Overall drainage construction method of extra-large garbage dump

A construction method and garbage dump technology, applied in infrastructure engineering, soil protection, construction, etc., can solve the problems of heavy landfill tasks, difficulty in site selection and cost of new landfill sites, and high drainage pressure. Achieve the effects of reducing landslides of garbage dumps, good overall drainage effect, and reducing silting problems

Inactive Publication Date: 2018-06-29
GUANGZHOU FOURTH CONSTR
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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 d

Method used

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  • Overall drainage construction method of extra-large garbage dump
  • Overall drainage construction method of extra-large garbage dump

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Embodiment Construction

[0016] The overall drainage construction method for super-large garbage dumps includes double-layer composite shaft construction and multi-layer wrapped blind ditch construction.

[0017] refer to figure 1 , the diameter of the double-layer composite shaft is 1000mm, and the depth of the well is 25m. Before construction, workers wear labor protection products to prevent biogas poisoning, clean up garbage masks and waste pipelines, and lay steel boxes for mechanical walking on the garbage dump body 1; then Move the rotary excavator along the steel plate box to the designated position to drill a hole, install a casing on the upper part of the hole to prevent the hole from collapsing, and clean up the drilled garbage in time; wrap the steel cage 3 with a tiled geogrid 2, and put it vertically into the well hole 13 In the process, wrap the galvanized steel pipe 6 with a geotextile 5 and place it in the reinforcement cage 3 accurately; then use a hopper to put the crushed stone lay...

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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...

Claims

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Application Information

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IPC IPC(8): E02D3/10
CPCE02D3/10E02D3/106
Inventor 邹毅江涌波林君伟陈嘉威黎强原炜阳
Owner GUANGZHOU FOURTH CONSTR
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