基于微震监测关键层破断诱发冲击地压的物理相似材料模拟实验研究

doi:10.13722/j.cnki.jrme.2018.1423

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摘要为研究冲击倾向性顶板破断及其能量释放规律，采用物理模拟材料模拟实验，结合微震监测仪器、压力传感器，研究实体煤和采空区下回采工作面微震事件的分布特征及其与矿压分布规律之间的关系，分析矿压对煤岩体能量积聚与释放的影响，揭示关键层破断诱冲机制。研究表明：实体煤下微震事件主要发生在工作面前方顶板岩层中，微震事件能量释放值高于采空区下；采空区下微震事件主要发生在工作面后方顶板岩层中，微震事件发生的频次高于实体煤下回采。依据相似定理推导了能量相似比公式，定义物理相似材料模型中覆岩垮落发生大事件的能量值为333.33 J，发现大事件多发生在应力增高区“倒梯形”结构附近。随着工作面距离开切巷距离的缩短，微震事件能量积聚与释放周期随之减小。关键层破断诱发冲击地压时，主关键层积聚弹性能为冲击地压显现提供能量，冲击地压显现的位置一般处在受采动影响的应力增高区。为此，提出控制源头、降低应力集中、降低应力传导效率的控制策略，工程实践效果监测表明工作面顶板得到了有效控制，保障了安全生产。

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	崔峰1
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	杨彦斌1
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	来兴平1
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	曹建涛1
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关键词 ：采矿工程, 冲击地压, 相似模拟, 关键层, 微震, 大能量事件

Abstract：In order to study the breakage and energy release regularity of impact tendency roofs，physical similar material simulation experiment was carried out，and the distribution characteristics of microseismic events under the solid coal and the goaf and the relationship between microseismic events and the rock pressure were studied combined with microseismic monitoring instruments and pressure sensors. The influence of the rock pressure on energy accumulation and release of coal and rock mass was analyzed，and the mechanism of rockbursts induced by breakage of the key strata was revealed. The results show that the microseismic events under the solid coal mainly occur in the roof strata in front of the working face and that the energy release value of microseismic events under the solid coal is higher than that under the goaf. The microseismic events under the goaf mainly occur in the roof strata behind the working face，and the frequency of the microseismic events is higher than that under the solid coal. Based on the similarity theorem，the formula of the energy similarity ratio was deduced，and the energy value of large events in the physical similar material model was defined as 333.33 J. It was found that large events mostly occur near the inverted trapezoidal structure in the stress increasing area. With shortening the distance between the working face and the open-cut roadway，the period of energy accumulation and release of microseismic events decreases. When rockburst is induced by breakage of the key stratum，the elastic energy accumulated in the main key stratum provides energy for rockburst. The location of rockburst is generally in the stress increasing area affected by mining. The control strategies of controlling source，reducing stress concentration and conduction efficiency were put forward. The engineering monitoring results show that the roof of the working face is effectively controlled and safety production is guaranteed.

Key words： mining engineering rock burst similar simulation key stratum microseism large energy event

引用本文:

崔峰1，2，杨彦斌1，2，来兴平1，2，曹建涛1，2. 基于微震监测关键层破断诱发冲击地压的物理相似材料模拟实验研究[J]. 岩石力学与工程学报, 2019, 38(4): 803-814.
CUI Feng1，2，YANG Yanbin1，2，LAI Xingping1，2，CAO Jiantao1，2. Similar material simulation experimental study on rockbursts induced by key stratum breaking based on microseismic monitoring#br#. , 2019, 38(4): 803-814.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2018.1423 或 http://www.rockmech.org/CN/Y2019/V38/I4/803

[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，2001：1-15.(DOU Linming，HE Xueqiu. Theory and technique of rockburst prevention[M]. Xuzhou：China University of Mining and Technology Press，2001：1-15.(in Chinese))
[2]	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.(in Chinese))
[9]	窦林名，贺虎. 煤矿覆岩空间结构OX-F-T演化规律研究[J]. 岩石力学与工程学报，2012，31(3)：453-460.(DOU Linming，HE Hu. Study of OX-F-T spatial structure evolution of overlying Strata in coal mines.[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(3)：453-460.(in Chinese))
[11]	陆菜平，窦林名，吴兴荣，等. 煤岩冲击前兆微震频谱演变规律的试验与实证研究[J]. 岩石力学与工程学报，2008，27(3)：519-525.(LU Caiping，DOU Linming，WU Xingrong，et a1. Experimental and empirical research on frequency-spectrum evolvement rule of rock burst precursory microseismic signals of coal-rock[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(3)：519-525.(in Chinese))
[19]	蒋金泉，张培鹏，秦广鹏，等. 高位主关键层破断失稳及微震活动分析[J]. 岩土力学，2015，36(12)：3 567-3 575.(JIANG Jinquan，ZHANG Peipeng，QIN Guangpeng，et al. Analysis of destabilized fracture and microseismic activity of high-located main key strata[J]. Rock and Soil Mechanics，2015，36(12)：3 567-3 575.(in Chinese))
[4]	窦林名，何学秋. 采矿地球物理学[M]. 北京：科学文化出版社，2002：40-42.(DOU Linming，HE xueqiu. Mining geophysics[M]. Beijing：China Science Press，2002：40-42.(in Chinese))
[5]	姜福兴，XUN L. 微震监测技术在矿井岩层破裂监测中的应用[J]. 岩土工程学报，2002，24(2)：147-149.(JIANG Fuxing，XUN L. Application of microseismic monitoring technology of strata fracturing in underground coal mine[J]. Chinese Journal of Geotechnical Engineering，2002，24(2)：147-149.(in Chinese))
[6]	姜福兴，XUN L，杨淑华. 采场覆岩空间破裂与采动应力场的微震探测研究[J]. 岩土工程学报，2003，25(1)：23-25.(JIANG Fuxing，XUN L，YANG Shuhua. Study on microseismic monitoring for spatial structure of overlying strata and mining pressure field in longwall face[J]. Chinese Journal of Geotechnical Engineering，2003，25(1)：23-25.(in Chinese))
[8]	贺虎，窦林名，巩思园，等. 覆岩关键层运动诱发冲击的规律研究[J]. 岩土工程学报，2010，32(8)：1 261-1 265.(HE Hu，DOU Linming，GONG Siyuan，et al. Rock burst rules induced by cracking of overlying key stratum[J]. Chinese Journal of Geotechnical Engineering，2010，32(8)：1 261-1 265.(in Chinese))
[10]	陆菜平，窦林名，吴兴荣，等. 岩体微震监测的频谱分析与信号识别[J]. 岩土工程学报，2005，27(7)：772-775.(LU Caiping，DOU Linming，WU Xingrong，et al. Frequency spectrum analysis on microseismic monitoring and signal differentiation of rock material[J]. Chinese Journal of Geotechnical Engineering，2005，27(7)：772-775.(in Chinese))
[14]	姜福兴，苗小虎，王存文，等. 构造控制型冲击地压的微地震监测预警研究与实践[J]. 煤炭学报，2010，35(6)：900-903.(JIANG Fuxing，MIAO Xiaohu，WANG Cunwen，et al. Predicting research and practice of tectonic-controlled coal burst by microseismic monitoring[J]. Journal of China Coal Society，2010，35(6)：900-903.(in Chinese))
[15]	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))
[16]	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)：1 511-1 516.(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)：1 511-1 516.(in Chinese))
[18]	赵阳升，冯增朝，万志军. 岩体动力破坏的最小能量原理[J]. 岩石力学与工程学报，2003，22(11)：1 781-1 783.(ZHAO Yangsheng，FENG Zengchao，WAN Zhijun. Least energy principle of dynamical failure of rock mass[J]. Chinese Journal of Rock Mechanics and Engineering，2003，22(11)：1 781-1 783.(in Chinese))
[7]	姜福兴，杨淑华，XUN L. 微地震监测揭示的采场围岩空间破裂形态[J]. 煤炭学报，2003，28(4)：357-360.(JIANG Fuxing，YANG Shuhua，XUN L. Spatial fracturing progresses of surrounding rock masses in longwall face monitored by microseismic monitoring techniques[J]. Journal of China Coal Society，2003，28(4)：357-360.(in Chinese))
[17]	成云海. 微地震定位监测在采场冲击地压防治中的应用[博士学位论文][D]. 青岛：山东科技大学，2006.(CHENG Yunhai. Preventing coal bump by appling microseismic locating monitoring technology in longwall face[Ph. D. Thesis][D]. Qingdao：Shangdong University of Science and Technology，2006.(in Chinese))
[3]	钱鸣高，缪协兴，许家林，等. 岩层控制的关键层理论[M]. 徐州：中国矿业大学出版社，2003：106-111(QIAN Minggao，MIU Xiexing，XU Jialin，et al. Key strata theory in ground control[M]. Xuzhou：China University of Ming and Technology Press，2003：106-111.(in Chinese))
[12]	陈通，王双明，王悦，等. 长壁工作面采动引起的微震活动分布规律研究[J]. 采矿与安全工程学报，2018，35(4)：795-800. (CHEN Tong，WANG Shuangming，WANG Yue，et a1. Study on the distribution of microseismic activities caused by longwall mining[J]. Journal of Mining and Safety Engineering，2018，35(4)：795-800.(in Chinese))
[13]	陈尚本，安伯义. 冲击地压预测预报与防治成套技术研究[J]. 山东科技大学学报：自然科学版，2010，29(4)：63-66.(CHEN Shangben，AN Boyi. Research on Complete Techniques for Prediction and Control of Rock Bursts[J]. Journal of Shandong University of Science and Technology：Natural Science，2010，29(4)：63-66.(in Chinese))