Joint connecting device of self-setting mortar continuous wall composite HDPE membrane and method of device

Abstract

The invention discloses a joint connecting device of a self-setting mortar continuous wall composite HDPE membrane and a method of the device. The joint connecting device comprises a first membrane sleeve of a first HDPE membrane, a second membrane sleeve of a second NDPE membrane and a HDPE membrane connecting piece, wherein the HDPE membrane connecting piece is used for connecting the first membrane sleeve and the second membrane sleeve to connect the first HDPE membrane and the second HDPE membrane together. The device greatly increases the use depth of vertical laying of HDPE membranes.

Description

technical field [0001] The invention relates to engineering fields such as civil engineering, mining, water conservancy and environment, and in particular to a joint connection device and method for a self-setting mortar continuous wall composite HDPE membrane. Background technique [0002] The self-setting mortar underground diaphragm wall has been widely used in anti-seepage and interception control projects in the above fields, especially for special areas with high groundwater levels and soft strata that are prone to subsidence, or for the protection of salt lakes or heavy chemical environment areas with a large proportion of groundwater. Infiltration system construction. [0003] 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 self-setting mortar wall has a low strength and poor resistance to chemical erosion due to its strength of...

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Problems solved by technology

[0007] (1). The ideal connection method in foreign countries is to use multi-machine co-extrusion technology to produce HDPE film connection locks, but the process equipment and products are expensive, such as US patent US005497097A,

[0008] (2). In China, the connection of HDPE diaphragms is usually achieved by increasing the length of the diaphragm laying boundary, that is, increasing the penetration path. The laying depth can only be limited to a small depth range, and because there is no constraint between the diaphragms And contact, the existing interval increases, and the durability and reliability guarantee are poor

[0009] (3). There is a lot of waste of overlapping diaphragms in the usual construction methods in China, which affects the application in some fields with high standard requirements, such as the field of environmental protection.

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