Guiding and discharging device of silt geology geomembrane anti-seepage system

Abstract

The utility model discloses a sludge geology geomembrane anti-seepage system guiding and discharging device which comprises a guiding and discharging pipe arranged in an anti-seepage area, the guiding and discharging pipe is connected with a vacuum pump outside the anti-seepage area, the anti-seepage area comprises flow state solidified soil located on a sludge foundation, an anti-seepage material layer is laid on the flow state solidified soil, and the anti-seepage material layer is connected with the vacuum pump. A pressing and covering bag is arranged on the impermeable material layer; and the guide and discharge pipe is embedded in the flow-state solidified soil. The anti-seepage system solves the problem of application of the anti-seepage system caused by the fact that foundation treatment cannot be carried out under the silt geological condition and the problem that the anti-seepage system is possibly inflated under the membrane and possibly floats upwards due to the fact that an exhaust layer cannot be arranged below the anti-seepage system, and compared with the prior art, the anti-seepage system is more perfect and low in construction cost.

Description

Technical Field

[0001] The utility model relates to a drainage device for a silt geological geomembrane anti-seepage system, belonging to the technical field of geomembrane anti-seepage foundation measures. Background Art

[0002] In recent years, the use of geomembranes as the primary material for anti-seepage systems has been increasing. Due to their excellent tensile strength, high impact strength, impermeability, acid and alkali resistance, heat resistance, weather resistance, and abrasion resistance, geomembrane anti-seepage systems have been widely used in coastal construction. They are also widely used in river dams, reservoirs, diversion tunnels, highways, railways, airports, underground, and underwater projects.

[0003] Commonly used anti-seepage materials at the bottom of landfills include low-permeability natural clay layers, compacted clay, geomembranes, and clay liners. The anti-seepage layer is often a combination of these materials. For example, the composite liner currently used extensively abroad consists of a geomembrane in close contact with a layer of low-permeability material—geomembrane + compacted clay or geomembrane + clay liners. To promptly drain leachate and reduce the leachate head on the anti-seepage liner, a drainage layer must also be incorporated into the liner system.

[0004] Typically, silt geology areas contain silt 10-20 meters below the surface. This silt has strong water retention, high moisture content, weak foundation bearing capacity, and is highly susceptible to disturbance. Conventional anti-seepage system designs require costly treatment of the subsurface silt foundation to ensure its stability and prevent geomembrane cracking caused by settlement, which could lead to leakage in the anti-seepage system. Furthermore, the silt geology makes it impossible to construct a drainage and ventilation layer beneath the membrane, significantly impacting the reliability of the anti-seepage system.

[0005] There is little design information on anti-seepage systems for silt foundations in the existing technology, and there are no reference cases. Summary of the Invention

[0006] The technical problem to be solved by the utility model is: how to apply the traditional anti-seepage system under silt geological conditions, so as to solve the defect of insufficient reliability of the anti-seepage system caused by the lack of drainage and exhaust layer under the membrane.

[0007] In order to solve the above problems, the utility model provides a drainage device for a silt geological geomembrane anti-seepage system, which includes a drainage pipe arranged in the anti-seepage area, and the drainage pipe is connected to a vacuum pump outside the anti-seepage area. The anti-seepage area includes fluidized solidified soil located above the silt foundation, an anti-seepage material layer is laid on the fluidized solidified soil, and a pressure covering bag is provided on the anti-seepage material layer; the drainage pipe is embedded in the fluidized solidified soil.

[0008] Preferably, the thickness of the fluidized solidified soil is not less than 300 mm.

[0009] Preferably, the drainage pipe includes a drainage main pipe and drainage branch pipes that are interconnected, and a plurality of drainage main pipes are arranged in parallel and interconnected to be connected to a vacuum pump outside the anti-seepage area.

[0010] More preferably, branch drain pipes are arranged on both sides of each main drain pipe.

[0011] Furthermore, the drainage branch pipes on both sides of the drainage main pipe are arranged at intervals.

[0012] More preferably, the diameter of the drainage main pipe is DN50, and the diameter of the drainage branch pipe is DN20.

[0013] Preferably, the drainage pipe is made of HDPE pipe, the anti-seepage material layer is made of HDPE anti-seepage membrane or GCL bentonite, and the pressure bag is filled with pebbles.

[0014] More preferably, the particle size of the pebbles is 60-100 mm.

[0015] Preferably, the compression bags are of a plum blossom-shaped distribution structure.

[0016] More preferably, the distance between two adjacent compression bags is 6 meters.

[0017] The fluidized solidified soil is prepared by mixing alkali residue, fly ash and cement in a mixing ratio of 4:4:2.

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

[0019] 1. Solved the problem of anti-seepage system application caused by the inability to carry out foundation treatment under silt geological conditions;

[0020] 2. Solve the problem of swelling under the membrane due to the inability to set up a venting layer under the anti-seepage system, which may cause the membrane to float;

[0021] 3. The utility model is more perfect than the existing technology and has low construction cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a top view of the drainage device of the silt geological geomembrane anti-seepage system provided by the utility model. DETAILED DESCRIPTION

[0023] In order to make the present invention more clear and easy to understand, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0024] Example

[0025] like Figure 1As shown, a drainage device of a silt geological geomembrane anti-seepage system provided by the utility model includes a drainage pipe 2 arranged in the anti-seepage area, and the drainage pipe 2 is connected to a vacuum pump 4 outside the anti-seepage area. The anti-seepage area includes a fluidized solidified soil 1 located above the silt foundation, an anti-seepage material layer 3 is laid on the fluidized solidified soil 1, and a pressure covering bag 5 is provided on the anti-seepage material layer 3; the drainage pipe 2 is embedded in the fluidized solidified soil 1.

[0026] The thickness of the fluidized solidified soil 1 is not less than 300 mm.

[0027] The drainage pipes 2 include interconnected main drainage pipes 21 and branch drainage pipes 22. Multiple main drainage pipes 21 are arranged in parallel and interconnected, connecting to the vacuum pump 4 outside the anti-seepage area. Branch drainage pipes 22 are arranged on both sides of each main drainage pipe 21. The branch drainage pipes 22 on both sides of the main drainage pipes 21 are spaced apart.

[0028] The diameter of the drainage main pipe 21 is DN50, and the diameter of the drainage branch pipe 22 is DN20.

[0029] The drainage pipe 2 is made of HDPE pipe, the anti-seepage material layer 3 is made of HDPE anti-seepage membrane or GCL bentonite, and the pressure bag 5 is filled with pebbles, and the particle size of the pebbles is 60-100 mm.

[0030] The pressure-covering bags 5 are distributed in a plum blossom shape, and the distance between two adjacent pressure-covering bags 5 is 6 meters.

[0031] The fluidized solidified soil 1 is prepared by mixing alkali residue, fly ash and cement in a mass ratio of 4:4:2.

Claims

1. A drainage device for a silt geological geomembrane anti-seepage system, characterized in that: The invention comprises a drainage pipe (2) arranged in an anti-seepage area, the drainage pipe (2) being connected to a vacuum pump (4) outside the anti-seepage area, the anti-seepage area comprising fluidized solidified soil (1) located on a silt foundation, an anti-seepage material layer (3) being laid on the fluidized solidified soil (1), and a pressure bag (5) being provided on the anti-seepage material layer (3); the drainage pipe (2) being embedded in the fluidized solidified soil (1).

2. The drainage device for the silt geological geomembrane anti-seepage system according to claim 1, characterized in that: The thickness of the fluidized solidified soil (1) is not less than 300 mm.

3. The drainage device for the silt geological geomembrane anti-seepage system according to claim 1, characterized in that: The drainage pipe (2) comprises a drainage main pipe (21) and drainage branch pipes (22) that are interconnected. A plurality of drainage main pipes (21) are arranged in parallel and interconnected to be connected to a vacuum pump (4) outside the anti-seepage area.

4. The drainage device for the silt geological geomembrane anti-seepage system according to claim 3, characterized in that: Each drainage main pipe (21) is provided with drainage branch pipes (22) on both sides.

5. The drainage device for the silt geological geomembrane anti-seepage system according to claim 4, characterized in that: The drainage branch pipes (22) on both sides of the drainage main pipe (21) are arranged at intervals.

6. The drainage device for the silt geological geomembrane anti-seepage system according to claim 3, characterized in that: The diameter of the drainage main pipe (21) is DN50, and the diameter of the drainage branch pipe (22) is DN20.

7. The drainage device for the silt geological geomembrane anti-seepage system according to claim 1, characterized in that: The drainage pipe (2) is made of HDPE pipe, the anti-seepage material layer (3) is made of HDPE anti-seepage membrane or GCL bentonite, and the pressure bag (5) is filled with pebbles.

8. The drainage device for the silt geological geomembrane anti-seepage system according to claim 7, characterized in that: The particle size of the pebbles is 60-100 mm.

9. The drainage device for the silt geological geomembrane anti-seepage system according to claim 1, characterized in that: The pressing bag (5) is a plum blossom-shaped distribution structure.

10. The drainage device for the silt geological geomembrane anti-seepage system according to claim 9, characterized in that: The distance between two adjacent pressure-covering bags (5) is 6 meters.

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