采动裂隙网络重构分形特征参数敏感性分析  

The parameters sensibility analysis of mining-induced fracture network reconstructed on the fractal characteristics

作　　者：谢晶[1] 高明忠[1] 张茹[1] 金文城[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室水利水电学院,四川成都610065

出　　处：《中国矿业大学学报》2016年第4期677-683,共7页Journal of China University of Mining & Technology

基　　金：国家自然科学基金项目(51204112)

摘　　要：基于离散裂隙网络重构技术,借助RJNS^(3D)三维裂隙网络重构平台,探讨了采动裂隙网络重构参数的敏感性.研究结果表明:离散裂隙网络重构次数对裂隙分形特征存在略微影响,可忽略不计;裂隙类型和体积密度对裂隙分形特征存在一定敏感性,裂隙分维随着裂隙轴比的增加而减小,随着体积密度的增加而增加;测窗产状对裂隙分形特征存在一定敏感性,裂隙分维随着测窗产状与裂隙平均产状的夹角的增加有一定增长趋势;不同测窗尺寸下裂隙分维存在差异性,体积分维随着测芯尺寸的增大有明显增大趋势.Based on the reconstruction technology of discrete fracture network and the reconstruction platform of RJNS^3D, the sensibility of the reconstruction parameters for fracture net- work was discussed. The results show that the reconstruction times have a slight influence on fractal dimension, which can be neglected; the fracture type and volumetric density have a certain sensitivity effect on the fractal dimension, the fractal dimension decreases with the increase of the fracture axial ratio, while it increases with the increase of fracture density; the attitude of the measuring window has a certain sensitivity effect on the fractal dimension as well, the fractal dimension increases with the increase of the angle between measuring window and the average fracture attitude; the fractal dimensions differ under different measuring window sizes, the volumetric fractal dimension obviously increase with the increase of the core box size.

关 键 词：裂隙网络重构 RJNS^3D 裂隙分维 敏感性分析 测窗(测芯) 

分 类 号：TD313.5[矿业工程—矿井建设]