After that,the authors take Beishan of Gansu province for the HLW disposal area as the example,and measure the joint roughness coefficient(JRC) of surface rock mass and cores of borehole.

• 文章评述了现有岩体结构面粗糙度系数(JRC)的各种测定方法及存在的问题,分析了在高放废物处置库预选场址甘肃北山花岗岩地区,用"简易纵剖面仪"进行地表岩体及钻孔岩心裂隙结构面JRC的测量结果。