某中低放废物处置场岩体裂隙统计分析及渗透系数张量的确定  

Statistical analysis of fractures and determination of hydraulic permeability tensor of fractured rock at a certain low-medium radioactive waste disposal site

作　　者：袁革新[1] 赵振华[1,2] 陈剑杰[1] 褚玉成[1] 

机构地区：[1]西北核技术研究所,西安710024 [2]南京大学地球科学与工程学院,南京210093

出　　处：《工程勘察》2011年第8期42-46,64,共6页Geotechnical Investigation & Surveying

摘　　要：为了解西北某中低放废物处置场裂隙岩体的渗透性及其优势方向,对裂隙几何参数进行了统计分析,划分出优势裂隙组,再通过概率分析,取得优势裂隙的几何参数,并将其代入渗透张量计算程序中进行计算,得到岩体的渗透张量计算值;最后对渗透张量计算值进行分析,并根据前期抽水试验得到的渗透系数对裂隙岩体渗透张量进行修正,取得合理有效的渗透系数张量主值和渗透主方向。In order to know the permeability of fractured rock and dominant strike of fractures at a certain low-medium radioactive waste disposal site,the statistical analysis of fracture＇s geometrical parameters are accomplished.Based on this,the dominant attitudes of fractures are determined.Then,the dominant geometrical parameters are obtained by the probable analysis.According to the geometrical parameters,permeability tensor can be calculated with a specially developed computer program.Finally,by analyzing the permeability tensor and modifying the result with the data of previous nearby well hydrological test,the reasonable permeability tensor and dominant orientation are determined.

关 键 词：裂隙 统计分析 渗透张量 修正系数 

分 类 号：P641.2[天文地球—地质矿产勘探] P628.1[天文地球—地质学]