Large-sized material storage yard gas guide and discharge well and well cementing construction method

Abstract

The embodiment of the invention relates to a large-scale material storage yard gas guide and discharge well and a well cementing construction method. The guide and discharge well comprises a guide and discharge well hole arranged in a material storage yard, a barrel-shaped skeleton arranged in the guide and discharge well hole, a flexible filtering layer wrapping the barrel-shaped skeleton, a crushed rock filtering layer filled between the wall of the guide and discharge well hole and the flexible filtering layer, a sealed barrel which is sealed outside the flexible filtering layer and arranged at the upper part of the guide and discharge, well as well as a well cap which seals and covers the sealed barrel and is provided with a gas guide and discharge port. The large-scale material storage yard gas guide and discharge well provided by the embodiment of the invention has simple structure, and better stability, is convenient for well cementing construction and maintenance and hardly generates displacement. Air exhaust and water draining can be simultaneously realized, and the guide and discharge well can be prevented from being blocked by sludge and crushed garbage. The gas guide and discharge well also can be popularized and applied to the processes of drying, ventilating, gas replacing and water draining and the line in a large and medium-sized material aggregating process inthe industries of grain and deep processing, chemical industry, medical industry and the like.

Description

technical field [0001] The invention relates to a gas guide and exhaust technology for material piles, in particular to a gas guide and exhaust well and a cementing construction method in a large-scale material storage yard. Background technique [0002] Landfill is the main treatment method for urban domestic waste in my country. The anaerobic decomposition of the waste in the landfill will generate a large amount of landfill gas, and at the same time, the waste body will seep out high concentrations of toxic and harmful sewage. Landfill gas is a recyclable energy source and also a polluting gas. Therefore, in order to comprehensively utilize landfill gas to turn waste into treasure, the establishment of gas diversion wells in landfills is currently a domestic gas collection. Main way. Current landfill guide wells such as Figure 1 As shown in the figure, its working principle is: after the landfill gas is filtered by the gravel gabion 102, the gas is exported by the flowe...

AI Technical Summary

Problems solved by technology

After 1 to 2 years of operation of this type of drainage well, many problems such as blockage of the drainage pipe, dislocation of the gabion, and inability to discharge sewage will appear. Uneven settlement, dislocation of gas-guiding gabion, reduction of biogas volume, environmental pollution such as discharge through the side slope of the pile, ground cracks, etc.

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