基于不同初值的微震源定位方法-岩石力学与工程学报.PDF

第 29 卷 第 5 期 岩石力学与工程学报 Vol.29 No.5 2010 年 5 月 Chinese Journal of Rock Mechanics and Engineering May ，2010 基于不同初值的微震源定位方法 林 峰，李庶林，薛云亮，徐宏斌 (厦门大学 建筑与土木工程学院，福建 厦门 361005) 摘要：分析微震源定位方法中的线性定位方法和 Geiger 定位方法以及各自特点，并提出线性定位方法和 Geiger 定位方法相结合的联合定位方法。以柿竹园全数字多通道微震监测系统为背景，通过进行人工定点爆破试验，分 别采用线性定位方法、常规 Geiger 定位方法及联合定位方法对震源进行定位。通过与实际爆破坐标进行对比分析 得出，联合定位方法解决线性定位求解精度低的问题；同时优化常规 Geiger 定位方法初值选择，提高迭代求解效 率，避免当 Geiger 定位方法求解出现奇异矩阵时，迭代初值不准确造成定位误差较大甚至无法定位等问题。 关键词：采矿工程；Geiger 定位方法；线性定位；初值；微震 中图分类号：TD 76 文献标识码：A 文章编号：1000 –6915(2010)05 –0996 –07 MICROSEISMIC SOURCES LOCATION METHODS BASED ON DIFFERENT INITIAL VALUES LIN Feng ，LI Shulin ，XUE Yunliang ，XU Hongbin (School of Architecture and Civil Engineering ，Xiamen University ，Xiamen ，Fujian 361005，China) Abstract ：The characteristics of the linear location and the Geigers location method are analyzed；and a new location method by combining the two location methods is given. With the multi-channel digital microseismic monitoring system in Shizhuyuan mine ，the blasting with three location methods is proposed ；and the results by making a blasting test at the assigned location are compared. Some conclusions are drawn as follows：the combination of the linear location and the Geigers location method can solve the problem of low accuracy for the linear location ；and the choice of initial value for the conventional Geigers location method can be optimized. In addition，the efficiency of the iterative solution can be improved ；and the singular result with an inaccurate initial location value when singular matrix happens in the locating process with the Geigers m