煤岩动力灾害预测的微电流技术及其应用研究

doi:10.13722/j.cnki.jrme.2021.0749

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Abstract To explore a new method for coal and rock dynamic disaster prediction based on weak current technique，field tests of weak current of coal mass in front of the mining face of a mine with rock burst risk were carried out using a self-developed weak current measuring device. The spatial distribution laws of weak current of the surrounding coal of the roadway and the response laws of weak current of the coal mass in front of the working face in the mining process were obtained. Combined with the information of microseismic events monitored，the precursory characteristics of coal instability or failure based on weak current responses were determined，and the feasibility for using the weak current method to predict coal and rock dynamic disasters was verified. The results show that the distribution of weak current in surrounding coal mass is almost consistent with the stress distribution，showing a trend of “increase-decrease-stable” from the roadway side to the deep of coal mass. Weak current responses well to the advancing process of the working face，showing a stepped increasing trend. Specifically，weak current increases gradually in the mining period while fluctuates stably in the stopping period. In addition，weak current could response to mining tremors in advance，and the acceleration of the current can be used as the precursor of mining tremors or coal failures. The weak current method has a wide application prospect in underground engineering due to its advantages of strong anti-interference ability，sensitive response and advanced disaster warning. However，the weak current method is still in the experimental stage，and the technique still needs to be further verified and improved through more field tests so as to provide technical support for accurate prediction of coal and rock dynamic disasters.

Key words： rock mechanics weak current instability and failure mine tremor precursory information coal and rock dynamic disasters monitoring and early-warning

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	Articles by authors
	LI Dexing1
	2
	3
	WANG Enyuan1
	YUE Jianhua2
	ZHANG Xin1
	WANG Dongming1
	JU Yunqiang4

Cite this article:

LI Dexing1,2,3, et al. A weak current technique for coal and rock dynamic disaster prediction and its application[J]. , 2022, 41(4): 764-774.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0749 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I4/764

[1]	钱七虎. 依托中国的独特优势，加速迈向科技强国的伟大目标[J]. 科技导报，2020，38(10)：1-2.(QIAN Qihu. Relying on China's unique advantages to accelerate the great goal of becoming a powerful country in science and technology[J]. Science and Technology Review，2020，38(10)：1-2.(in Chinese))
[2]	谢和平. 深部岩体力学与开采理论研究进展[J]. 煤炭学报，2019，44(5)：1 283-1 305.(XIE Heping. Research review of the state key research development program of China：Deep rock mechanics and mining theory[J]. Journal of China Coal Society，2019，44(5)： 1 283-1 305.(in Chinese))
[3]	何满潮，谢和平，彭苏萍，等. 深部开采岩体力学研究[J]. 岩石力学与工程学报，2005，24(16)：2 803-2 813.(HE Manchao，XIE Heping，PENG Suping，et al. Study on rock mechanics in deep mining engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(16)：2 803-2 813.(in Chinese))
[4]	潘一山，李忠华，章梦涛. 我国冲击地压分布、类型、机制及防治研究[J]. 岩石力学与工程学报，2003，22(11)：1 844-1 851.(PAN Yishan，LI Zhonghua，ZHANG Mengtao，et al. Distribution，type，mechanism and prevention of rockbrust in China[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(11)：1 844-1 851.(in Chinese))
[5]	袁亮，姜耀东，何学秋，等. 煤矿典型动力灾害风险精准判识及监控预警关键技术研究进展[J]. 煤炭学报，2018，43(2)：306-318. (YUAN Liang，JIANG Yaodong，HE Xueqiu，et al. Research progress of precise risk accurate identification and monitoring early warning on typical dynamic disasters in coal mine[J]. Journal of China Coal Society，2018，43(2)：306-318.(in Chinese))
[6]	姜耀东，赵毅鑫. 我国煤矿冲击地压的研究现状：机制、预警与控制[J]. 岩石力学与工程学报，2015，34(11)：2 188-2 204.(JIANG Yaodong，ZHAO Yixin. State of the art：Investigation on mechanism，forecast and control of coal bumps in China[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(11)：2 188-2 204.(in Chinese))
[7]	GE M C. Efficient mine microseismic monitoring[J]. International Journal of Coal Geology，2005，64(1/2)：44-56.
[8]	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.(in Chinese))
[9]	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)：1 002-1 011.(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)：1 002-1 011.(in Chinese))
[10]	Cox S J D，MEREDITH P G. Microcrack formation and material softening in rock measured by monitoring acoustic emissions[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1993，30(1)：11-24.
[11]	曹树刚，刘延保，张立强. 突出煤体变形破坏声发射特征的综合分析[J]. 岩石力学与工程学报，2007，26(增1)：2 794-2 799.(CAO Shugang，LIU Yanbao，ZHANG Liqiang，et al. Study on characteristics of acoustic emission in outburst coal[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(Supp.1)：2 794-2 799.(in Chinese))
[12]	FRID V. Rockburst hazard forecast by electromagnetic radiation excited by rock fracture[J]. Rock Mechanics and Rock Engineering，1997，30(3)：229-236.
[13]	何学秋，刘明举. 含瓦斯煤岩破坏电磁动力学[M]. 徐州：中国矿业大学出版社，1995：15-38.(HE Xueqiu，LIU Mingju. Electromagnetic dynamics of coal and rock failure with gas[M]. Xuzhou：China University of Mining and Technology Press，1995：15-38.(in Chinese))
[14]	王恩元，何学秋，聂百胜，等. 电磁辐射法预测煤与瓦斯突出原理[J]. 中国矿业大学学报，2000，29(3)：225-229.(WANG Enyuan，HE Xueqiu，NIE Baisheng，et al. Principle of predicting coal and gas outburst using electromagnetic emission[J]. Journal of China University of Mining and Technology，2000，29(3)：225-229.(in Chinese))
[15]	王恩元，刘晓斐，何学秋，等. 煤岩动力灾害声电协同监测技术及预警应用[J]. 中国矿业大学学报，2018，47(5)：942-948.(WANG Enyuan，LIU Xiaofei，HE Xueqiu，et al. Acoustic emission and electromagnetic radiation synchronized monitoring technology and early-warning application for coal and rock dynamic disaster[J]. Journal of China University of Mining and Technology，2018，47(5)：942-948.(in Chinese))
[16]	李忠辉. 受载煤体变形破裂表面电位效应及其机制的研究[博士学位论文][D]. 徐州：中国矿业大学，2007.(LI Zhonghui. Study on surface potential effect and its mechanism of coal during deformation and fracture under load[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2007.(in Chinese))
[17]	LI Z H，NIU Y，WANG E Y，et al. Study on electrical potential inversion imaging of abnormal stress in mining coal seam[J]. Environmental Earth Sciences，2019，78：225.
[18]	钮月. 含瓦斯煤损伤破坏电位响应时空演化规律研究[博士学位论文][D]. 徐州：中国矿业大学，2020.(NIU Yue. Study on temporal and spatial evolution law of electric potential response of damage and failure of gas-bearing coal[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2020.(in Chinese))
[19]	潘一山，罗浩，赵扬锋. 电荷感应监测技术在矿山动力灾害中的应用[J]. 煤炭科学技术，2013，41(9)：29-33.(PAN Yishan，LUO Hao，ZHAO Yangfeng. Application of charge induction monitoring technology of mine dynamic disasters[J]. Coal Science and Technology，2013，41(9)：29-33.(in Chinese))
[20]	潘一山，赵扬锋，李国臻. 冲击地压预测的电荷感应技术及其应用[J]. 岩石力学与工程学报，2012，31(增2)：3 988-3 993.(PAN Yishan，ZHAO Yangfeng，LI Guozhen. Charge-induced technique of rockburst prediction and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.2)：3 988-3 993.(in Chinese))
[21]	赵扬锋，刘力强，潘一山，等. 岩石变形破裂微震、电荷感应、自电位和声发射实验研究[J]. 岩石力学与工程学报，2017，36(1)：107-123.(ZHAO Yangfeng，LIU Liqiang，PAN Yishan，et al. Experiment study on microseismic，charge induction，self-potential and acoustic emission during fracture process of rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(1)：107-123.(in Chinese))
[22]	王书文，徐圣集，蓝航，等. 地震CT技术在采煤工作面的应用研究[J]. 煤炭科学技术，2012，40(7)：24-27.(WANG Shuwen，XU Shengji，LAN Hang，et al. Study on seismic CT technology applied to coal mining face[J]. Coal Science and Technology，2012，40(7)：24-27.(in Chinese))
[23]	刘少虹，潘俊锋，王洪涛，等. 基于冲击启动过程的近场围岩冲击危险性电磁波CT评估方法[J]. 煤炭学报，2019，44(2)：384-396.(LIU Shaohong，PAN Junfeng，WANG Hongtao，et al. Electromagnetic wave CT evaluation method for rock burst hazard in near field based on rock burst start-up process[J]. Journal of China Coal Society，2019，44(2)：384-396.(in Chinese))
[24]	STAVRAKAS I，ANASTASIADIS C，TRIANTIS D，et al. Piezo stimulated currents in marble samples：Precursory and concurrent-with- failure signals[J]. Natural Hazards and Earth System Sciences，2003，3(3/4)：243-247.
[25]	FREUND F T，TAKEUCHI A，LAU B W. Electric currents streaming out of stressed igneous rocks-a step towards understanding pre-earthquake low frequency EM emissions[J]. Physics and Chemistry of the Earth，2006，31(4/9)：389-396.
[26]	TRIANTIS D，STAVRAKAS I，KYRIAZOPOULOS A，et al. Pressure stimulated electrical emissions from cement mortar used as failure predictors[J]. International Journal of Fracture，2012，175(1)：53-61.
[27]	STAVRAKAS I，TRIANTIS D，AGIOUTANTIS Z，et al. Pressure stimulated currents in rocks and their correlation with mechanical properties[J]. Natural Hazards and Earth System Sciences，2004，4(4)：563-567.
[28]	ANASTASIADIS C，TRIANTIS D，STAVRAKAS I. Pressure stimulated currents(PSC) in marble samples after the application of various stress modes before fracture[J]. Annals of Geophysics，2004，47(1)：21-28.
[29]	FREUND F T. Pre-earthquake signals：underlying physical processes[J]. Journal of Asian Earth Sciences，2011，41(4/5)：383-400.
[30]	SALTAS V，FITILIS I，VALLIANATOS F. A combined complex electrical impedance and acoustic emission study in limestone samples under uniaxial loading[J]. Tectonophysics，2014，637：198-206.
[31]	SCOVILLE J，SORNETTE J，FREUND F T. Paradox of peroxy defects and positive holes in rocks Part II：Outflow of electric currents from stressed rocks[J]. Journal of Asian Earth Sciences，2015，114(Supp.1)：338-351.
[32]	LI M，WANG H T，WANG D M，et al. Experimental study on characteristics of surface potential and current induced by stress on coal mine sandstone roof[J]. Engineering Geology，2020，266：105468.
[33]	LI D X，WANG E Y，LI Z H，et al. Experimental investigations of pressure stimulated currents from stressed sandstone used as precursors to rock fracture. International Journal of Rock Mechanics and Mining Sciences，2021，145：104841.
[34]	何淼，李忠辉，刘杰，等. 单轴压缩下煤体表面微电流试验研究[J]. 煤炭学报，2013，38(6)：966-969.(HE Miao，LI Zhonghui，LIU Jie，et al. Experimental study on surface current of coal under uniaxial compression[J]. Journal of China Coal Society，2013，38(6)：966-969.(in Chinese))
[35]	LI Z H，WANG E Y，HE M. Laboratory studies of electric current generated during fracture of coal and rock in rock burst coal mine[J]. Journal of Mining，2015：235636.
[36]	LI D X，WANG E Y，JU Y Q，et al. Laboratory investigations of a new method using pressure stimulated currents to monitor concentrated stress variations in coal. Natural Resources Research，2021，30：707-724.
[37]	李德行. 受载煤体损伤过程微电流效应及其机制研究[博士学位论文][D]. 徐州：中国矿业大学，2021.(LI Dexing. Study on the weak current effect and its mechanism of stressed coal during damage[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2021.(in Chinese)