Firstly , according to the observed data in - situ ( or the empirical parameter data ) and the acoustic logging data , the distribution law of the joint in the computing area can be got . then the network system of the joint can be simulated by the statistical distribution theory and the monte carlo ' s method . and then artificial or automatic dissection program can be used to dissect the fem mesh 首先,根据现场实测资料(或相关经验资料)和钻孔声波资料,求出计算区域的节理裂隙的分布规律,由统计分布理论结合蒙特卡洛方法可模拟出计算区域的节理裂隙网络系统,利用人工或自动生成剖分程序剖分成有限元网格。