煤岩双剪摩擦滑动声电响应实验研究
Experimental study on acoustic and electrical response of double shear friction sliding of coal and rock
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摘要: 井下开采过程中常伴有煤体摩擦现象。大尺度煤岩体摩擦滑动引发的煤岩动力灾害会带来巨大的经济损失和人员伤亡。以宽沟煤样为实验对象，利用摩擦装置进行了不同加载速率（0．1、0．2、0．3、0．4 mm/ｓ）条件下的煤样摩擦实验，得出了试样在不同加载速率下声发射和电磁辐射的信号特征。研究表明：试样受载滑动过程中伴随有明显的声发射电磁辐射信号产生，且声电信号随加载呈周期变化，声电信号强度随载荷降出现而出现，随载荷降的幅值的增加而增大，两者之间在时序上具有一定的协同性；累计声电能量计数变化与试样摩擦破坏程度正相关，基于累计声电能量计数指标可实现试样摩擦启动和结束的判断预警。Abstract: In the process of underground mining, coal body friction is often accompanied. The coal-rock dynamic disaster caused by the friction and sliding of large-scale coal-rock mass will bring huge economic losses and casualties. Based on this, this paper takes Kuangou coal samples as the experimental object, and uses the friction device to carry out the coal sample friction experiments under the conditions of different loading rates（0.1, 0.2, 0.3, 0.4 mm/s）, and obtain signal characteristics of acoustic emission and electromagnetic radiation at loading rates. The research shows that the sample is accompanied by obvious acoustic emission electromagnetic radiation signal in the process of sliding under loading, and the acoustoelectric signal changes periodically with the loading. The intensity of acoustic signal appears with the occurrence of load drop, and increases with the increase of load drop amplitude. There is a certain synergy between the two in time sequence; the change of the cumulative acoustic energy count is positively correlated with the degree of friction damage of the sample. Based on the cumulative acoustic energy count index, the judgment and early warning of the start and end of the friction of the sample can be realized.
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[1] 何学秋，窦林名，牟宗龙，等．煤岩冲击动力灾害连续监测预警理论与技术[J]煤炭学报，2014，39（8）：1485－1491. HE Xueqiu, DOU Linming, MOU Zonglong, et al. Continuous monitoring and warning theory and technology of rock burst dynamic disaster of coal[J]. Journal of China Coal Society, 2014, 39（8）: 1485-1491.
[2] 谢和平，高峰，鞠杨，等．深部开采的定量界定与分析[J]．煤炭学报，2015，40（1）：1－10. XIE Heping, GAO Feng, JU Yang, et al. Quantitative definition and investigation of deep mining[J]. Journal of China Coal Society, 2015, 40（1）: 1-10.
[3] 姜耀东，潘一山，姜福兴，等．我国煤炭开采中的冲击地压机理和防治[J]．煤炭学报，2014，39（2）：205－213. JIANG Yaodong, PAN Yishan, JIANG Fuxing, et al. State of the art review on mechanism and prevention of coal bumps in China[J]. Journal of China Coal Society, 2014, 39（2）: 205-213.
[4] 兰世瑞，宋大钊，李振雷，等．基于损伤因子的断层滑移过程声发射特征试验研究[J]．采矿与岩层控制工程学报，2021，3（3）：78-86. LAN Shirui, SONG Dazhao, LI Zhenlei, et al. Experimental study on acoustic emission characteristics of fault slip process based on damage factor[J]. Journal of Mining and Strata Control Engineering, 2021, 3（3）: 78 -86.
[5] 李利萍，潘一山．深部煤岩超低摩擦效应能量特征试验研究[J]．煤炭学报，2020，45（Ｓ1）：202－210. LI Liping, PAN Yishan. Experimental research on energy characteristics of anomalously low friction effect in deep coal and rock mass[J]. Journal of China Coal Society, 2020, 45（Ｓ1）: 202-210.
[6] 赫飞，唐治，冯瑞，等．煤岩电信号影响因素分析[J]．安全与环境学报，2014，14（5）：106－110. HE Fei, TANG Zhi, FENG Rui, et al. Influential factors for analyzing rock electrical signals[J]. Journal of Safety and Environment, 2014, 14（5）: 106-110.
[7] 姜耀东，王涛，宋义敏，等．煤岩组合结构失稳滑动过程的实验研究[J]．煤炭学报，2013，38（2）：177－182. JIANG Yaodong, WANG Tao, SONG Yimin, et al. Experimental study on the stick-slip process of coal-rock composite samples[J]. Journal of China Coal Society, 2013, 38（2）: 177-182.
[8] 齐庆新，高作志，王升．层状煤岩体结构破坏的冲击矿压理论[J]．煤矿开采，1998，3（2）：14－17. QI Qingxin, GAO Zuozhi, WANG Sheng. The theory of rockburst led by structure failure of bedded coal rock mass[J]. Coal Mining Technology, 1998, 3（2）: 14-17.
[9] 杨玉龙，李忠辉，王恩元，等．煤岩摩擦过程表面电位特征规律实验研究[J]．煤炭学报，2013，38（2）：215-220. YANG Yulong, LI Zhonghui, WANG Enyuan, et al. Experiment study on surface potential characteristics and rules during coal or rock friction process[J]. Journal of China Coal Society, 2013, 38（2）: 215-220.
[10] 来兴平，吕兆海，张勇，等．不同加载模式下煤样损伤与变形声发射特征对比分析[J]．岩石力学与工程学报，2008，27（Ｓ2）：3521－3527. LAI Xingping, LYU Zhaohai, ZHANG Yong, et al. Com-parative analysis of acoustics emission characteristics on damage and deformation of coal samples under different loading modes[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27（Ｓ2）: 3521-3527.
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