Geosynthetic clay liner for artificial lake wetland and construction method thereof

Abstract

The invention discloses a geosynthetic clay liner for an artificial lake wetland. The geosynthetic clay liner sequentially comprises an HDPE film layer, a non-woven geotechnical cloth layer, a sodiumbentonite layer and a plastic woven film yarn geotextile layer, wherein the HDPE film layer, the non-woven geotechnical cloth layer, the sodium bentonite layer and the plastic woven film yarn geotextile layer are sequentially bonded. A construction method of the geosynthetic clay liner comprises the following steps of basic layer processing, geosynthetic clay liner laying preparation stage, geosynthetic clay liner laying and protective layer laying. The construction is simple, only laying and backfilling are needed, special installing devices are not needed, the laid geosynthetic clay liner isdownstream in lap joint in the water flowing direction after a structure layer meets the requirements, namely the upstream geosynthetic clay liner is in lap joint with the downstream geosynthetic clay liner, and when the geosynthetic clay liner is laid at all boundaries of the lake bottom, the geosynthetic clay liner is well in lap joint with the geosynthetic clay liner reserved on a slope side or retaining wall.

Description

technical field [0001] The invention belongs to the engineering field of artificial lakes (wetland water systems), and in particular relates to a bentonite waterproof blanket used in artificial lake wetlands and a construction method thereof. Background technique [0002] The artificial lake wetland is backfilled with the existing excavated earth and rock, mainly weathered shale. Without waterproof and seepage treatment, a large amount of water needs to be replenished, and the cost of water is high, which will greatly increase the maintenance cost. This is also a long-term difficulty in the waterproof and anti-seepage construction of the bottom plate and side walls of artificial lakes (garden water systems). It is used in the lake (garden water system) project. As a new type of waterproof material, bentonite waterproof blanket (GCL) has successfully solved the shortcomings of other waterproof materials because of its convenient construction, relatively low requirements for ...

AI Technical Summary

Problems solved by technology

[0002] The artificial lake wetland is backfilled with the existing excavated earthwork, which is mainly weathered shale. Without waterproof and leakage treatment, a large amount of water needs to be replenished, and the cost of water is high, which will greatly increase the maintenance cost

This is also a long-term difficulty in the waterproof and anti-seepage construction of the bottom plate and side walls of artificial lakes (garden water systems). Used in lake (garden water system) engineering