Earth-rock cofferdam foundation anti-seepage curtain and manufacturing method thereof

Abstract

The invention provides an earth-rock cofferdam foundation anti-seepage curtain and a construction method. The anti-seepage curtain main body is a curtain-shaped curtain made of a steel strand and an impermeable membrane; the steel strand is arranged at the bottom of the impermeable membrane and connected with the bottom of the impermeable membrane, fixing columns with the height not smaller than that of the impermeable membrane are arranged on the two sides of the curtain-shaped curtain, the two ends of the steel strand penetrate out of a soil layer along the fixing columns and are fixed, andthe two sides of the impermeable membrane are connected with the fixing columns on the two sides respectively. The method has the following advantages: 1) compared with groove-drawing and clay-backfilling, the method has no raw material regional restriction; 2) links of excavation, backfilling and the like are omitted, the method is simple and feasible, and the construction period can be effectively shortened; 3) equivalently, the impermeable membrane in the cofferdam extends into the riverbed sand layer, the impermeable membrane and the impermeable membrane in the cofferdam can be made of thesame material, the material is universal, purchasing can be further facilitated, the material and the transportation cost can be saved, and 4) the embeddable depth is large, and the embeddable depthcan be flexibly adjusted according to the impermeable requirement.

Description

technical field [0001] The invention relates to the field of civil engineering, in particular to an anti-seepage curtain technology for an earth-rock cofferdam foundation. Background technique [0002] At present, in the field of engineering, the method of pumping grooves and backfilling clay is usually used for the anti-seepage of earth-rock cofferdam foundations. Although it can achieve a certain anti-seepage effect, it has the following shortcomings: [0003] 1. The depth of pumping groove backfilling clay is generally less than 3 meters. For river beds with thick river sand thickness, the anti-seepage and interception capacity is limited; [0004] 2. Clay is not everywhere, there are geographical restrictions, and the cost of mining and transportation is high. Contents of the invention [0005] The first object of the present invention is to provide an anti-seepage curtain for an earth-rock cofferdam foundation, which has a better anti-seepage effect for the cofferdam...

AI Technical Summary

Problems solved by technology

[0003] 1. The depth of pumping groove backfilling clay is generally less than 3 meters. For river beds with thick river sand thickness, the anti-seepage and interception capacity is limited;

[0004] 2. Clay is not everywhere, there are geographical restrictions, and the cost of mining and transportation is high

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