries sliding off from the earth and rockfill dam are prevented from being accumulated on the filtering structure for a long time to shield the filtering structure; the adjustable inner core filtering and cleaning structure is arranged between the filtering structure and the drainage ditch, and the filtering structure can be cleaned by adjusting the inner core filtering and cleaning structure, so that the filtering efficiency of the filtering structure is ensured, and the use convenience of the anti-siltation device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anti-siltation, in particular to an anti-siltation device for a drainage ditch at the foot of an earth-rock dam. Background Art

[0002] An earth-rock dam is a common water conservancy project, usually made of earth and rock materials, used to intercept water sources such as rivers and reservoirs. When the dam body is mainly made of earth and gravel, it is called an earth dam; when it is mainly made of slag, pebbles, and blasted stones, it is called a rockfill dam; when both types of local materials account for a considerable proportion, it is called an earth-rock mixed dam. Currently, earth-rock dams are the most widely used and fastest-growing dam type in dam construction worldwide. A drainage system is usually installed at the foot of an earth-rock dam to drain seepage water and rainwater from the dam body. The drainage system usually includes components such as drainage ditches, sedimentation basins, sediment outlets, and sediment discharge pipes. The drainage ditch is an important component of the system. To ensure the normal use of the drainage ditch, it is very important to prevent siltation of the drainage ditch.

[0003] CN202322152260.8 introduces an anti-siltation device for the drainage ditch at the foot of an earth-rock dam. By setting a cleaning component, the water flow inside the drainage ditch can intercept and filter debris and precipitate silt under the action of the first interception net, the sedimentation tank, and the second interception net, thereby effectively preventing the drainage ditch from being blocked by silt to ensure smooth drainage of the drainage ditch. At the same time, the first interception net and the second interception net can be cleaned, which is simple to operate to prevent excessive debris inside the first interception net and the second interception net from affecting the smooth drainage. The silt inside the sedimentation tank can be cleaned by setting a sludge suction pump, which is beneficial to the sedimentation work of the sedimentation tank. However, during use, the anti-siltation device is prone to accumulation of debris due to the flat setting of the filtering structure, which affects the efficiency of drainage. Utility Model Content

[0004] Therefore, the purpose of the present invention is to provide an anti-siltation device for a drainage ditch at the foot of an earth-rock dam, so as to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0005] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the present invention provides an anti-siltation device for the drainage ditch at the foot of an earth-rock dam, comprising an earth-rock dam body, a drainage ditch is provided at the foot of the earth-rock dam body, a protective plate that fits the earth-rock dam body is fixedly installed on the top of one end of the drainage ditch, a drainage filter plate is fixedly installed on the top of the protective plate, an inner core filter plate is provided below the drainage filter plate, a plurality of linear arrays of dredging cones are provided at one end of the inner core filter plate, a fixed lock is fixedly connected to the middle of the inner core filter plate, a waterproof tension rope is fixedly connected to the inside of the fixed lock, and a limiting ball is fixedly installed at one end of the waterproof tension rope.

[0006] Preferably, any of the above schemes is provided with a drainage groove inside the drainage ditch, a rotating groove adapted to the inner core filter plate is provided at the top of the drainage ditch, an export chute is provided on one side of the rotating groove, a scraper is movably connected inside the export chute, and a boss is provided at one end of the scraper.

[0007] The above technical solution is adopted: the drainage groove inside the drainage ditch is used to divert and discharge water, and an outlet chute is set inside the drainage ditch to facilitate the discharge of debris that invades the drainage ditch. The inside of the outlet chute can be cleaned by a scraper, and the scraper is limited by the boss to improve the stability of the scraper.

[0008] Preferably, any of the above schemes is that one end of the drainage filter plate away from the protective plate is fixedly connected to the drainage ditch, the drainage filter plate is arranged obliquely, and the drainage filter plate and the earth-rock dam body have the same inclination.

[0009] The above technical solution is adopted: the drainage filter plate is set at an angle so that the debris sliding down from the earth-rock dam body slides along the drainage filter plate, avoiding the accumulation of debris on the filter structure and blocking the filter structure, making it easier for the drainage filter structure to guide and filter the rainwater and debris on the earth-rock dam.

[0010] Preferably, any of the above schemes is provided with filter holes inside the drainage filter plates, and inner core holes are provided inside the inner core filter plates, and the filter holes and inner core holes are cross-distributed.

[0011] The above technical solution is adopted: the debris sliding on the earth-rock dam is filtered through the filter holes, so that the water flows down through the filter holes and moves to the drainage ditch, and the falling water is filtered for a second time through the inner core holes. Moreover, the inner core holes of the inner core filter plate itself are staggered with the filter holes, so that the water passing through the filter holes can flow on the inner core filter plate for a certain distance before passing through the inner core holes, thereby improving the filtration quality.

[0012] Preferably, in any of the above schemes, one end of the inner core filter plate is rotatably connected to the inside of the drainage ditch, and a fixing groove adapted to the fixing lock is provided in the middle of the inner core filter plate.

[0013] The above technical solution is adopted: an inner core filter plate is arranged on the top of the drainage ditch to filter and protect the water entering the drainage ditch, and the protective structure of the drainage ditch can be adjusted by moving the inner core filter plate.

[0014] Preferably, any of the above solutions has the following features: the position of the silt cleaning cone corresponds to the position of the filter hole; the size of the silt cleaning cone is smaller than the size of the filter hole; and the silt cleaning cone and the inner core hole are cross-distributed.

[0015] The above technical solution is adopted: a silt removal cone is set to penetrate the filter hole to remove the debris inside the filter hole, thereby ensuring the stable operation of the filter hole.

[0016] Preferably, from any of the above solutions, one end of the waterproof tension rope passes through the drainage filter plate, and the limiting ball is located on one side of the drainage filter plate.

[0017] The above technical solution is adopted: the waterproof tension rope is easily operated through the limiting ball, and the waterproof tension rope is pulled to drive the inner core filter plate to move through the fixed lock, so that the inner core filter plate can guide the debris to the outlet chute for discharge, making it easy to move and adjust the inner core filter plate.

[0018] Compared with the prior art, the advantages and beneficial effects of the present invention are as follows:

[0019] 1. An inclined filtering structure with the same slope as the earth-rock dam is set at the top of the drainage ditch, so that the debris sliding on the earth-rock dam can slide down along the inclined direction, avoiding the debris sliding on the earth-rock dam from accumulating on the filtering structure for a long time and blocking the filtering structure. An adjustable inner core filtering and cleaning structure is set between the filtering structure and the drainage ditch. The filtering structure can be cleaned by adjusting the inner core filtering and cleaning structure to ensure the filtering efficiency of the filtering structure. At the same time, a pull rope is set on the inner core filtering and cleaning structure for adjustment. The structure is simple and easy to clean, which improves the convenience of using the anti-siltation device.

[0020] 2. An oblique outlet structure is set inside the drainage ditch. The outlet structure can be used to clean the top of the drainage ditch along with the inner core filtering and cleaning structure to ensure the stability of the drainage ditch.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 It is a structural schematic diagram according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic structural diagram of a drainage ditch according to an embodiment of the present utility model;

[0025] Figure 3 This is a structural diagram of an inner core filter plate according to an embodiment of the utility model;

[0026] Figure 4 A schematic cross-sectional view of a drainage ditch according to an embodiment of the present utility model;

[0027] Figure 5 According to the embodiment of the present utility model Figure 4 Schematic diagram of the enlarged structure at A in the middle;

[0028] Among them: 1-earth-rock dam body, 2-drainage ditch, 3-protective plate, 4-drainage filter plate, 5-inner core filter plate, 6-dredging cone, 7-fixed lock buckle, 8-waterproof tension rope, 9-limiting ball, 10-filter hole, 11-inner core hole, 12-drainage trough, 13-export chute, 14-scraper, 15-boss. DETAILED DESCRIPTION

[0029] The present invention will be further described below in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the following description.

[0030] like Figure 1-5 As shown, an anti-siltation device for the drainage ditch at the foot of an earth-rock dam according to an embodiment of the utility model comprises an earth-rock dam body 1, a drainage ditch 2 is provided at the foot of the earth-rock dam body 1, a protective plate 3 fitted with the earth-rock dam body 1 is fixedly installed on the top of one end of the drainage ditch 2, a drainage filter plate 4 is fixedly installed on the top of the protective plate 3, an inner core filter plate 5 is provided below the drainage filter plate 4, a plurality of linear array dredging cones 6 are provided at one end of the inner core filter plate 5, a fixed lock buckle 7 is fixedly connected to the middle of the inner core filter plate 5, a waterproof tension rope 8 is fixedly connected to the inside of the fixed lock buckle 7, and a limiting ball 9 is fixedly installed at one end of the waterproof tension rope 8.

[0031] Preferably, any of the above schemes is that a drainage groove 12 is provided inside the drainage ditch 2, a rotating groove adapted to the inner core filter plate 5 is provided at the top of the drainage ditch 2, an outlet chute 13 is provided on one side of the rotating groove, and a scraper 14 is movably connected inside the outlet chute 13, and a boss 15 is provided at one end of the scraper 14.

[0032] The above technical solution is adopted: the drainage groove 12 inside the drainage ditch 2 is used to guide and discharge water, and an outlet chute 13 is set inside the drainage ditch 2 to facilitate the discharge of debris invading the interior of the drainage ditch 2. The scraper 14 can be used to clean the inside of the outlet chute 13, and the scraper 14 is limited by the boss 15 to improve the stability of the scraper 14.

[0033] Preferably, any of the above schemes is that one end of the drainage filter plate 4 away from the protective plate 3 is fixedly connected to the drainage ditch 2, the drainage filter plate 4 is tilted, and the drainage filter plate 4 and the earth-rock dam body 1 have the same inclination.

[0034] The above technical solution is adopted: the drainage filter plate 4 is set at an angle so that the debris sliding down from the earth-rock dam body 1 slides along the drainage filter plate 4, avoiding the accumulation of debris on the filter structure and blocking the filter structure, making it easier for the drainage filter structure to guide and filter the rainwater and debris on the earth-rock dam.

[0035] Preferably, any of the above solutions has filter holes 10 formed inside the drainage filter plate 4 and inner core holes 11 formed inside the inner core filter plate 5 , and the filter holes 10 and the inner core holes 11 are cross-distributed.

[0036] The above technical solution is adopted: the debris sliding on the earth-rock dam is filtered through the filter holes 10, so that the water flows down through the filter holes 10 and moves toward the drainage ditch 2, and the descending water is filtered for the second time through the inner core holes 11. Moreover, the inner core holes 11 of the inner core filter plate 5 are staggered with the filter holes 10, so that the water passing through the filter holes 10 can flow on the inner core filter plate 5 for a certain distance before passing through the inner core holes 11, thereby improving the quality of filtration.

[0037] Preferably, one end of the inner filter plate 5 is rotatably connected to the inside of the drain ditch 2 , and a fixing groove adapted to the fixing lock 7 is provided in the middle of the inner filter plate 5 .

[0038] The above technical solution is adopted: the inner core filter plate 5 is set on the top of the drain ditch 2 to filter and protect the water entering the drain ditch 2. The protection structure of the drain ditch 2 can be adjusted by moving the inner core filter plate 5.

[0039] Preferably, from any of the above solutions, the position of the dredging cone 6 corresponds to the position of the filter hole 10 , the size of the dredging cone 6 is smaller than the size of the filter hole 10 , and the dredging cone 6 and the inner core hole 11 are cross-distributed.

[0040] The above technical solution is adopted: a silt removal cone 6 is provided to penetrate the filter hole 10 to remove the debris inside the filter hole 10 , thereby ensuring the stable operation of the filter hole 10 .

[0041] Preferably, from any of the above solutions, one end of the waterproof tension rope 8 passes through the drainage filter plate 4 , and the limiting ball 9 is located on one side of the drainage filter plate 4 .

[0042] The above technical solution is adopted: the waterproof tension rope 8 is easily operated through the limiting ball 9, and the waterproof tension rope 8 is pulled to drive the inner core filter plate 5 to move through the fixed lock buckle 7, so that the inner core filter plate 5 can guide the debris to the outlet chute 13 for discharge, making it easy to move and adjust the inner core filter plate 5.

[0043] The utility model is a device for preventing siltation in drainage ditches at the foot of an earth-rock dam. The working principle is as follows:

[0044] After the drainage filter plate 4 filters the debris, the inner core filter plate 5 filters the water flow again, pulling the limit ball 9 to drive the waterproof tension rope 8 to move, and the waterproof tension rope 8 drives the inner core filter plate 5 to rotate through the fixed lock buckle 7, and the inner core filter plate 5 drives the silt removal cone 6 to clean the filter hole 10.

[0045] Compared with the prior art, the present invention has the following beneficial effects:

[0046] 1. An inclined filtering structure with the same slope as the earth-rock dam is set at the top of the drainage ditch 2, so that the debris sliding on the earth-rock dam can slide down along the inclined direction, avoiding the debris sliding on the earth-rock dam from accumulating on the filtering structure for a long time and blocking the filtering structure, and an adjustable inner core filtering and cleaning structure is set between the filtering structure and the drainage ditch 2. The filtering structure can be cleaned by adjusting the inner core filtering and cleaning structure to ensure the filtering efficiency of the filtering structure. At the same time, a pull rope is set on the inner core filtering and cleaning structure for adjustment. The structure is simple, cleaning is convenient, and the convenience of using the anti-siltation device is improved.

[0047] 2. An oblique outlet structure is provided inside the drain ditch 2. The outlet structure can be used to clean the top of the drain ditch 2 along with the inner core filtering and cleaning structure to ensure the stability of the drain ditch 2 in use.

Claims

1. A device for preventing siltation of a drainage ditch at the foot of an earth-rock dam, comprising an earth-rock dam body (1), wherein a drainage ditch (2) is provided at the foot of the earth-rock dam body (1), and characterized in that: A protective plate (3) that fits the earth-rock dam body (1) is fixedly installed on the top of one end of the drainage ditch (2), a drainage filter plate (4) is fixedly installed on the top of the protective plate (3), an inner core filter plate (5) is arranged below the drainage filter plate (4), one end of the inner core filter plate (5) is provided with a plurality of linear array dredging cones (6), a fixed lock buckle (7) is fixedly connected to the middle of the inner core filter plate (5), a waterproof tension rope (8) is fixedly connected to the inside of the fixed lock buckle (7), and a limiting ball (9) is fixedly installed on one end of the waterproof tension rope (8).

2. The anti-siltation device for drainage ditch at the foot of an earth-rock dam according to claim 1, characterized in that: A drainage groove (12) is provided inside the drainage ditch (2), a rotation groove adapted to the inner core filter plate (5) is provided at the top of the drainage ditch (2), a guide chute (13) is provided on one side of the rotation groove, a scraper (14) is movably connected inside the guide chute (13), and a boss (15) is provided at one end of the scraper (14).

3. The anti-siltation device for drainage ditch at the foot of an earth-rock dam according to claim 2, characterized in that: One end of the drainage filter plate (4) away from the protective plate (3) is fixedly connected to the drainage ditch (2), and the drainage filter plate (4) is arranged at an angle, and the inclination of the drainage filter plate (4) and the earth-rock dam body (1) is the same.

4. The anti-siltation device for drainage ditches at the foot of an earth-rock dam according to claim 3, characterized in that: The drainage filter plates (4) are each provided with filter holes (10) therein, and the inner core filter plates (5) are provided with inner core holes (11) therein, wherein the filter holes (10) and the inner core holes (11) are cross-distributed.

5. The anti-siltation device for drainage ditch at the foot of an earth-rock dam according to claim 4, characterized in that: One end of the inner core filter plate (5) is rotatably connected to the inside of the drainage ditch (2), and a fixing groove adapted to the fixing lock buckle (7) is provided in the middle of the inner core filter plate (5).

6. The anti-siltation device for drainage ditch at the foot of an earth-rock dam according to claim 5, characterized in that: The position of the silt-cleaning cone (6) corresponds to the position of the filter hole (10), the size of the silt-cleaning cone (6) is smaller than the size of the filter hole (10), and the silt-cleaning cone (6) and the inner core hole (11) are cross-distributed.

7. The anti-siltation device for drainage ditch at the foot of an earth-rock dam according to claim 6, characterized in that: One end of the waterproof tension rope (8) passes through the drainage filter plate (4), and the limiting ball (9) is located on one side of the drainage filter plate (4).

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