Geomembrane anti-seepage processing method for city landscape lake

Abstract

The invention relates to a geomembrane antiseepage treatment method for landscape lake, including a substrate antiseepage treatment and a vertical sidewall antiseepage treatment: in the substrate antiseepage treatment, excavate units are divided vertical to the geomembrane laying direction, for the place with the depth of silt less than two meters, the width of two geomembranes is made as one excavate unit, for the place with the depth of silt more than or equal to two meters, the width of one geomembranes is made as one excavate unit, each unit is excavated along the geomembrane laying direction, the excavated silt is put in the unit beside the construction unit, the unit is laid with the geomembrane immediately after the unit is excavated, the silt is backfilled after the laying and welding of the geomembrane is finished, and the geomembrane antiseepage treatment can be performed under the condition of not removing the silt; and in the vertical sidewall antiseepage treatment, an excavator is adopted to trim the stones on the periphery of the lake bottom, then revetment foundation trenches are excavated, new strip stone protection wall is built in the foundation trenches after the laying of geomembranes, then the flanges of the geomembrane are fixed among the top layer of strip stone, and thereby solving the defaults that the vertical side antiseepage geomembrane is not easy to retract edges and the edges are exposed outside.

Description

technical field [0001] The invention relates to a sludge treatment and vertical side wall treatment technology for anti-seepage of a composite geomembrane in an urban landscape lake. Background technique [0002] Composite geomembrane is a geosynthetic material composed of geotextile and polymer materials. It has excellent physical and mechanical properties, impermeability, aging resistance and high elongation. The anti-seepage material has been widely used in water conservancy and hydropower projects, road engineering, tunnel engineering, garbage treatment plants, artificial lake anti-seepage projects, and the permeability coefficient is generally 10. -11 ~10 -12 cm / s, the anti-seepage effect is very good. However, at present, the silt on the base must be removed when the material is used, and it is required to be rolled and compacted to avoid the cracking of the membrane due to the subsidence of the foundation, which limits its application in the case where it is difficu...

AI Technical Summary

Problems solved by technology

However, at present, when the material is used, the silt on the base must be removed, and it is required to be rolled and compacted to avoid the cracking of the membrane due to the subsidence of the foundation, which limits its application in the case where it is difficult to remove the silt.

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