Composite anti-seepage structure of pool-shaped water storage structure containing partition wall and construction method

Abstract

The invention relates to a composite anti-seepage structure of a pool-shaped water storage structure containing a partition wall and a construction method, and belongs to the technical field of anti-seepage engineering / geotechnical engineering.The anti-seepage structure comprises the reinforced concrete partition wall, the partition wall is provided with a vertical wall and a base, rectangular grooves are formed in the two sides of the root, and a partition wall concrete cushion layer is arranged on the bottom face of the base; the base and the partition wall concrete cushion layer are arranged in the cohesive soil compaction cushion layer; a bentonite waterproof blanket and a high-density polyethylene geomembrane are sequentially laid on the upper surface of the cohesive soil compaction cushion layer from bottom to top and naturally placed in the rectangular groove at the root of the partition wall, and the rectangular groove is filled with expansive cement mortar. Non-woven geotextile is paved on the upper part of the high-density polyethylene geomembrane and extends to the outer surface of a vertical wall of the reinforced concrete partition wall; the inner wall of the rectangular groove and the outer surface of the vertical wall are covered with a plurality of anti-seepage coatings. According to the invention, the geomembrane, the waterproof blanket and the partition wall can form an impermeable joint; wastewater can be prevented from leaking through the partition wall body, and the leakage path of waste liquid in the pool is completely closed.

Description

technical field [0001] The invention belongs to the technical field of anti-seepage engineering / geotechnical engineering, and specifically relates to a composite anti-seepage structure and a construction method of a pool-like water storage structure with a partition wall. Background technique [0002] The non-radioactive or low-level radioactive waste liquid produced by certain nuclear engineering projects needs to be evaporated naturally through the evaporation pond. Although these waste liquids are harmless or extremely low to the environment, based on the requirements of environmental protection and the perspective of public acceptance Considering that, it is still necessary to carry out strict anti-seepage and waterproof design for this type of evaporation pond to ensure that the evaporation pond discharges pollutants into the groundwater as little as possible through leakage during operation. [0003] The composite anti-seepage structure of high-density polyethylene geo...

AI Technical Summary

Problems solved by technology

Therefore, the existence of the partition wall will separate the geomembrane and the anti-seepage blanket, so that different materials are directly connected. If the joint is not handled properly, it will become a weak point of the anti-seepage system, which is very likely to cause leakage of waste liquid in the evaporation pool.

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