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放射性废物的处置已成为制约核能可持续发展的关键因素。地下水流场的研究对低、中放射性废物处置场的场址选择、环境影响评价、工艺方案、工程建设和运营维护等都有很强的指导意义。采用数值方法,建立低、中放射性废物处置场地下水数值模型,利用地下水长期观测资料对模型进行识别、校正,并利用校正后的模型分析处置场场平后的地下水流场。计算结果表明,场平单元覆盖后,沟谷被填埋,地下水流主方向逐渐以由东向西为主,同时水力坡度发生较大变化,场平单元覆盖后的流场总体水力坡度变缓。
Disposal of radioactive waste has become a key constraint to the sustainable development of nuclear energy. The study of groundwater flow field has a strong guiding significance for site selection, environmental impact assessment, process plan, project construction and operation and maintenance of low and medium radioactive waste disposal sites. The numerical model was established to establish the numerical model of groundwater disposal in low and medium radioactive waste disposal sites. The long-term groundwater observation data were used to identify and correct the model. The groundwater flow field after the disposal of the field was analyzed by the corrected model. The calculation results show that after the field units are covered, the valleys are buried and the main direction of groundwater flow gradually changes from east to west. At the same time, the hydraulic grade changes greatly, and the overall hydraulic slope of the flow field covered by the field flat units becomes slow.