【作者】 宗自华； 王驹； 苏锐； 郭永海； 徐健； 周佳；

【Author】 ZONG Zihua WANG Ju SU Rui GUO Yonghai XU Jian ZHOU Jia (Beijing Research Institute of Uraniun Geology, Beijing 100029, China)

【机构】 核工业北京地质研究院；

【摘要】 采用窗口统计法对甘肃北山旧井地段的BS03钻孔周围1km×1km裂隙露头进行测量,综合研究了裂隙几何特征。统计结果表明:研究区有四组裂隙比较发育;对于每组裂隙,产状符合Fisher分布,迹长服从对数正态分布,各组裂隙张开度成负指数分布;面密度P₂₀和P₂₁正相关,即P₂₁=1.36P₂₀。在此基础上,利用FracMan软件进行研究区3D裂隙网络模拟,分析了裂隙大小和裂隙密度（或数量）对核素迁移路径的影响。更多还原

【Abstract】 Fractures investigation of outcrops with the area of 1km×1km around borehole BS03 located at Jiujing section in Beishan area,Gansu province,has been conducted by using window statistic method. Fractures statistic characterization has been studied.It has been shown from the results of statistic that four sets of fractures are dominant in the studied area and orientation of each set is well fitted by Fisher distribution;Trace length of each set of fracture is fitted by log-normal distribution and distribution of fracture aperture is fitted by inverse exponent function.Fracture numbers in unit area,P₂₁has linear correlation with fracture length in unit area P₂₀,P₂₁=1.36P₂₀.Modeling of 3D fracture network in the studied area has been carried out by using the software Fracman.The analysis of influence of fracture trace length and intensity of fractures on migration pathway of nuclide has been done.更多还原