A refuse landfill dam

Abstract

This utility model discloses a landfill slag retaining dam, which includes a dam body, an isolation wall on one side of the bottom of the dam body, multiple drainage components on the sidewalls of the dam body, and diversion components on both sides of the top of the dam body. In this landfill slag retaining dam, a fixing frame is buried at the bottom of the landfill waste. The leachate generated by the waste flows into the trough, and the gravel is fixed by wire mesh to prevent movement. The gravel is filtered by geotextile. The filtered leachate flows into the conveying pipe from the drainage port for discharge treatment, avoiding leachate pollution of the soil. The protective plate helps to prevent the wire mesh and geotextile from being damaged due to excessive weight of the waste, which would affect the filtration. Secondly, the sidewall of the intercepting channel is attached to the hillside. During rainfall, the soil on the hillside slides down into the intercepting channel with the rainwater. The diversion components facilitate the discharge of the soil to the other side of the dam body, preventing rainwater and soil from falling into the landfill and causing secondary pollution due to waste overflow.

Description

Technical Field

[0001] This utility model relates to the field of slag retaining dam technology, specifically a slag retaining dam for landfills. Background Technology

[0002] Landfills are centralized waste disposal sites using sanitary landfill methods. Waste dams are typically dams set up in valleys and gullies within landfills formed by natural mountains to block waste from being buried. At the same time, leachate generated from the waste is collected and directed to a regulating pond behind the dam for treatment, ensuring that it meets discharge standards and preventing secondary pollution to downstream areas and receiving water bodies.

[0003] The prior art patent document with publication number CN219491069U provides: a landfill dam, including a barrier wall extending vertically to the waterproof layer and an inner dam body and an outer dam body built on the ground surface and respectively leaning against the inner and outer sides of the barrier wall. The inner dam body and the outer dam body are provided with connecting parts between them and the barrier wall. The barrier wall extends to the waterproof layer and works in conjunction with the waterproof layer to prevent the leakage of landfill leachate. The inner and outer dam bodies and the connecting parts form an integral part with the barrier wall, which strengthens the barrier wall and reduces the overall manufacturing cost.

[0004] Although the device has many beneficial effects, the following problems still exist: During the use of the device, the barrier wall and the slag dam block the landfill waste, making it inconvenient to treat and discharge the leachate generated by the waste; secondly, during the use of the device, rainwater washes away the soil on the hillside and causes landfill waste to overflow and cause secondary pollution, which needs to be improved. In view of this, we propose a landfill slag dam. Utility Model Content

[0005] The purpose of this section is to outline some aspects of the embodiments of this utility model and to briefly introduce some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be used to limit the scope of this utility model.

[0006] 1. Technical problems to be solved:

[0007] To address the problems of landfill barriers and slag-retaining dams hindering the treatment and discharge of leachate and causing secondary pollution due to rainwater erosion and soil slippage, this utility model is proposed.

[0008] Therefore, the purpose of this utility model is to provide a landfill retaining dam that facilitates the centralized discharge of leachate generated by the landfill, making it easy to handle and guide rainwater and soil that has slid down the hillside to the other side of the retaining dam, thereby preventing the landfill from overflowing and causing secondary pollution.

[0009] 2. Technical Solution:

[0010] To solve the above-mentioned technical problems, according to one aspect of the present invention, the present invention provides the following technical solution:

[0011] A landfill dam includes a dam body with an isolation wall on one side of its bottom. Multiple drainage components are provided on the sidewalls of the dam body, each drainage component including a conveying pipe. A fixed frame is located at the top of one end of the conveying pipe. Through grooves are formed on the four sides and top of the fixed frame. Protective plates are provided on the sidewalls of the through grooves, and multiple flow channels are formed on the sidewalls of the protective plates. A drainage port is located at the bottom of the inner cavity of the fixed frame. A wire mesh is provided at the bottom of the inner cavity of the fixed frame. Geotextile is provided on the sidewalls of the inner cavity of the wire mesh, and multiple crushed stones are placed inside the geotextile. Drainage components are provided on both sides of the top of the dam body. The through grooves on the four sides and top of the fixed frame facilitate faster collection of leachate generated from the landfill.

[0012] As a preferred embodiment of the landfill slag retaining dam of this utility model, the diversion component includes a flood interception channel. A baffle is provided at one end of the inner wall of the flood interception channel, and a motor is provided at one end of the bottom of the inner cavity of the flood interception channel. A rotating shaft is provided at the output end of the motor, and multiple blades are provided on the outer circumference of the rotating shaft. The motor is electrically connected to an external power source. The baffle prevents soil from falling and damaging the motor.

[0013] As a preferred embodiment of the landfill slag retaining dam of this utility model, the size and position of the discharge port are matched with the size and position of the conveying pipe, and the other end of the conveying pipe is provided with a regulating pool through the side wall of the dam.

[0014] As a preferred embodiment of the landfill retaining dam of this utility model, the geotextile is a polypropylene split-film woven geotextile, and the pore size of the wire mesh is smaller than the particle size of the crushed stone.

[0015] As a preferred embodiment of the landfill slag barrier dam of this utility model, the cross-section of the intercepting channel is trapezoidal, the width of the top of the intercepting channel is greater than the width of the bottom of the intercepting channel, and one end of the intercepting channel is open.

[0016] In a preferred embodiment of this utility model of a landfill retaining dam, multiple blades are inclined, and the rotating shaft is rotatably connected to the side wall of the baffle. The rotation of the inclined blades drives the water flow, preventing water from flowing back into the motor.

[0017] As a preferred embodiment of the landfill retaining dam of this utility model, the isolation wall is made of reinforced concrete, and the width of the bottom of the dam body is greater than the width of the top of the dam body.

[0018] 3. Beneficial effects:

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This type of landfill retaining dam embeds a fixed frame into the bottom of the landfill waste. The leachate produced by the waste flows in from the trough, and the crushed stones are fixed by wire mesh to prevent movement. The crushed stones are filtered by geotextile. The filtered leachate flows into the conveying pipe from the drain outlet for treatment, avoiding leachate pollution of the soil. The protective plate helps to prevent the wire mesh and geotextile from being damaged due to excessive weight of the waste, which would affect the filtration.

[0021] This type of landfill retaining dam integrates the sidewall of the intercepting channel with the hillside. During rainfall, soil from the hillside slides down into the intercepting channel along with the rainwater. By turning on the motor to drive the rotating shaft, multiple blades rotate, causing water to flow and facilitating the discharge of soil to the other side of the dam. This prevents rainwater and soil from falling into the landfill and causing secondary pollution due to overflow of waste. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings and detailed embodiments. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0023] Figure 1 This is a schematic cross-sectional view of the overall structure of a landfill slag retaining dam according to the present invention;

[0024] Figure 2 This is a cross-sectional schematic diagram of the drainage component structure of a landfill slag retaining dam according to the present invention;

[0025] Figure 3 This is a schematic diagram of the internal cross-section of the drainage component structure of a landfill slag retaining dam according to the present invention;

[0026] Figure 4 This is a cross-sectional schematic diagram of the diversion component structure of a landfill slag retaining dam according to the present invention;

[0027] Figure 5 This is a schematic diagram of the diversion component structure of a landfill slag retaining dam according to the present invention.

[0028] The following are the labels in the diagram: 1. Dam body; 2. Isolation wall; 3. Drainage assembly; 4. Diversion assembly; 301. Conveying pipe; 302. Fixing frame; 303. Through channel; 304. Protective plate; 305. Flow channel; 306. Drainage outlet; 307. Wire mesh; 308. Geotextile; 309. Crushed stone; 401. Flood interception channel; 402. Baffle; 403. Motor; 404. Shaft; 405. Blade. Detailed Implementation

[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] This utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not be construed as limiting the scope of protection of this utility model. In actual manufacturing, the three-dimensional spatial dimensions of length, width, and depth should be included.

[0031] The orientation or positional relationship indicated in the terminology is based on the orientation or positional relationship shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0032] The term "connection method" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] The embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0034] This utility model provides an overall structural schematic diagram of an embodiment of a landfill slag retaining dam, including:

[0035] Please see Figures 1-5This embodiment of a landfill slag retaining dam includes a dam body 1. An isolation wall 2 is fixed to one side of the bottom of the dam body 1. Multiple drainage components 3 are fixed to the sidewalls of the dam body 1. Each drainage component 3 includes a conveying pipe 301. A fixed frame 302 is welded to the top of one end of the conveying pipe 301. Through grooves 303 are formed on the four sides and top of the fixed frame 302. Protective plates 304 are fixed to the sidewalls of the multiple through grooves 303. Multiple flow channels 305 are formed on the sidewalls of the multiple protective plates 304. A drainage port 306 is formed at the bottom of the inner cavity of the fixed frame 302. A wire mesh 307 is welded to the bottom of the inner cavity of the fixed frame 302. The wire mesh 307 has a drainage port on the inner side of the inner cavity. The wall is fixed with geotextile 308, and multiple crushed stones 309 are fixed inside the geotextile 308. Drainage components 4 are fixed on both sides of the top of the dam body 1. The fixing frame 302 is buried to the bottom of the landfill waste. The leachate generated by the waste flows in from the flow channel 305. The crushed stones 309 are fixed by the wire mesh 307 to prevent movement. The leachate is filtered by the geotextile 308 and the crushed stones 309. The filtered leachate flows from the drain 306 into the conveying pipe 301 for discharge and treatment, so as to avoid leachate pollution of the soil. The protective plate 304 helps to prevent the wire mesh 307 and geotextile 308 from being damaged due to excessive weight of the waste, which would affect the use of filtration.

[0036] It is worth noting that, in order to prevent rainwater and soil from falling into the landfill and causing waste overflow, the diversion component 4 specifically includes a flood interception channel 401. A baffle 402 is welded to one end of the inner wall of the flood interception channel 401, and a motor 403 is fixed to one end of the bottom of the inner cavity of the flood interception channel 401. A rotating shaft 404 is fixed to the output end of the motor 403, and multiple blades 405 are fixed to the outer circumference of the rotating shaft 404. The motor 403 is electrically connected to an external power source, so that the side wall of the flood interception channel 401 is attached to the hillside. When it rains, the soil on the hillside slides down into the flood interception channel 401 along with the rainwater. By turning on the motor 403, the rotating shaft 404 is driven to rotate, thereby causing the multiple blades 405 to rotate and drive the water flow, which facilitates the discharge of soil to the other side of the dam body 1, thus preventing rainwater and soil from falling into the landfill and causing waste overflow and secondary pollution.

[0037] Next, in order to facilitate the treatment of leachate, the size and position of the discharge outlet 306 are matched with the size and position of the conveying pipe 301. The other end of the conveying pipe 301 passes through the side wall of the dam body 1 and is fixedly installed in an equalization pool. The equalization pool facilitates the treatment of wastewater and avoids environmental pollution.

[0038] Meanwhile, to prevent the gravel 309 from scattering, specifically, the geotextile 308 is a polypropylene split-film woven geotextile, and the wire mesh 307 has a pore size smaller than the particle size of the gravel 309. The polypropylene split-film woven geotextile 308 improves water permeability, and the wire mesh 307 with a pore size smaller than the gravel 309 prevents the gravel 309 from scattering after the geotextile 308 is accidentally broken.

[0039] Furthermore, to facilitate the collection of rainwater and soil, the intercepting channel 401 has a trapezoidal cross-section. The width of the top of the intercepting channel 401 is greater than the width of the bottom of the intercepting channel 401. One end of the intercepting channel 401 is open. The trapezoidal cross-section of the intercepting channel 401 facilitates the collection of rainwater and soil flowing down the hillside into the intercepting channel 401, which is then discharged through the open end.

[0040] It is worth noting that, in order to prevent water from flowing back into the motor 403, specifically, multiple blades 405 are inclined, and the shaft 404 is rotatably connected to the side wall of the baffle 402. Through the inclined blades 306, it is easy to drive the water flow to one end of the flood interception channel 401.

[0041] Finally, in order to improve structural strength, specifically, the material of the isolation wall 2 is reinforced concrete, and the width of the bottom of the dam body 1 is greater than the width of the top of the dam body 1. The reinforced concrete isolation wall 2 improves structural strength and facilitates use, and the fact that the bottom width of the dam body 1 is greater than the top width facilitates the improvement of the structural stability of the dam body 1.

[0042] In addition, the circuits, electronic components, and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon. Furthermore, the scope of protection of this utility model does not involve improvements to the internal structure and methods.

[0043] The device or equipment models mentioned in this article may be as follows:

[0044] Motor 403: Y90S-2.

[0045] Combination Figures 1-5 The specific usage process of a landfill slag retaining dam according to this embodiment is as follows:

[0046] 1: When this device is needed to be used as a landfill slag retaining dam, the fixing frame 302 is buried into the bottom of the landfill waste, and the crushed stone blocks 309 wrapped with geotextile 308 are fixed with wire mesh 307. The leachate generated by the waste flows into the crushed stone blocks 309 from the flow channel 305 for filtration. The filtered leachate flows into the conveying pipe 301 from the drain outlet 306 for discharge and treatment.

[0047] 2: The sidewall of the flood interception channel 401 is attached to the hillside. When it rains, the soil on the hillside slides down into the flood interception channel 401 along with the rainwater. The motor 403 is started to make the shaft 404 rotate, which drives multiple blades 405 to rotate and drive the water flow, thereby discharging the soil to the other side of the dam body 1.

[0048] Although the present invention has been described above with reference to embodiments, various modifications can be made and components can be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the features in the embodiments disclosed in this invention can be combined with each other in any way. The lack of an exhaustive description of these combinations in this specification is merely for the sake of brevity and resource conservation. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A landfill slag retaining dam, characterized in that, The dam includes a dam body (1), with an isolation wall (2) on one side of the bottom of the dam body (1). Multiple drainage components (3) are provided on the sidewalls of the dam body (1). Each drainage component (3) includes a conveying pipe (301). A fixed frame (302) is provided at the top of one end of the conveying pipe (301). Through slots (303) are provided on the four sides and top of the fixed frame (302). Protective plates (304) are provided on the sidewalls of each of the through slots (303). Each of the protective plates (304) has multiple flow channels (305) on its sidewalls. The bottom of the inner cavity of the fixed frame (302) has a drain port (306). The bottom of the inner cavity of the fixed frame (302) has a wire mesh (307). The inner sidewall of the wire mesh (307) has a geotextile (308). The geotextile (308) has multiple crushed stones (309) inside. The top of the dam body (1) has diversion components (4) on both sides.

2. The landfill slag retaining dam according to claim 1, characterized in that, The diversion assembly (4) includes a flood interception channel (401), a baffle (402) is provided at one end of the inner wall of the flood interception channel (401), a motor (403) is provided at one end of the bottom of the inner cavity of the flood interception channel (401), a rotating shaft (404) is provided at the output end of the motor (403), a plurality of blades (405) are provided on the outer circumference of the rotating shaft (404), and the motor (403) is electrically connected to an external power source.

3. The landfill slag retaining dam according to claim 2, characterized in that, The size and position of the drain outlet (306) match the size and position of the conveying pipe (301), and the other end of the conveying pipe (301) passes through the side wall of the dam body (1) to set up an regulating pool.

4. The landfill slag retaining dam according to claim 3, characterized in that, The geotextile (308) is a woven geotextile made of polypropylene split film yarn, and the pore size of the wire mesh (307) is smaller than the particle size of the crushed stone (309).

5. The landfill slag retaining dam according to claim 4, characterized in that, The cross-section of the flood interception channel (401) is trapezoidal, the width of the top of the flood interception channel (401) is greater than the width of the bottom of the flood interception channel (401), and one end of the flood interception channel (401) is open.

6. The landfill slag retaining dam according to claim 5, characterized in that, The multiple blades (405) are all inclined, and the rotating shaft (404) is rotatably connected to the side wall of the baffle (402).

7. The landfill slag retaining dam according to claim 6, characterized in that, The isolation wall (2) is made of reinforced concrete, and the width of the bottom of the dam (1) is greater than the width of the top of the dam (1).

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