地质处置EDZ的演化过程研究

摘要

中国拟采用地质处置的方式处理高放废物.高放废物处置库采用"多重屏障"单元概念设计,此处置方案实施过程中不可避免地对于处置岩层产生了扰动或损伤.该区域作为工程屏障的一部分,对处置库安全评价具有重要意义.通过对国际上EDZ研究工作的调研,归纳了EDZ演化工程以及模拟工作,提出了EDZ研究过程中需要关注的方面.EDZ研究需要关注EDZ的结构和水流的各向异性特征,EDZ密封有效性以及密封材料与围岩界面反应机理以及EDZ的综合评价方法.%The final option for high level waste management in china is geological disposal,which adopts the concept design of "multi-barriers" unit.During the complement of construction,the excavation damaged(disturbed) zone should be caused by excavation method and other condition changes,such as stress redistribution and temperature,therefor study on EDZ behavior properties have significant meanings on safety assessment of repertory site and design.Through investigation of EDZ study content,technical comments and key issues that need researched is as follow:features of structure and water flow in EDZ,effectiveness of EDZ sealing and mechanism of interface reaction between sealing material and surrounding rock,comprehensive evaluation method of EDZ.