采动诱发断层带岩体劣化微震响应特征
Micro-seismic response characteristics of rock mass deterioration induced by mining in fault zone
-
摘要: 以淮南矿区潘二矿12123工作面开采A组煤所面临的复杂断层带为研究对象，建立了微震监测系统，获取了构造发育区的微震活动数据，分析了断层带岩体劣化过程的微震事件分布及震源参数的响应特征，揭示了诱发微震响应的力学机制。研究结果表明：随回采与断层间存在的时空关系，微震事件表现出显著的时空强特征；累计能量、b值、能量指数以及累计视体积等随回采呈现阶段性变化，能够有效反映断层围岩的破坏状态；受回采线与结构面所构成的岩体“三角孤岛区”影响，应力区域性的集中分布所诱发的岩体破坏释放能量呈现时空迁移特性。Abstract: Taking the complex fault zone of group A coal mining in 12123 working face of Pan’er Mine in Huainan Mining area as the research object, a micro-seismic monitoring system was established to obtain the micro-seismic activity data in the structural development area, and the distribution of micro-seismic events and the response characteristics of source parameters during the deterioration of rock mass in the fault zone were analyzed, revealing the mechanical mechanism of the induced micro-seismic response. The results show that micro-seismic events show significant spatial and temporal characteristics with the relationship between mining and faults. The cumulative energy, b value, energy index and cumulative apparent volume change gradually with mining, which can effectively reflect the failure state of fault surrounding rock. Under the influence of “triangular isolated island area” of rock mass formed by mining line and structural plane, the energy released by rock mass failure induced by regional concentrated distribution of stress shows a space-time migration characteristic.
-
-
[1] 潘一山．煤与瓦斯突出、冲击地压复合动力灾害一体化研究[J]．煤炭学报，2016，41（1）：105－112. PAN Yishan. Integrated study on compound dynamic disaster of coal-gas outburst and rockburst[J]． Journal of China Coal Society, 2016, 41（1）: 105-112.
[2] 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.
[3] 蒋金泉，武泉林，曲华．硬厚岩层下逆断层采动应力演化与断层活化特征[J]．煤炭学报，2015，40（2）：267. JIANG Jinquan, WU Quanlin, QU Hua. Characteristic of mining stress evolution and activation of the reverse fault below the hard-thick strata[J]. Journal of China Coal Society, 2015, 40（2）: 267.
[4] 窦林名，赵成国，杨思光．煤矿开采冲击矿压灾害防治[Ｍ]．徐州：中国矿业大学出版社，2006. [5] 李振雷，窦林名，蔡武，等．深部厚煤层断层煤柱型冲击矿压机制研究[J]．岩石力学与工程学报，2013，32（2）： 333－342. LI Zhenlei, DOU Linming, CAI Wu, et al. Fault-pillar induced rock burst mechanism of thick coal seam in deep mining[J]. Chinese Journal of Rock Mechanics and Engineering, 2013, 32（2）: 333-342.
[6] 王浩，赵毅鑫，牟宗龙，等．综放工作面采动诱发逆断层张剪失稳特征及矿震活动规律分析[J]．煤炭学报，2017，42（10）：2573－2581. WANG Hao, ZHAO Yixin, MU Zonglong, et al. Characteristics of seismic activity and tensile-slip features of fault under stress and displacement disturbance in full-mechanized workface[J]. Journal of China Coal Society, 2017, 42（10）: 2573-2581.
[7] 郭晓强，窦林名，陆菜平，等．采动诱发断层活化的微震活动规律研究[J]．煤矿安全，2011，42（1）：26－30. GUO Xiaoqiang, DOU Linming, LU Caiping, et al. Research on the microseismic activity of fault reaction induced by coal mining[J]. Safety in Ｃoal Ｍines, 2011, 42（1）: 26-30.
[8] 来兴平，刘小明，曹建涛，等．开采扰动区断层采动活化诱发岩体动态变形模型实验[J]．西安科技大学学报，2014，34（6）：646－651. LAI Xingping, LIU Xiaoming, CAO Jiantao, et al. Experiment on rock-mass dynamic deformation due to the fault mobilization in the mining disturbed zone[J]. Journal of Xi’an University of Science and Technology, 2014, 34（6）: 646-651.
[9] 冯夏庭，肖亚勋，丰光亮，等．岩爆孕育过程研究[J]．岩石力学与工程学报，2019，38（4）：649－673. FENG Xiating, XIAO Yaxun, FENG Guangliang, et al. Study on the development process of rockbursts[J]. Chinese Journal of Rock Mechanics and Engineering, 2019, 38（4）: 649-673.
[10] 刘晓国，魏廷双，余国锋，等．张集煤矿突水危险域微震监测系统应用[J]．煤矿安全，2020，51（3）：111. LIU Xiaoguo, WEI Tingshuang, YU Guofeng, et al. Application of micro-seismic monitoring system in dangerous area of water inrush in Zhangji Coal Mine[J]. Safety in Coal Mines, 2020, 51（3）: 111.
[11] 姜福兴，姚顺利，魏全德，等．重复采动引发矿震的机理探讨及灾害控制[J]．采矿与安全工程学报，2015， 32（3）：349－355. JIANG Fuxing, YAO Shunli, WEI Quande, et al. Tremor mechanism and disaster control during repeated mining[J]. Journal of Mining & Safety Engineering, 2015, 32（3）: 349-355.
[12] 潘一山．煤矿冲击地压扰动响应失稳理论及应用[J]．煤炭学报，2018，43（8）：2091－2098. PAN Yishan. Disturbance response instability theory of rockburst in coal mine[J]. Journal of China Coal Society, 2018, 43（8）: 2091-2098.
[13] 姜福兴，刘伟建，叶根喜，等．构造活化的微震监测与数值模拟耦合研究[J]．岩石力学与工程学报，2010， 29（Ｓ2）：3590－3597. JIANG Fuxing, LIU Weijian, YE Genxi, et al. Coupling study of microseismic monitoring and numerical simulation for tectonic activation[J]. Chinese Journal of Rock Mechanics and Engineering, 2010, 29（S2）: 3590-3597.
[14] 朱斯陶，姜福兴，Ｋ J Ａ Ｋｏｕａｍｅ，等．深井特厚煤层综放工作面断层活化规律研究[J]．岩石力学与工程学报，2016，35（1）：50－58. ZHU Sitao, JIANG Fuxing, K J A Kouame, et al. Fault activation of fully mechanized caving face in extra-thick coal seam of deep shaft[J]. Chinese Journal of Rock Mechanics and Engineering, 2016, 35（1）: 50-58.
[15] 徐奴文，戴峰，周钟，等．岩质边坡微震事件ｂ值特征研究[J]．岩石力学与工程学报，2014，33（Ｓ1）：3368. XU Nuwen, DAI Feng, ZHOU Zhong, et al. Study of characteristics of b value for microseismic events in high rock slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33（S1）: 3368-3374.
[16] 赵金帅，裴书锋，徐进鹏，等．开挖扰动下地下交叉洞室错动带岩体微震演化规律[J]．岩土力学，2020，41（11）：3789－3796. ZHAO Jinshuai, PEI Shufeng, XU Jinpeng, et al. Microseismic evolution of rock mass with staggered zone of underground intersecting chambers under excavation disturbance[J]. Rock and Soil Mechanics, 2020, 41（11）: 3789-3796.
[17] 田向辉，李振雷，宋大钊，等．某冲击地压频发工作面微震冲击前兆信息特征及预警方法研究[J]．岩石力学与工程学报，2020，39（12）：2471－2482. TIAN Xianghui, LI Zhenlei, SONG Dazhao, et al. Study on microseismic precursors and early warning methods in a working face experienced frequent rockbursts[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39（12）: 2471-2482.
[18] 陈栋，王恩元，李楠．千秋煤矿微震震源参数特征以及震源机制分析[J]．煤炭学报，2019，44（7）：2011. CHEN Dong, WANG Enyuan, LI Nan. Analysis of microseismic source parameters and focal mechanism in Qianqiu Coal Mine[J]. Journal of China Coal Society, 2019, 44（7）: 2011.
[19] 徐奴文，戴峰，周钟，等．岩质边坡微震事件ｂ值特征研究[J]．岩石力学与工程学报，2014，33（Ｓ1）：3368. XU Nuwen, DAI Feng, ZHOU Zhong, et al. Study of characteristics of b value for microseismic events in high rock slope[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, 33（S1）: 3368.
[20] 苏晓波，纪洪广，权道路，等．劈裂条件下岩石应变空间变异性与ｂ值关系[J]．煤炭学报，2020，45（Ｓ1）：239－246. SU Xiaobo, JI Hongguang, QUAN Daolu, et al. Ex-perimental study on the relationship between spatial variability of rock strain and fractal dimension of acoustic emission amplitude under brazilian splitting condition[J]. Journal of China Coal Society, 2020, 45（S1）: 239-246.
[21] 陈炳瑞，魏凡博，王睿，等．西南地区某深埋隧道花岗岩破坏机制与前兆特征研究[J]．岩石力学与工程学报，2020，39（3）：469－479. CHEN Bingrui, WEI Fanbo, WANG Rui, et al. Failure mechanisms and precursory characteristics of deep buried granite in a tunnel in southwest China[J]. Chinese Journal of Rock Mechanics and Engineering, 2020, 39（3）: 469－479.
计量
- 文章访问数: 26
- HTML全文浏览量: 1
- PDF下载量: 11
下载:
