Waste landfill site preventing landfill gas escape by using waterproof mat

Abstract

The invention provides a trash landfill preventing the leakage of the landfill gas using a waterproof sheeting, which comprises at least one layer of trash landfill layer which becomes smaller upwards forming an overburden layer at the top, a dike part arranged at the edge of the trash landfill layer for providing the trash landfill space, an internal road forming in the dike part for dividing the landfill area of the trash, a V-shaped sandy soil side ditch forming at the boundary part of the dike part and the overburden layer for discharging rainwater, a leaching water vertical discharging well for transporting the leaching water produced in the trash landfill layer to a leaching water process station, comprising a hole tube for collecting the leaching water and a groundwork for support, a landfill gas collecting well for transporting the landfill gas to the landfill gas process equipment comprising a guide wall, a hole tube, a landfill gas transfer pipeline connected to the hole tube and a groundwork for support formed at the periphery of the guide wall exposed out of the guide wall and a waterproof sheeting forming at a chap part of the overburden layer at the trash landfill layer.

Description

technical field [0001] The invention relates to a garbage landfill, in particular to a garbage landfill which can use a waterproof pad to prevent landfill gas from leaking out. Background technique [0002] Landfills are landfills for domestic waste generated in human life and waste generated in industrial sites. They are operated by the government and local authorities, and their size varies according to the amount of waste they store. [0003] Usually, the method of landfilling garbage is as follows: After the garbage is piled up to a certain height, cover it with soil or a similar shelter (hereinafter referred to as "covering soil layer"), and repeat the above process, after several years to Waste accumulated over decades of natural decomposition. In the landfill, instead of completing the predetermined landfill height at one time, a layer is piled up at a landfill height of about 5m, in which the height of the garbage is about 4.5m, and a low-permeability layer of about...

AI Technical Summary

Problems solved by technology

[0006] Considering the cracks that may occur in the landfill, first of all, the landfilled garbage has various components, so uneven settlement will occur inside the landfill layers 20a and 20b, and cracks will appear on the surface of the covering soil layer 22b. , and, since the internal road 12 and the garbage layers 20a, 20b are made of different materials, cracks occur at the boundary between the internal road 12 and the garbage layers 20a, 20b due to uneven settlement.

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