Solid waste flexible landfill reinforcing mechanism

Abstract

The utility model relates to flexible landfill reinforcement technical field, concretely relates to a kind of solid waste flexible landfill reinforcement mechanism, including side weir, composite reinforcement mechanism is provided in the inside of side weir, composite reinforcement mechanism includes the carbon fiber geogrid of several groups being laid in the inside of side weir, the top of carbon fiber geogrid is fixedly connected with flexible layer, flexible layer is composed of rubber particle and bentonite, basalt fiber is mixed in the inside of flexible layer, the top of flexible layer is fixedly connected with steel fiber concrete layer, the surface of steel fiber concrete layer is provided with four groups of installation slot. The utility model cooperates through side weir and composite reinforcement mechanism, provides high-strength tensile property through carbon fiber geogrid, effectively resists tensile deformation caused by uneven settlement of landfill, utilizes flexible layer to be made of rubber particle-bentonite-basalt fiber composite, and has elastic deformation capacity and impermeability.

Description

Technical Field

[0001] This utility model relates to the field of flexible landfill reinforcement technology, specifically to a solid waste flexible landfill reinforcement mechanism. Background Technology

[0002] Traditional flexible landfill closure structures for solid waste typically employ a simple covering method consisting of a single layer of high-density polyethylene (HDPE) membrane combined with compacted clay. While this meets the basic seepage prevention requirements, it is prone to cracking and slippage during long-term service due to uneven settlement, temperature stress, or mechanical loads, leading to closure system failure. Especially with the expansion of landfill sizes and stricter environmental standards, existing structures are insufficient in terms of deformation resistance, interface stability, and environmental adaptability. For example, HDPE membranes are prone to aging and cracking under ultraviolet radiation, while the compacted clay layer may soften under leachate erosion, further exacerbating the overall damage to the closure layer. Furthermore, traditional designs lack adaptability to dynamic loads and struggle to cope with complex conditions such as rainfall erosion and waste degradation and settlement. Therefore, a new reinforcement solution that balances mechanical performance with long-term stability is urgently needed.

[0003] To address the aforementioned issues, multi-layer composite reinforcement structures have become a research hotspot in recent years, enhancing overall performance through material gradient design and interlayer synergy. However, existing composite structures still suffer from drawbacks such as insufficient interlayer bonding and limited functionality. For instance, the mechanical anchoring of ordinary geogrids and geomembranes is prone to detachment due to stress concentration, and a single buffer layer cannot simultaneously meet the requirements for compressive strength and deformation coordination. Furthermore, the long-term durability of traditional composite materials is limited, thus reducing their practicality.

[0004] Therefore, it is necessary to invent a solid waste flexible landfill reinforcement mechanism to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a reinforcement mechanism for a flexible solid waste landfill. By combining a side retaining dam with a composite reinforcement mechanism, the practicality is improved, thereby solving the problem that a single buffer layer in the prior art cannot simultaneously meet the requirements for compressive strength and deformation coordination.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solid waste flexible landfill reinforcement mechanism, comprising a side retaining dam, wherein a composite reinforcement mechanism is provided inside the side retaining dam, the composite reinforcement mechanism comprising several sets of carbon fiber geogrids laid inside the side retaining dam, a flexible layer fixedly connected to the top of the carbon fiber geogrids, the flexible layer being composed of rubber particles and bentonite, basalt fibers mixed inside the flexible layer, a steel fiber reinforced concrete layer fixedly connected to the top of the flexible layer, four sets of installation grooves being formed on the surface of the steel fiber reinforced concrete layer, diamond-shaped reinforcing ribs fixedly connected to the bottom wall of the installation grooves, a concrete filling plate being provided inside the installation grooves, and a polyurethane wear-resistant coating being sprayed onto the surfaces of the steel fiber reinforced concrete layer and the concrete filling plate. The composite structure formed by the carbon fiber geogrids, the flexible layer, and the steel fiber reinforced concrete layer achieves both compressive strength and crack resistance.

[0007] Preferably, the outer wall of the concrete filler plate is fixedly connected with a rubber edge, and the bottom end of the concrete filler plate is provided with a snap-fit ​​groove. The snap-fit ​​groove is consistent with the shape of the diamond-shaped reinforcing rib. The concrete filler plate is installed by cooperating with the snap-fit ​​groove and the connection is reinforced by the rubber edge.

[0008] Preferably, the interior of the carbon fiber geogrid is filled with lightweight ceramsite concrete, and a geotextile is welded to the bottom end of the carbon fiber geogrid, which is then used to cover the surface of the waste.

[0009] Preferably, the inner wall of the side retaining dam is fixedly connected with a lateral reinforcement zone, and the interior of the side retaining dam is provided with two sets of filling zones, which provide a foundation for the laying of the composite reinforcement mechanism through the lateral reinforcement zone.

[0010] Preferably, a load-bearing block is fixedly connected to the bottom of the side retaining dam. The load-bearing block is an isosceles trapezoid, and the landfill area is a trapezoid with a lower base smaller than the upper base. The shape of the landfill area is used to prevent excessive pressure at the bottom.

[0011] Preferably, the surface of the steel fiber reinforced concrete layer is provided with a first drainage groove and a second drainage groove. The first drainage groove and the second drainage groove intersect to form a cross shape. The surfaces of the first drainage groove and the second drainage groove are coated with a waterproof layer. Drainage is achieved through the first drainage groove and the second drainage groove to avoid and reduce corrosion.

[0012] The technical effects and advantages provided by this utility model in the above technical solution are as follows: By combining side retaining dams and composite reinforcement mechanisms, carbon fiber geogrids provide high tensile strength to effectively resist tensile deformation caused by uneven settlement of the backfill. A flexible layer composed of rubber particles, bentonite, and basalt fibers combines elastic deformation and impermeability to coordinate interlayer stress. Diamond-shaped reinforcing ribs and a polyurethane wear-resistant coating are set on the surface of the steel fiber reinforced concrete layer to improve its resistance to mechanical compaction and UV aging. The concrete filling board is precisely positioned with diamond-shaped reinforcing ribs through snap-fit ​​grooves, and rubber edges ensure sealing and improve construction efficiency. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the composite reinforcement mechanism of this utility model; Figure 2 This is a bottom view schematic diagram of the composite reinforcement mechanism of this utility model; Figure 3 This is a schematic diagram of the overall structure of this utility model; Figure 4 This is a bottom view schematic diagram of the concrete filling board structure of this utility model.

[0015] Explanation of reference numerals in the attached figures: 1. Side retaining dam; 2. Composite reinforcement mechanism; 201. Carbon fiber geogrid; 202. Flexible layer; 203. Steel fiber reinforced concrete layer; 204. Installation groove; 205. Rhomboid reinforcing bar; 206. Concrete filling board; 207. Lightweight ceramsite concrete; 208. Rubber edge; 209. Clip groove; 3. Drainage channel one; 4. Drainage channel two; 5. Geotextile; 6. Load-bearing block; 7. Landfill area; 8. Laterally reinforced area. Detailed Implementation

[0016] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0017] This utility model provides, for example Figure 1-4The solid waste flexible landfill reinforcement mechanism shown includes a side retaining dam 1. A composite reinforcement mechanism 2 is installed inside the side retaining dam 1. The composite reinforcement mechanism 2 includes several sets of carbon fiber geogrids 201 laid inside the side retaining dam 1. A flexible layer 202 is fixedly connected to the top of the carbon fiber geogrids 201. The flexible layer 202 is composed of rubber particles and bentonite, and basalt fibers are mixed inside the flexible layer 202. A steel fiber reinforced concrete layer 203 is fixedly connected to the top of the flexible layer 202. Four sets of installation grooves 204 are formed on the surface of the steel fiber reinforced concrete layer 203. Rhomboid reinforcing ribs 205 are fixedly connected to the bottom wall of the installation grooves 204. A concrete filling plate 206 is installed inside the installation grooves 204. The steel fiber reinforced concrete layer 203 and the concrete... The surface of the soil filling board 206 is coated with a polyurethane wear-resistant coating. A composite structure is formed by carbon fiber geogrid 201, flexible layer 202 and steel fiber reinforced concrete layer 203, which takes into account both compressive strength and crack resistance. The outer wall of the concrete filling board 206 is fixedly connected with a rubber edge 208. The bottom end of the concrete filling board 206 is provided with a snap-fit ​​groove 209. The snap-fit ​​groove 209 is consistent with the shape of the diamond reinforcing rib 205. The concrete filling board 206 is installed by cooperating with the snap-fit ​​groove 209 and is reinforced by the rubber edge 208. The interior of the carbon fiber geogrid 201 is filled with lightweight ceramsite concrete 207. The bottom end of the carbon fiber geogrid 201 is welded with geotextile 5, which is used to cover the surface of the waste.

[0018] Refer to the instruction manual appendix Figure 1-4 The inner wall of the side retaining dam 1 is fixedly connected with a lateral reinforcement zone 8. The interior of the side retaining dam 1 has two sets of filling zones 7. The lateral reinforcement zone 8 provides a foundation for the laying of the composite reinforcement mechanism 2. The bottom of the side retaining dam 1 is fixedly connected with a load-bearing block 6, which is an isosceles trapezoid. The filling zone 7 is a trapezoid with a lower base smaller than the upper base. The shape of the filling zone 7 is used to prevent excessive pressure at the bottom. The surface of the steel fiber reinforced concrete layer 203 has a drainage groove 1 3 and a drainage groove 2 4. The drainage groove 1 3 and the drainage groove 2 4 intersect and form a cross shape. The surfaces of the drainage groove 1 3 and the drainage groove 2 4 are coated with a waterproof layer. Drainage is achieved through the drainage groove 1 3 and the drainage groove 2 4 to avoid corrosion. It is mainly composed of two parts: the side retaining dam 1 and the composite reinforcement mechanism 2. Through the cooperation of the side retaining dam 1 and the composite reinforcement mechanism 2, the carbon fiber geogrid 201 provides high tensile strength to effectively resist the tensile deformation caused by uneven settlement of the landfill. The flexible layer 202 is composed of rubber particles, bentonite and basalt fiber, which has both elastic deformation capacity and impermeability, and coordinates the interlayer stress. The steel fiber reinforced concrete layer 203 is provided with diamond-shaped reinforcing ribs 205 and polyurethane wear-resistant coating to improve the ability to withstand mechanical rolling and ultraviolet aging. The concrete filling plate 206 is precisely positioned with the diamond-shaped reinforcing ribs 205 through the snap-fit ​​groove 209, and the rubber edge 208 ensures the sealing and improves the construction efficiency.

[0019] The working principle of this practical application is as follows: Refer to the instruction manual appendix Figure 1-4 When the landfill is subjected to load, the pressure first acts on the steel fiber reinforced concrete layer 203. The uniformly distributed hook-shaped steel fibers inside and the prefabricated diamond-shaped reinforcing ribs 205 on the surface form a three-dimensional reinforcement network. Through the fiber pull-out effect and the geometric constraint of the reinforcing ribs, the concentrated stress is effectively dispersed throughout the entire plane. The load continues to be transferred downwards to the flexible layer 202. Under pressure, the rubber particles in this layer undergo elastic deformation. Their Poisson's ratio effect causes adjacent particles to compress against each other, thereby absorbing and storing impact energy. Simultaneously, the uniformly dispersed basalt fibers cross the potential impact... In the microcracked area, the fiber bridging effect prevents the crack from expanding; when leachate seeps in, the bentonite in the flexible layer 202 expands between layers when it comes into contact with water, and the expansion pressure pushes the particles to fill the surrounding pores, realizing the dynamic self-repair of the crack. This process is supported by the lightweight ceramsite concrete 207 inside the carbon fiber geogrid 201, and the flexible transition with the waste body is achieved through the welded geotextile 5, forming a complete stress dispersion-energy absorption-crack inhibition-self-repair collaborative working mechanism structure, ensuring the integrity and seepage prevention reliability during long-term service. Surface water flows into a collection well at the intersection of drainage channel 3 and drainage channel 4, and is discharged off-site through a drainage pipe (not shown in the diagram). A waterproof coating prevents leachate from back-eroding the steel fiber reinforced concrete layer 203.

[0020] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A solid waste flexible landfill reinforcement mechanism, comprising a side retaining dam (1), characterized in that: The side retaining dam (1) is equipped with a composite reinforcement mechanism (2). The composite reinforcement mechanism (2) includes several sets of carbon fiber geogrids (201) laid inside the side retaining dam (1). A flexible layer (202) is fixedly connected to the top of the carbon fiber geogrid (201). A steel fiber reinforced concrete layer (203) is fixedly connected to the top of the flexible layer (202). Four sets of installation grooves (204) are opened on the surface of the steel fiber reinforced concrete layer (203). A diamond-shaped reinforcing bar (205) is fixedly connected to the bottom wall of the installation groove (204). A concrete filling plate (206) is provided inside the installation groove (204). The surfaces of the steel fiber reinforced concrete layer (203) and the concrete filling plate (206) are sprayed with a polyurethane wear-resistant coating.

2. The solid waste flexible landfill reinforcement mechanism according to claim 1, characterized in that: The outer wall of the concrete filling plate (206) is fixedly connected with a rubber edge (208), and the bottom end of the concrete filling plate (206) is provided with a snap-fit ​​groove (209), which is consistent with the shape of the rhomboid reinforcing rib (205).

3. The solid waste flexible landfill reinforcement mechanism according to claim 1, characterized in that: The interior of the carbon fiber geogrid (201) is filled with lightweight ceramsite concrete (207), and geotextile (5) is welded to the bottom end of the carbon fiber geogrid (201).

4. The solid waste flexible landfill reinforcement mechanism according to claim 1, characterized in that: The inner wall of the side retaining dam (1) is fixedly connected with a lateral reinforcement zone (8), and two sets of landfill zones (7) are opened inside the side retaining dam (1).

5. The solid waste flexible landfill reinforcement mechanism according to claim 4, characterized in that: The bottom of the side retaining dam (1) is fixedly connected to a load-bearing block (6), which is an isosceles trapezoid, and the landfill area (7) is a trapezoid with a lower base smaller than the upper base.

6. The solid waste flexible landfill reinforcement mechanism according to claim 1, characterized in that: The surface of the steel fiber reinforced concrete layer (203) is provided with a drainage groove 1 (3) and a drainage groove 2 (4). The drainage groove 1 (3) and the drainage groove 2 (4) intersect and form a cross shape. The surfaces of the drainage groove 1 (3) and the drainage groove 2 (4) are coated with a waterproof layer.

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