Ecological dredging mud storage pool causeway retaining wall structure for rivers, lakes and reservoirs

Abstract

The utility model relates to a river, lake and reservoir ecological desilting mud storage pool causeway retaining wall structure which comprises a retaining wall structure located above a causeway, an overflow structure and an active drainage structure, the retaining wall structure comprises a vertical baffle and a top baffle, and a drainage hole communicated with the overflow structure is formed in the upper portion of the vertical baffle. The active drainage structure comprises a water pumping pipe and a water pumping pipeline, and the water pumping pipe is installed on the top baffle. The retaining wall structure is additionally arranged above the causeway, can be combined, is suitable for ultra-long causeways and mud storage tanks in various shapes, can effectively improve the height of the causeway, increases the mud storage volume of the mud storage tanks, and greatly reduces the construction cost compared with an earth and rockfill dam causeway by widening and heightening; meanwhile, an active drainage structure is arranged, so that supernate in the sludge storage tank can be quantitatively and conveniently discharged, and regular and quantitative tail water treatment is beneficial to the tail water treatment effect; in addition, due to the design of an overflow structure, supernate exceeding the liquid level elevation can be automatically discharged, and environmental pollution caused by overflow of tail water is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of ecological dredging, in particular to a retaining wall structure of an embankment for an ecological dredging mud storage pool for rivers, lakes and reservoirs. Background Art

[0002] In the ecological restoration project of rivers, lakes and reservoirs, ecological dredging of polluted sludge is an important step. The polluted sludge in the water body is dredged out, dehydrated and solidified through a dehydration process to form nutrient soil that can be utilized as a resource, and then transported to the sludge storage site for storage.

[0003] The polluted sludge in rivers, lakes and reservoirs is moved out of the water from the bottom of the water body through ecological dredging operations, and then transported to the sludge storage pool in the dewatering area through sludge pipelines. To ensure that the dredged sludge can move smoothly in the specified direction in the conveying pipeline, water is generally added during the transportation process to improve the fluidity of the mud and prevent blockage of the sludge discharge pipeline. In this way, the water content of the dredged sludge introduced into the dewatering site increases, the amount of water removed increases, and the dewatering cost is increased.

[0004] In the prior art, a mud storage pool is generally set up in the dewatering field, and a dike is built around the mud storage pool to increase the capacity of the mud storage pool and discharge a certain amount of water before dehydration and solidification. After the mud is transported to the mud storage pool, after a period of sedimentation, the mud settles at the bottom of the dewatering pool, and a supernatant is precipitated on the top. The supernatant is discharged from the site in a timely manner, which can reduce the water content and shorten the dehydration time.

[0005] However, there are certain problems in practical application. Conventional technology is to set the elevation of the top surface of the dike, and the supernatant is discharged from the dewatering area by overflowing the top surface of the dike. This method has common problems: the construction cost of the dike is high. If the amount of mud storage is increased, the dike construction height needs to be increased. The construction cost of the dike itself is relatively high. Every time a certain height is increased, the cost increases exponentially. At the same time, the heightened dike increases its own weight, which puts higher requirements on the bearing capacity of the foundation. If the foundation needs to be reinforced, the cost is even higher. In addition, the traditional method of using the overflow from the top of the dike is difficult to control the drainage volume and the direction of water flow. After the supernatant overflows, it causes secondary pollution to the environment, because the tail water contains a large amount of substances that are harmful to the environment, which will cause pollution to the environment. After the supernatant is discharged from the dewatering area, it needs to be treated by water to form tail water that meets the standard requirements before being discharged. In summary, it is of great practical significance to provide a low-cost dredging and filling mud storage tank dike retaining wall structure with supernatant discharge function. Utility Model Content

[0006] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide a dam retaining wall structure for an ecological silt storage pool for desilting of rivers, lakes and reservoirs.

[0007] The utility model is realized through the following technical solutions:

[0008] A retaining wall structure for an ecological silt storage pool for desilting of rivers, lakes and reservoirs comprises a retaining wall structure, an overflow structure and an active drainage structure located above the embankment. The retaining wall structure comprises a vertical baffle fixedly connected to the top of the embankment and a top baffle arranged above the vertical baffle. A drainage hole connected to the overflow structure is provided on the upper portion of the vertical baffle. The active drainage structure comprises a pumping pipe and a pumping pipeline connected to the pumping pipe. The pumping pipe is installed on the top baffle.

[0009] According to the above technical solution, preferably, a mounting hoop is provided on the surface of the top baffle, and the water pumping pipe passes through the mounting hoop and is fixedly connected thereto.

[0010] According to the above technical solution, preferably, the pumping pipeline includes a drainage hose connected to the pumping pipe, a drainage main pipe connected to the drainage hose, and a drainage pump connected to the drainage main pipe. The drainage pump is connected to the drainage pipe outlet and discharges into the tailwater treatment tank.

[0011] According to the above technical solution, preferably, the active drainage structure also includes a pumping head located at one end of the pumping pipe, and the pumping head is a mesh structure, so that debris in the supernatant is difficult to enter the pipeline, thereby preventing pipeline blockage.

[0012] According to the above technical solution, preferably, the overflow structure includes an overflow guide groove connected to the upper part of the vertical baffle and an external discharge guide groove located below the tail end of the overflow guide groove. The overflow guide groove is inclined, and the end of the overflow guide groove is connected to the drainage hole. The external discharge guide groove discharges the collected supernatant into the tailwater treatment tank.

[0013] According to the above technical solution, preferably, a reinforcement structure is provided between the retaining wall structure and the dike to stabilize the overall structure and enhance the lateral compressive resistance of the dike, so that when the blown fill slurry has a high lateral pressure, the retaining wall structure will not be overturned.

[0014] According to the above technical solution, preferably, the reinforcement structure includes a stiffening plate fixedly connected to the back of the vertical baffle and a support rod fixedly connected to the stiffening plate and above the dike.

[0015] According to the above technical solution, preferably, the drainage pump is connected to the drainage pipe outlet, and the drainage pipe outlet and the tail end of the external drainage diversion trough are connected to the tailwater treatment tank.

[0016] The beneficial effects of the utility model are:

[0017] The utility model can be installed on the top of the dike through the retaining wall structure, which can be combined and is suitable for extra-long dikes and mud storage tanks of various shapes. It can also effectively increase the height of the dike and the mud storage volume of the mud storage tank. Compared with the earth-rock dam dike, the construction cost of widening and raising the dike is greatly reduced; at the same time, the setting of the active drainage structure can quantitatively discharge the supernatant of the mud storage tank, and the regular and quantitative tail water treatment is beneficial to the tail water treatment effect; in addition, the overflow structure is designed to automatically discharge the supernatant that exceeds the liquid level elevation, so as to prevent the tail water from overflowing and causing environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional structure diagram of the retaining wall structure of the utility model. Figure 1 .

[0019] Figure 2 This is a three-dimensional structure diagram of the retaining wall structure of the utility model. Figure 2 .

[0020] Figure 3 This is a three-dimensional structure diagram of the utility model. Figure 1 .

[0021] Figure 4 This is a three-dimensional structure diagram of the utility model. Figure 2 .

[0022] Figure 5 This is a three-dimensional structure diagram of the utility model. Figure 3 .

[0023] In the figure: 10, dike; 21, top baffle; 22, vertical baffle; 221, bottom plate; 23, stiffened plate; 25, support rod; 26, drainage hole; 27, overflow diversion trough; 28, soil nail; 29, fixing screw; 30, pumping head; 31, pumping pipe; 32, drainage hose; 33, drainage main pipe; 35, mounting hoop; 36, fastening screw; 38, drainage pump; 39, drainage pipe outlet; 61, external drainage diversion trough; 62, diversion trough bracket. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and the best embodiment. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the utility model.

[0025] In the description of the utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the utility model.

[0026] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installation", "setting", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] As shown in the figure, the utility model includes a retaining wall structure, an overflow structure and an active drainage structure located above the dike 10. The retaining wall structure includes a vertical baffle 22 fixedly connected to the top of the dike 10 and a top baffle 21 arranged above the vertical baffle 22. The upper part of the vertical baffle 22 is provided with a drainage hole 26 connected to the overflow structure. The vertical baffle 22 is made of metal and can be raised according to the filling height. The purpose of this arrangement is to provide different heights of the dike 10. The top baffle 21 is arranged on the upper part of the vertical baffle 22 by welding. The top baffle 21 is arranged obliquely upward. The purpose of this arrangement is to raise the dike 10 and prevent the supernatant from splashing. The bottom of the vertical baffle 22 is provided with a bottom plate 221 by welding to stabilize the overall structure. In addition, a reinforcement structure is arranged between the retaining wall structure and the dike 10 to stabilize the overall structure and improve the lateral compressive resistance of the dike 10. When the filling slurry has a high lateral pressure, the retaining wall structure will not be overturned. Specifically, the reinforcement structure includes a reinforced plate 23 fixedly connected to the back of the vertical baffle 22 and a support rod 25 fixedly connected to the reinforced plate 23 and the top of the dike 10. The purpose of setting the reinforced plate 23 is to stabilize the vertical baffle 22 and to connect the support rod 25. The support rod 25 is made of metal and has circular through holes at both ends. The circular through hole on one side of the support rod 25 is connected to the reinforced plate 23, and the circular through hole on the other side is connected to the top surface of the dike 10 by driving soil nails 28. The purpose of such a facility is to make the entire retaining wall structure stable so that it will not tilt to one side under the lateral pressure of dredged fill soil and supernatant.

[0028] The active drainage structure includes a pumping pipe 31 and a pumping pipeline connected to the pumping pipe 31, and the pumping pipe 31 is installed on the top baffle 21. A mounting hoop 35 is provided on the surface of the top baffle 21, and the pumping pipe 31 passes through the mounting hoop 35 and is fixedly connected thereto. Specifically, there is a circular through hole in the middle of the mounting hoop 35 for installing the pumping pipe 31, and the pumping height can also be adjusted by moving the pumping pipe 31 up and down. A fastening screw 36 is also provided on the mounting hoop 35 for fastening the pumping pipe 31 inserted into the mounting hoop 35, so that the height will not change under the action of gravity and vibration. Among them, the pumping pipeline includes a drainage hose 32 connected to the pumping pipe 31, a drainage main pipe 33 connected to the drainage hose 32, and a drainage pump 38 connected to the drainage main pipe 33. The drainage pump 38 is connected to the drainage pipe port 39 and discharged into the tailwater treatment tank. At the same time, the active drainage structure also includes a pumping head 30 located at one end of the pumping pipe 31. The pumping head 30 is a metal mesh structure, which makes it difficult for debris in the supernatant to enter the pipeline, thereby preventing the pipeline from being blocked.

[0029] The overflow structure includes an overflow guide groove 27 connected to the upper part of the vertical baffle 22 and an external drainage guide groove 61 located below the tail end of the overflow guide groove 27. In this example, two drainage holes 26 are arranged on the upper part of each vertical baffle 22. The drainage holes 26 are semicircular through holes for discharging supernatant. The end of the overflow guide groove 27 is connected to the drainage hole 26. The overflow guide groove 27 is arranged obliquely. The cross section of the overflow guide groove 27 is preferably elliptical, which is used to discharge the supernatant into the external drainage guide groove 61. A guide groove bracket 62 is arranged at the bottom of the external drainage guide groove 61 to support the external drainage guide groove 61 so that the external drainage guide groove 61 can discharge the collected supernatant into the tailwater treatment tank.

[0030] The preferred installation method of the utility model is as follows:

[0031] Installation of dike: The retaining wall structure of the mud storage tank dike 10 disclosed in the utility model is set on the top plane of the mud storage tank, and the bottom plate 221 is in contact with the top surface of the dike 10. One side of the support rod 25 is connected to the reinforcing plate 23 through the fixing screw 29, and the other side is connected to the top surface of the dike 10 through the soil nail 28. The soil nail 28 is nailed into the top of the dike 10 through the installation hole to provide support for the structure. The purpose of this arrangement is to prevent the blown fill mud from fluctuating under hydraulic and wind conditions and overflowing. The vertical baffle 22 can be longitudinally raised and transversely widened according to the layout of the dike 10.

[0032] Pipeline installation: The pumping head 30 is connected to the pumping pipe 31, and the pumping pipe 31 passes through the installation hoop 35. The height of the pumping pipe 31 is adjusted so that the pumping head 30 is at a suitable elevation in the mud storage tank, and the fastening screws 36 are tightened to fix the height of the pumping pipe 31. The other end of the pumping pipe 31 is connected to the drainage hose 32, the drainage hose 32 is connected to the drainage main pipe 33, the drainage main pipe 33 is connected to the drainage pump 38, the drainage pump 38 is connected to the drainage pipe port 39, and the drainage pipe port 39 is discharged into the tailwater treatment tank. In addition, a guide trough bracket 62 is set above the dike 10, and the guide trough bracket 62 supports the external drainage guide trough 61, so that the external drainage guide trough 61 is exactly located at the bottom of the lowest point of the overflow guide trough 27, which is used to collect the supernatant tail water discharged by the overflow guide trough 27.

[0033] The preferred working process of the utility model is as follows:

[0034] Self-overflow drainage: In ecological dredging projects, the dredged sludge is transported to the sludge storage tank by hydraulic transportation. The surface supernatant gradually rises. When it reaches the height of the drainage hole 26, the supernatant flows out through the drainage hole 26 to the overflow diversion trough 27. The overflow diversion trough 27 can discharge the overflowed supernatant to the external drainage diversion trough 61, and the external drainage diversion trough 61 diverts it to the tailwater treatment tank.

[0035] Active drainage: When a large amount of supernatant is precipitated in the sludge storage tank, turn on the drainage pump 38 to start pumping water. The remaining supernatant water in the sludge storage tank enters the pumping pipe 31 through the pumping head 30, is transported to the drainage pump 38 through the drainage hose 32, and is discharged from the drainage pipe port 39 into the tailwater treatment tank.

[0036] The utility model can be installed on the top of the dike through the retaining wall structure, which can be combined and is suitable for extra-long dikes and mud storage tanks of various shapes. It can also effectively increase the height of the dike and the mud storage volume of the mud storage tank. Compared with the earth-rock dam dike, the construction cost of widening and raising the dike is greatly reduced; at the same time, the setting of the active drainage structure can quantitatively discharge the supernatant of the mud storage tank, and the regular and quantitative tail water treatment is beneficial to the tail water treatment effect; in addition, the overflow structure is designed to automatically discharge the supernatant that exceeds the liquid level elevation, so as to prevent the tail water from overflowing and causing environmental pollution.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A river, lake and reservoir ecological dredging mud storage pool embankment retaining wall structure, characterized in that: The invention comprises a retaining wall structure, an overflow structure and an active drainage structure located above the dike (10); the retaining wall structure comprises a vertical baffle (22) fixedly connected to the top of the dike (10) and a top baffle (21) arranged above the vertical baffle (22); a drainage hole (26) connected to the overflow structure is provided on the top of the vertical baffle (22); the active drainage structure comprises a pumping pipe (31) and a pumping pipeline connected to the pumping pipe (31); the pumping pipe (31) is installed on the top baffle (21).

2. According to claim 1, a river, lake and reservoir ecological desilting mud storage pool embankment retaining wall structure is characterized in that: A mounting hoop (35) is provided on the surface of the top baffle (21), and the water pumping pipe (31) passes through the mounting hoop (35) and is fixedly connected thereto.

3. According to claim 1, a river, lake and reservoir ecological desilting mud storage pool embankment retaining wall structure is characterized in that: The water pumping pipeline comprises a drainage hose (32) connected to the water pumping pipe (31), a drainage main pipe (33) connected to the drainage hose (32), and a drainage pump (38) connected to the drainage main pipe (33).

4. The embankment retaining wall structure of the river, lake and reservoir ecological desilting mud storage pool according to any one of claims 1 to 3, characterized in that: The active drainage structure further comprises a water pumping head (30) located at one end of the water pumping pipe (31), and the water pumping head (30) is a mesh structure.

5. According to claim 3, a river, lake and reservoir ecological desilting mud storage pool embankment retaining wall structure is characterized in that: The overflow structure comprises an overflow guide groove (27) connected to the upper part of the vertical baffle (22) and an external drainage guide groove (61) located below the tail end of the overflow guide groove (27); the overflow guide groove (27) is arranged obliquely, and the end of the overflow guide groove (27) is connected to the drainage hole (26).

6. The embankment retaining wall structure of the river, lake and reservoir ecological desilting mud storage pool according to any one of claims 1 to 3 and 5, characterized in that: A reinforcement structure is provided between the retaining wall structure and the dike (10).

7. The embankment retaining wall structure for ecological dredging and storage of mud in rivers, lakes and reservoirs according to claim 6 is characterized in that: The reinforcement structure comprises a reinforcing plate (23) fixedly connected to the back of the vertical baffle (22) and a supporting rod (25) fixedly connected to the reinforcing plate (23) and above the embankment (10).

8. The embankment retaining wall structure for ecological dredging and storage of mud in rivers, lakes and reservoirs according to claim 5, characterized in that: The drainage pump (38) is connected to a drainage pipe port (39), and the drainage pipe port (39) and the tail end of the external drainage diversion trough (61) are in communication with a tailwater treatment pool.

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