针对山西某矿盘区大巷受应力集中影响处于高应力状态,巷道支护困难,多次出现片帮、底鼓、U 型钢支架被推倒等动压现象,受到冲击地压威胁,将微地震监测技术应用于该大巷对其顶板岩层破断情况进行监测,共安装2 台分站和18 个测点,以实现对该区域内冲击地压灾害进行监测预警。2014 年2 月1 日至3 月16 日的监测结果表明,监测区域内每日微震事件发生0~4次,事件能量较小,微震事件集中在2 个区域,与现场采掘活动密切相关,因此应加强微震事件密集区的监控,如果出现异常应立即采取停产卸压等应对措施。
The panel roadway in a coal mine in Shanxi province was in high stress state by the influence of stress concentration with dynamic pressure phenomena appearing, such as supporting difficulty, spalling, floor heaving, U-steel support pushed and threatened by burst. Microseismic monitoring technology was used for monitoring the roadway roof strata breaking. Two sets of sub-stations and 18 measuring points were installed to monitor and warning the burst disasters. Monitoring results showed that microseismic events occurred 0-4 times per day in the monitoring area with less energy. The microseismic events were concentrated in two areas, and were closely related to the extractive activities. More attention should be taken to these areas, monitoring of densely populated areas with microseismic events should be strengthened, and measures should be taken immediately to cope with abnormal events.
[1] 窦林名, 何学秋. 冲击矿压防治理论与技术[M]. 徐州: 中国矿业大学出版社, 2001. Dou Linming, He Xueqiu. Theory and technology of rock burst prevention[M]. Xuzhou: China University of Mining and Technology Press, 2001.
[2] 齐庆新, 窦林名. 冲击矿压理论与技术[M]. 徐州: 中国矿业大学出版社, 2008. Qi Qingxin, Dou Linming. Theory and technology of rock burst[M]. Xuzhou: China University of Mining and Technology Press, 2008.
[3] 姜耀东, 赵毅鑫, 刘文岗, 等. 煤岩冲击动力失稳的机制和实验研究[M]. 北京: 科学出版社, 2009. Jiang Yaodong, Zhao Yixin, Liu Wengang, et al. Investigation on the mechanism of coal bumps and relating experiments[M]. Beijing: Science Press, 2009.
[4] 姜耀东, 赵毅鑫, 何满潮, 等. 冲击地压机制的细观实验研究[J]. 岩石力学与工程学报, 2007, 26(5): 901-907. Jiang Yaodong, Zhao Yixin, He Manchao, et al. Investigation on mechanism of coal mine bumps based on microscopic experiments[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(5): 901- 907.
[5] 潘一山, 赵扬锋, 官福海, 等. 矿震监测定位系统的研究及应用[J]. 岩石力学与工程学报, 2007, 26(5): 1002-1011. Pan Yishan, Zhao Yangfeng, Guan Fuhai, et al. Study on rockburst monitoring and orientation system and its application[J]. Chinese Journal of Rock Mechanics and Engineering, 2007, 26(5): 1002-1011.
[6] 夏永学, 潘俊锋, 王元杰, 等. 基于高精度微震监测的煤岩破裂与应力分布特征研究[J]. 煤炭学报, 2011, 36(2): 239-243. Xia Yongxue, Pan Junfeng, Wang Yuanjie, et al. Study of rule of surrounding rock failure and stress distribution based on high precision microseismic monitoring[J]. Journal of China Coal Society, 2011, 36(2): 239-243.
[7] 曲效成, 姜福兴, 于正兴, 等. 基于当量钻屑法的冲击地压监测预警技术研究及应用[J]. 岩石力学与工程学报, 2011, 30(11): 2343-2351. Qu Xiaocheng, Jiang Fuxing, Yu Zhengxing, et al. Rock burst monitoring and precaution technology based on equivalent drilling research and its applications[J]. Chinese Journal of Rock Mechanics and Engineering, 2011, 30(11): 2343-2351.
[8] 姜福兴, 杨淑华, 成云海, 等. 煤矿冲击地压的微地震监测研究[J]. 地球物理学报, 2006, 49(5): 1511-1516. Jiang Fuxing, Yang Shuhua, Cheng Yunhai, et al. A study on microseismic monitoring of rock burst in coal mine[J]. Chinese Journal of Geophysics, 2006, 49(5): 1511-1516.
[9] 姜福兴, 王存文, 杨淑华, 等. 冲击地压及煤与瓦斯突出和透水的微震监测技术[J]. 煤炭科学技术, 2007, 35(1): 26-28. Jiang Fuxing, Wang Cunwen, Yang Shuhua, et al. Microseismic monitoring and measuring technology for pumping pressure, coal and gas outburst and water inrush[J]. Coal Science and Technology, 2007, 35(1): 26-28.
[10] 成云海, 姜福兴. 冲击地压矿井微地震监测试验与治理技术研究[M]. 北京: 煤炭工业出版社, 2011. Cheng Yunhai, Jiang Fuxing. Rockbrust microseismic monitoring test and control technology in coal mine[M]. Beijing: China Coal Industry Press, 2011.
