| 矿震震动波速度层析成像评估冲击危险的验证 |
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| 引用本文： | 蔡武,窦林名,李振雷,巩思园,韩荣军,刘军.矿震震动波速度层析成像评估冲击危险的验证[J].地球物理学报,2016,59(1):252-262. |
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| 作者姓名： | 蔡武 窦林名 李振雷 巩思园 韩荣军 刘军 |
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| 作者单位： | 1. 中国矿业大学煤炭资源与安全开采国家重点实验室, 矿业工程学院, 徐州 221116;2. 河南大有能源股份有限公司, 河南义马 472300 |
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| 基金项目： | 中央高校基本科研业务费专项资金项目(2015XKZD04),中国博士后科学基金(2015M580494),江苏高校优势学科建设工程项目资助. |
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| 摘 要： | 矿震震动波速度层析成像,作为一种新的地球物理方法在冲击矿压危险评估领域具有广阔的应用前景,但截至目前,采用该技术评估冲击危险的现场应用研究还比较少,尤其是与传统监测手段的对比验证研究,还未见有相关文献报道.本文将层析成像技术和微震实时监测相结合,对河南义马跃进煤矿25110工作面回采过程中的P波速度进行了反演,并对比分析了该技术与传统监测手段之间的对应关系.研究结果表明,强矿震主要发生在高波速区或高波速变化梯度区;波速与数值模拟结果、钻屑量、钻孔应力值以及电磁辐射值之间存在正相关关系,且对应一致性较好,进而验证了矿震震动波速度层析成像技术评估冲击危险的可行性,同时也为进一步研究波速与应力或冲击危险的直接及定量关系提供参考.
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| 关 键 词： | 冲击矿压 矿震震动波速度层析成像 数值模拟 钻屑 钻孔应力 电磁辐射 |
| 收稿时间： | 2014-03-20 |
Verification of passive seismic velocity tomography in rock burst hazard assessment |
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| CAI Wu,DOU Lin-Ming,LI Zhen-Lei,GONG Si-Yuan,HAN Rong-Jun,LIU Jun.Verification of passive seismic velocity tomography in rock burst hazard assessment[J].Chinese Journal of Geophysics,2016,59(1):252-262. |
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| Authors: | CAI Wu DOU Lin-Ming LI Zhen-Lei GONG Si-Yuan HAN Rong-Jun LIU Jun |
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| Institution: | 1. State Key Laboratory of Coal Resources and Safe Mining, School of Mines, China University of Mining and Technology, Xuzhou 221116, China;2. Henan Dayou Energy Limited Company, Henan Yima 472300, China |
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| Abstract: | Passive seismic velocity tomography, as a new geophysical technique, has broad application prospects in rock burst hazard assessment. But it has been less applied in the field up to now, especially there is no literature reported regarding the comparison and verification with traditional methods. In this work, the velocity tomography of P waves was conducted using the combination of tomography and microseismic monitoring system during the mining process of long-wall panel 25110 in the Yima Yuejin coal mine, Henan Province, China. Moreover, the correspondences between the tomography technology and traditional methods were analyzed. The results show that strong seismic events mainly occur in zones with high velocity and/or high velocity gradients. There exist a relatively strong positive correlation between P-wave velocity and numerical simulation results, drilling pulverized coal parameters, borehole stress values, and electromagnetic emission values, which verifies the feasibility of rock burst hazard assessment through passive seismic velocity tomography. This study can provide a reference for further research on quantitative and direct relations between wave velocity and rock burst hazard or stress. |
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| Keywords: | Rock burst Passive seismic velocity tomography Numerical simulation Drilling pulverized coal parameters Borehole stress Electromagnetic emission |
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