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| 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) |
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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 method can be achieved.
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Received: 29 September 2009
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LI Botao1, 2, 3, TAN Yuxuan1, LIN Haifei4, 5*, WEI Jianping1, 2, 3, ZHANG Hongtu1, 2, 3, LI Shugang4, 5, WEI Zongyong4, 5, WANG Pei4, LUO Rongwei4, LIU Yanwei1, 2, 3. Mechanical properties and mesoscopic damage evolution of coal under liquid-nitrogen freezing at different initial temperatures[J]. , 2026, 45(6): 1757-1772. |
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