Tool and method for constructing composite anti-seepage underground continuous wall by using HDPE membranes

Abstract

The invention discloses a tool and method for constructing a composite anti-seepage underground continuous wall by using HDPE membranes. The tool for constructing the composite anti-seepage underground continuous wall by using the HDPE membrane comprises a plurality of HDPE membrane units and membrane installation devices, wherein the HDPE membrane units are continuously laid in self-setting mortar holes in a front-and-back direction; the membrane installation devices are used for making the HDPE membrane units put into the self-setting mortar holes. Each HDPE membrane unit comprises one HDPEmembrane, a convex joint at the front end of the HDPE membrane and a concave joint at the rear end of the HDPE membrane. The convex joint at the front end of the rear HDPE membrane can be inserted into the concave joint at the rear end of the front HDPE membrane so that the front HDPE membrane and the rear HDPE membrane can be in buckled connection. Perfect connection of the membrane joints can beachieved, and the membranes and self-setting mortar form an underground anti-seepage curtain body low in permeability and high in reliability.

Description

technical field [0001] The invention relates to the technical field of anti-seepage of underground diaphragm walls, in particular to a tool and method for constructing a composite anti-seepage underground diaphragm wall by using HDPE diaphragms. Background technique [0002] The self-setting mortar underground diaphragm wall has been widely used in anti-seepage and interception control projects in civil engineering, mining, water conservancy and environmental engineering fields, especially for special areas with high groundwater levels and soft strata that are prone to subsidence. The self-setting mortar continuous wall generally has a permeability coefficient of 10-8m / s, which cannot meet the environment with higher requirements such as pollutant isolation, and the strength of the self-setting mortar wall is about 1MPa, the strength is low, and the ability to resist chemical erosion is poor. The durability of the self-setting mortar underground diaphragm wall alone is diffi...

AI Technical Summary

Problems solved by technology

The self-setting mortar continuous wall generally has a permeability coefficient of 10-8m / s, which cannot meet the environment with higher requirements such as pollutant isolation, and the strength of the self-setting mortar wall is about 1MPa, the strength is low, and the ability to resist chemical erosion is poor. The durability of the self-setting mortar underground diaphragm wall alone is difficult to meet the requirements under specific conditions

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