Method for vertically laying HDPE geomembranes underground

Abstract

The invention relates to a method for vertically laying HDPE geomembranes underground. In the method, a crane, a membrane expansion frame, a fixed depression bar and a balance weight are adopted. The method for vertically laying the geomembranes comprises the following steps; through the adoption of the technical scheme of the method disclosed by the invention, a vertical soft anti-seepage wall of continuous underground HDPE geomembranes can be established, so that migration and diffusion of contaminated soil or contaminants in underground water can be controlled, and further appropriate comprehensive methods for treating the contaminants can be adopted to gradually reduce and remove the contaminants, and recover the soil and water; the method disclosed by the invention is mature in equipment and technology, and safe to operate, and the vertical paving depth and the vertical paving speed can be flexibly controlled; the free combination of the balance weight and the HDPE geomembranes and the separation of the balance weight from the HDPE geomembranes are realized, and besides, the length and the width of the frame can be adjusted according to the needs of engineering, so that the construction efficiency is improved; the HDPE laying speed is controlled; the HDPE geomembranes can be stabilized and prevented from floating upwards; the purpose for vertically putting down the HDPE geomembranes is achieved by utilizing the free combination of the HDPE geomembranes and the membrane expansion frame and the separation of the HDPE geomembranes from the membrane expansion frame; and the continuity and the completeness of a wall body are guaranteed. The method disclosed by the invention is simple to operate, free from secondary pollution, safe and environmental friendly.

Description

technical field [0001] The invention relates to a laying method of HDPE geomembrane, in particular to a vertical underground laying method of HDPE geomembrane. Background technique [0002] In the prior art, with the rapid development of social economy, urbanization and industrialization are accelerating, urban garbage and industrial waste are increasing sharply, and petrochemical and mining smelting processes are putting more and more pressure on the environment. Sudden environmental pollution accidents occur frequently, the pollution characteristics are responsible, and the pollution degree is relatively deep. Contaminated soil, groundwater, and pollution sources that may leak into the ground need to be controlled urgently. The traditional rigid underground diaphragm wall has limited anti-seepage performance and cannot tolerate special pollutants. When it is necessary to lay a deep anti-seepage wall, the excavated underground The empty slots are filled with silt and seepe...

AI Technical Summary

Problems solved by technology

Contaminated soil, groundwater, and pollution sources that may leak into the ground need to be controlled urgently. The traditional rigid underground diaphragm wall has limited anti-seepage performance and cannot tolerate special pollutants. When it is necessary to lay a deep anti-seepage wall, the excavated underground The empty tank is full of silt and seeping groundwater, people cannot lay HDPE geomembrane

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