节理测量中迹长误差的计算机模拟分析

Computer Analog Analysis of the Trace Length Error in Joint Surveys

针对节理测量中迹长测量误差难以确定的问题，在三维节理岩体模型的基础上，利用计算机模拟了测线测量的整个过程，并将测线测出的迹长分布形式与实际节理长度分布形式做了比较，得出了迹长误差的形式。模拟结果表明，当实际节理长度分布为负指数和对数正态分布时，其测线测量出来的节理迹长分布分别为对数正态分布和正态分布。

In view of the difficulty in determining the trace length error in joint surveys,the whole process of the scanline survey was computer simulated on the basis of a three dimensional joint rock mass model and the distribution form of the trace length of the scanline survey and that of the real joint length were compared so as to obtain the form of the trace length error.The simulation results have shown that when the real joint length distribution is of negative exponent form or of lognormal form,the distribution of the joint trace length of the scanline survey will be of lognormal or normal form.