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《工程(英文)》 >> 2018年 第4卷 第5期 doi: 10.1016/j.eng.2018.08.004

矿山微震震源定位研究进展与展望

a State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China
b Laser Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
c School of Electrical and Electronic Engineering, Shijiazhuang Tiedao University, Shijiazhuang 050043, China

收稿日期: 2017-08-15 修回日期: 2017-09-01 录用日期: 2018-08-14 发布日期: 2018-08-23

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摘要

震源定位是微震监测技术的核心要素,微震震源定位的准确性关系到微震技术的应用效果。针对矿山微震波场特征,分析了矿山微震定位的特点,指出了基于到时的经典定位方法用于矿山微震定位存在的不足。介绍了近几年来在矿山微震定位方面的研究进展,主要包括Geiger 方法与线性方法联合定位、联合微震事件定位、相对定位法优化、无需预先测速的定位方法、无需拾取初至到时的定位方法,分析各方法的优缺点和可行条件。分析了检波器布置、初至到时拾取、波速模型对微震震源定位的影响,提出了应对措施。解决上述问题的方法包括采用新型融合、组合优化已有的方法、创建新方法以实现高精度微震震源定位。提出了矿山微震精确定位的发展方向,即速度模型优化、逆时成像、被动时间反转镜法、相对干涉成像法等新方法的应用,有望大大提高矿山微震震源定位精度。同时,探讨了多方法多参数信息融合和深度学习在矿山微震定位中的应用前景。这些创新性的微震震源定位方法具有广阔的发展前景。

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