AHP (Analytic Hierarchy Process)-based high-level radioactive waste geological repository site suitability quantitative evaluation method

Abstract

The invention belongs to the technical field of nuclear facility decommissioning and radioactive waste treatment, and particularly relates to an AHP (Analytic Hierarchy Process)-based high-level radioactive waste geological repository site suitability quantitative evaluation method. The method comprises the following steps: 1, indexes for high-level radioactive waste geological repository site suitability quantitative evaluation are determined; 2, a high-level radioactive waste geological repository site suitability evaluation hierarchical structure model is built; 3, a high-level radioactive waste geological repository site suitability evaluation hierarchical structure model judgment matrix is built; and 4, different site selection schemes are ranked comprehensively. Three difficult problems of how to build the hierarchical structure model, how to build the judgment matrix and how to comprehensively and quantitatively judge advantages and disadvantages of different site selection schemes when the AHP theory is applied to the high-level radioactive waste geological repository site suitability quantitative evaluation can be solved, and quantitative evaluation on the suitability of a large, complicated and extra long-safety evaluation period site for the high-level radioactive waste geological repository can be carried out.

Description

technical field [0001] The invention belongs to the technical field of nuclear facility decommissioning and radioactive waste treatment, and specifically relates to an AHP-based method for quantitatively evaluating the site suitability of a geological disposal storehouse for high-level radioactive waste. Background technique [0002] High-level radioactive nuclear waste (referred to as high-level radioactive waste) has strong radioactivity, high toxicity, heat generation, and extremely long half-life of nuclides. Reliable means must be adopted to effectively isolate it from the human living environment. Judging from the current development situation in the world, it has become an international consensus that deep geological burial (in geological bodies about 500-1000 meters deep from the surface) and isolation from the biosphere is considered to be an effective and safe disposal method. The safe disposal of high-level radioactive waste faces a series of major and complex pro...

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Problems solved by technology

[0004] The site screening and evaluation of the high-level radioactive waste geological repository in my country began in 1985. Six pre-selected areas, 21 key areas and 7 candidate sites were preliminarily screened across the country, but the site screening and evaluation work is still at a high level. The initial stage of research and development of radioactive waste geological disposal

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