Waterproof and drainage system and construction method of low-medium radioactive waste grotto type disposal site

Abstract

The invention discloses a waterproof and drainage system and a construction method of a low-medium radioactive waste grotto type disposal site. The waterproof and drainage system comprises a seepage-preventing side wall and base plate and a waterproof ceiling, wherein the seepage-preventing side wall and base plate is located in a grotto and is U-shaped, the waterproof ceiling is in an inverted-U shape, the waterproof ceiling and the seepage-preventing side wall and base plate are in a buckled-closed state, a clay side wall and base plate is arranged on the inner side of the seepage-preventing side wall and base plate, waste buckets are arranged inside the clay side wall and base plate, an open water draining drain is formed in the outside of the seepage-preventing side wall and base plate and located below the end of the waterproof ceiling, a crane beam is arranged at the top of the seepage-preventing side wall and base plate and located inside the waterproof ceiling, a crane, a grouting pipeline and a spray nozzle are arranged on the crane beam, and a top arched embedded pipeline is arranged in a grotto top arch. The problem that a grotto protection structure existing in an existing project measure is simple and can only retard and reduce the release speed and amplitude of pollutants from a protective facility is well solved, and a series of problems including personal radiation injury and the like due to the grouting and vibrating construction in gaps among the waste buckets are solved.

Description

technical field [0001] The invention relates to nuclear power technology, in particular to a water-proof and drainage system and a construction method for a cavern type disposal site of low and intermediate radioactive waste. Background technique [0002] With the continuous development of the nuclear industry, a large amount of radioactive waste is bound to be produced. Effective and proper disposal of radioactive waste is related to the sustainable development of the nuclear industry and the safety of human living environment. [0003] Relevant regulations stipulate that nuclear waste can be divided into low, medium and high radioactive waste according to the level of radioactive activity. Among them, high-level radioactive waste is generally disposed of in deep geological layers, which is still in the research stage internationally, and high-level radioactive waste is in a temporary storage state. Low- and intermediate-level wastes are generally disposed of near the surf...

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the inadequacies of the above-mentioned existing background technology, and the single concrete structure existing in the existing waterproof and drainage measures for low and medium level radioactive waste cavern disposal sites cannot effectively prevent water, and can only slow down and reduce pollutants from protection. The release speed and magnitude of the facility, as well as the radiation damage caused by grouting and vibrating construction, and other related issues, have developed a low-level and intermediate-level radioactive waste cavern-type disposal site waterproof and drainage system and construction method, which can meet the requirements of the disposal site within the design period. Strict requirements for safety and durability

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