Overall drainage construction method of extra-large garbage dump

Abstract

The invention discloses an overall drainage construction method of an extra-large garbage dump, comprising: construction of a double-layer composite shaft and construction of a multilayer-enclosed blind ditch; the method provides vertical-transverse and deep-shallow synchronous drainage for the extra-large garbage dump. A shaft is composed of a reinforcement cage covered with spread geogrid and perforated galvanized steel pipes covered with geotextile; the shaft can function to better fix a wellhead and can drain water faster; a horizontal guide-drainage blind ditch is composed of geomembrane,inflected geogrid and perforated pipes and has good deformability and high guiding and drainage speed; by combining the horizontal guide-drainage ditch with the double-layer composite shaft, the drainage problem of a landfill can be greatly improved.

Description

technical field [0001] The invention belongs to urban and urban domestic garbage landfill projects, and more specifically relates to a construction method for integral drainage of super-large garbage dumps. Background technique [0002] Municipal solid waste treatment mainly includes landfill, incineration and composting, among which landfill treatment is the most widely used. In super-large landfills, due to the heavy landfill tasks, there is a lot of leachate accumulated every day, and the drainage pressure is very high. If the leachate water level cannot be effectively reduced, the entire landfill may become unstable. The traditional well drilling and drainage process often has the problem of low efficiency due to garbage clogging, and switching to other forms of drainage is not only expensive, but also difficult to construct, and the efficiency is difficult to meet the expected requirements. Difficult drainage problems make it difficult for landfills to continue to expa...

AI Technical Summary

Problems solved by technology

In super-large landfills, due to the heavy landfill tasks, there is a lot of leachate accumulated every day, and the drainage pressure is very high. If the leachate water level cannot be effectively reduced, the entire landfill may become unstable.

The traditional well drilling and drainage process often has the problem of low efficiency due to garbage clogging, and switching to other forms of drainage is not only expensive, but also difficult to construct, and the efficiency is difficult to meet the expected requirements

Difficult drainage problems make it difficult for landfills to continue to expand, and new landfills are difficult to advance in terms of location and cost

Images