【作者】 王驹； 郭永海； 陈伟明； 苏锐； 金远新； 杨春和； 程纪星； 宗自华； 王烽； 季瑞利； 徐健； 赵宏刚； 王贵宾；

【Author】 Wang Ju;Guo Yong-hai;Chen Wei-ming;Su Rui;Jin Yuan-xin;Yang Chun-he;Cheng Ji-xing;Zong Zi-hua;Wang Feng;Ji Rui-li;Xu Jian;Zhao Hong-gang;Wang Gui-bin;Beijing Research Institute of Uranium Geology;Institute of Rock and Soil Mechanics,Chinese Academy of Sciences;China Earthquake Administration;

【机构】 核工业北京地质研究院； 中国科学院武汉岩土力学研究所； 中国地震局；

【摘要】 以甘肃北山地区花岗岩低渗透裂隙介质为实验对象,针对高放废物地质处置花岗岩场址评价的特殊要求,利用北山场址及北山深钻孔,开展综合场址特征评价方法学研究,包括:钻孔施工方法研究、水文地质参数现场测试技术方法研究、深部地下水取样技术研究、水文地球化学测井方法研究、钻孔地应力测量方法研究、岩体声波测试方法研究、声波钻孔电视测量方法研究、钻孔雷达测试方法研究、断裂稳定性评价方法研究和岩体节理研究。通过研究,建立了"高放废物地质处置花岗岩场址特性评价技术集成系统",解决了高放废物处置库花岗岩场址评价中的8大关键技术,即:对深部地质环境扰动最小的钻进技术;非均质、各向异性、低渗透性裂隙介质中水文地质特征参数测量技术;低渗透裂隙岩体中小流量定深地下水取样技术和原状地下水识别技术;深部裂隙的钻孔电视和钻孔雷达综合测量和数据处理技术;水文地球化学测井技术;深部岩体渗透率测量关键技术;岩体质量评价的地球物理测量技术;岩体节理几何-机理的建模和模拟技术。通过上述关键技术的综合运用,将可以获得关于花岗岩场址特征的系统性参数。通过这些方法的运用,获得了北山地质特征参数、水文地质参数、地球化学参数、深部地质环境参数和地壳应力参数等一系列场址评价所需的关键参数,为评价我国高放废物处置库预选场址的适宜性奠定了方法学基础。更多还原

【Abstract】 This paper reflects the final achievement of the project "Studies on Site Characterization Methodologies for High Level Radioactive Waste Disposal",which is supported by the China Atomic EnergyAuthority during 2001-2005.The study area is Beishan area,Gansu Province,NW China—the most potential site for China’s underground research laboratory and high level radioactive waste repository.The boreholes BS01,BS02,BS03 and BS04 drilled in fractured granite media in Beishan are used to conduct comprehensive studies on site characterization methodologies,including:bore hole drilling method,insitu hydrogeological parameter measurement methods,underground water sampling technology,hydrogeochemical logging method,geo-stress measurement method,acoustic borehole televiewer measurement method,borehole radar measurement method,fault stability evaluation methods and rock joint evaluation method.The execution of the project has resulted in the establishment of an "Integrated Methodological System for Site Characterization in Granite Site for High Level Radioactive Waste disposal "and the 8 key methodologies for site characterization:bore hole drilling method with minimum disturbance to rock mass,measurement method for hydrogeological parameters of fracture granite mass,in-situ groundwater sampling methods from bore holes in fractured granite mass,fracture measurement methods by borehole televiewer and bore radar system,hydrogeochemical logging,low permeability measurement methods,geophysical methods for rock mass evaluation,modeling methods for rock joints.The comprehensive utilization of those methods in granite mass " will help to obtain systematic parameters of granite mass,which are essential to evaluate the suitability of a granite site.Through the utilization of those methods in Beishan site,the deep geological,hydrogeological,geochemical parameters and geostress parameters have been obtained,which provides sound methodological basis for site characterization for high level radioactive waste disposal.更多还原