landfill dam

Abstract

The invention discloses a refuse landfill dam, the refuse landfill has a water-resisting layer under the ground, characterized in that the dam comprises a barrier wall extending vertically to the water-resisting layer, and an inner dam body and an outer dam body built on the ground and respectively leaning against the inner and outer sides of the barrier wall, and a connecting piece is arranged between the inner dam body, the outer dam body and the barrier wall. The barrier wall extends to the water-resisting layer and cooperates with the water-resisting layer to block the leakage of the landfill leachate, the inner and outer dam bodies and the connecting piece form an integral whole with the barrier wall, which reinforces the barrier wall and reduces the overall manufacturing cost.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of landfill pollution risk control, and particularly relates to a garbage landfill dam with an anti-seepage function. BACKGROUND

[0002] With the continuous development of urban construction, the contradiction between garbage treatment and environmental protection requirements is increasingly obvious. Garbage landfill is a main disposal method, and a blocking wall for blocking garbage is built around the garbage landfill to limit garbage pollution around the garbage landfill. However, the existing blocking wall only has a mechanical support function. After rain or liquid in the soil infiltrates the garbage, garbage leachate containing toxic and harmful pollutants is infiltrated to the groundwater layer, and the groundwater overcomes the wall to pollute other areas. SUMMARY

[0003] The application provides a garbage landfill dam, which can effectively prevent garbage leachate from seeping.

[0004] The garbage landfill dam provided by the application is characterized in that the garbage landfill has a water-resisting layer at the bottom of the ground, the dam includes a blocking wall extending vertically to the water-resisting 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 blocking wall, and a connecting piece is arranged between the inner dam body, the outer dam body and the blocking wall.

[0005] The following optional modes are also provided, but are not additional limitations on the above general scheme, but are only further supplements or preferences. Without technical or logical contradictions, each optional mode can be combined with the above general scheme, and the optional modes can also be combined with each other.

[0006] Optionally, the inner dam body has a counterweight portion protruding inward.

[0007] Optionally, the protruding width of the counterweight portion gradually decreases as the height of the counterweight portion decreases.

[0008] Optionally, the outer dam body has a base portion protruding outward near the ground surface.

[0009] Optionally, the blocking wall includes a metal framework and a pouring body.

[0010] Optionally, the connecting piece is a tie bar embedded in the pouring body, and both ends of the tie bar extend into the outer dam body and the inner dam body.

[0011] Optionally, the part of the tie bar extending into the outer dam body and the inner dam body is provided with a radial expansion anti-disengagement piece.

[0012] Optionally, the metal framework is composed of a longitudinal and transverse steel cage.

[0013] Optionally, the pouring body is embedded in the inner dam body and the outer dam body at every certain height.

[0014] The refuse landfill dam of the present application, the barrier wall extends to the water-resisting layer, and cooperates with the water-resisting layer to block the leakage of the landfill leachate, the inner dam body, the outer dam body and the connecting piece form an integral whole with the barrier wall, which reinforces the barrier wall and reduces the overall manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Fig. 1 is a structural schematic diagram of a refuse landfill dam according to an embodiment of the present application;

[0016] Figure 2 Fig. 2 is a sectional view of a refuse landfill dam according to an embodiment of the present application;

[0017] Figure 3 Fig. 3 is a sectional view of a refuse landfill dam according to an embodiment of the present application; Figure 2 Fig. 4 is a partial enlarged view of one side of the connecting piece of the refuse landfill dam according to an embodiment of the present application;

[0018] Figure 4 Fig. 5 is a distribution diagram of the metal framework of the refuse landfill dam according to an embodiment of the present application;

[0019] Figure 5 Fig. 6 is a partial sectional view of the refuse landfill dam according to an embodiment of the present application.

[0020] Reference signs in the drawings are explained as follows:

[0021] 1, refuse landfill; 11, water-resisting layer;

[0022] 2, refuse dam; 21, barrier wall; 211, metal framework; 213, pouring body; 23, inner dam body; 231, counterweight part; 25, outer dam body; 251, base part; 27, connecting piece; 271, anti-disengagement piece;

[0023] 3, ground surface; 4, online monitoring equipment. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0025] It should be noted that when a component is referred to as being “connected with” another component, it can be directly connected with the other component or there can be a middle component. When a component is referred to as being “disposed on” another component, it can be directly disposed on the other component or there can be a middle component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0027] In this application, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance or an implied indication of the number, order of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0028] Please refer to Figure 1 , Figure 2 The waste landfill dam of the present application has a water barrier layer 11 in the ground, and the dam 2 includes a barrier wall 21 extending vertically to the water barrier layer 11, and an inner dam body 23 and an outer dam body 25 built on the ground surface 3 and respectively leaning against the inner and outer sides of the barrier wall 21, and a connecting piece 27 is arranged between the inner dam body 23, the outer dam body 25 and the barrier wall 21.

[0029] Among them, the inner side and the outer side are divided by the barrier wall 21, and the waste landfill is located on one side as the inner side, and the opposite side is the outer side. The arrangement of the barrier wall 21 can be at least: the barrier wall 21 is arranged around the waste landfill 1; or the barrier wall 21 is arranged on the side where the underground water flows.

[0030] The water barrier layer 11 is below the underground water layer, which can ensure that the underground water cannot infiltrate. The barrier wall 21 is embedded in the ground and extends to the water barrier layer 11, and itself has the ability to block the leakage of landfill leachate, which can cooperate with the water barrier layer 11 to block the landfill leachate. Considering the difficulty of construction and high manufacturing cost of the barrier wall 21, the inner and outer dam bodies are clamped against the barrier wall 21 on the ground surface to improve the structural strength of the barrier wall. The connecting piece 27 connects the inner and outer dam bodies and the barrier wall 21 into one body, and the three are pulled by each other to improve the overall structural strength. And the barrier wall 21 is between the inner and outer dam bodies, reducing the influence of the natural environment (such as rain erosion, wind erosion, etc.) on the barrier wall 21, prolonging the service life.

[0031] In the preferred embodiment, the barrier wall 21 penetrates the water barrier layer 11 by two meters to improve the impermeability.

[0032] As Figure 1As shown, in an embodiment, the inner dam body 23 has a counterweight portion 231 protruding inward. The counterweight portion 231 is used to counteract the force acting on the dam after the garbage is piled up, and to improve the mechanical support of the dam. Preferably, the protruding width of the counterweight portion 231 gradually decreases as the height of the counterweight portion 231 decreases. That is, a receiving space is formed at the bottom of the counterweight portion 231, which can also be used to intercept falling garbage.

[0033] In an embodiment, the outer dam body 25 has a base portion 251 protruding outward near the ground surface. In the illustration, the base portion 251 is at the bottom and abuts against the ground surface, providing support force and lowering the center of gravity of the dam, thereby improving the structural stability.

[0034] Regarding the construction process of the barrier wall 21: the barrier wall 21 includes a metal framework 211 and a cast body. Specifically, the metal framework 211 is composed of a plurality of steel cages arranged in a crisscross manner, and the cast body can be a concrete structure. Figure 4 As shown, the metal framework 211 can be composed of steel cages arranged in a crisscross manner, and the cast body can be a concrete structure.

[0035] As shown in Figure 2 , Figure 3 The connecting member 27 is a tie bar embedded in the cast body 213, the extension direction of the tie bar is along the thickness direction of the dam, and the two ends of the tie bar respectively extend into the outer dam body 25 and the inner dam body 23. This improves the tensile strength of the dam. Preferably, the part of the tie bar extending into the outer dam body 25 and the inner dam body 23 is provided with a radially enlarged anti-disengagement member 271, and the anti-disengagement member 271 is embedded in the corresponding dam body to further improve the integral shape of the inner dam body, the outer dam body, and the barrier wall 21. The anti-disengagement member 271 can be an anchor bolt fixed on the tie bar, and the fixing mode of the anchor bolt can be threaded connection or welding.

[0036] The inner and outer dam bodies are generally composed of natural stone and cement mortar, as shown in Figure 5 In an embodiment, the cast body 213 is embedded in the inner dam body 23 and the outer dam body 25 at certain intervals. Specifically, after the inner and outer dam bodies are stacked to a certain height, for example, two meters, the barrier wall 21 partially protrudes and is on the cast body 213 on the inner and outer dam bodies, and then the cast body 213 is continued to be stacked to two meters above, and so on, thereby improving the structural strength of the inner and outer dam bodies.

[0037] Referring back to Figure 1 In an embodiment, the barrier wall 21 is provided with a bored pile near one side of the landfill 1, and an online monitoring device 4 is arranged inside. Once the landfill leachate leaks from the inner side of the dam, it will be identified by the online monitoring device and an alarm will be sent, which facilitates the identification of the leakage point and the taking of remedial measures.

[0038] The refuse landfill dam of the application reduces manufacturing cost, maintains or even improves structural strength after optimization of the structure. The inner and outer dam bodies wrap the barrier wall, reducing the influence of the natural environment on the barrier wall and prolonging the service life of the dam body. Online monitoring equipment is also provided to monitor the state of the barrier wall.

[0039] The technical features of the above embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above embodiments are not described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure. When technical features in different embodiments are embodied in the same figure, it can be considered that the figure also discloses the combination of the embodiments involved.

[0040] The above embodiments only express several implementation manners of the application, and the description is specific and detailed, but it should not be understood as a limitation on the patent application scope. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the application, and these are within the protection scope of the application.

Claims

1. A landfill dam with seepage prevention function, wherein the landfill has a waterproof layer located underground, characterized in that, The debris-blocking dam includes a barrier wall extending vertically to the water-resistant layer, and an inner dam body and an outer dam body built on the ground surface and respectively resting against the inner and outer sides of the barrier wall. The inner dam body and the outer dam body are connected to the barrier wall. The outer dam body has a base that protrudes outward close to the ground surface, and the inner dam body has a counterweight that protrudes inward. The protrusion width of the counterweight gradually decreases as its height decreases, so that a containment space for intercepting and blocking debris is formed at the bottom of the counterweight.

2. The landfill slag retaining dam according to claim 1, characterized in that, The barrier wall comprises a metal frame and a cast-in-place structure.

3. The landfill slag retaining dam according to claim 2, characterized in that, The connector is a tie rod embedded in the cast-in-place structure, with both ends of the tie rod extending into the outer dam body and the inner dam body.

4. The landfill slag retaining dam according to claim 3, characterized in that, The portions of the tie rods that extend into the outer and inner dam bodies are equipped with radially enlarged anti-detachment components.

5. The landfill slag retaining dam according to claim 2, characterized in that, The metal frame is composed of a crisscrossing steel cage.

6. The landfill slag retaining dam according to claim 2, characterized in that, The cast-in-place material is embedded into the inner dam body and the outer dam body at regular intervals.

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