Abstract：The mechanism and prevention of rock burst are investigated based on a rare rock burst accident in which the rock burst around working face and roadway occur simultaneously in the upper slice mining face of extremely thick coal seam with thick and hard roof. The results show that the main cause is the concentrated stress from the top coal pillar, sectional coal pillar with different widths, thick and hard roof and large fault. The bottom coal under roadway and working face is the main hazard body of rock burst. The main mechanical mechanism of rock burst is that the bottom coal produces buckling failure under sudden horizontal stress, and then slips to roadway and working face under the vertical stress. An evaluation method for the influence scope of the top coal pillar and the danger scope of rock burst is proposed in order to provide a scientific basis for making programs to resume production. The relevant programs to resume production are developed and implemented based on the research achievements. Through the implementation of pressure relief in the danger area of rock burst and the real-time monitoring of pressure bumping risk, the production is resumed and the safe mining is ensured.
姜福兴,史先锋*,王存文,魏全德,姚顺利,朱斯陶,耿超. 高应力区分层开采冲击地压事故发生机理研究[J]. 岩土工程学报, 2015, 37(6): 1123-1131.
JIANG Fu-xing, SHI Xian-feng, WANG Cun-wen, WEI Quan-de, YAO Shun-li, ZHU Si-tao, GENG Chao. Mechanical mechanism of rock burst accidents in slice mining face under high pressure. Chinese J. Geot. Eng., 2015, 37(6): 1123-1131.
[1] 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): 1844-1851. (PAN Yi-shan, LI Zhong-hua, ZHANG Meng-tao. Distribution, type mechanism and prevention of rock-burst in China[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(11): 1844–1851. (in Chinese))
[2] 齐庆新, 窦林名. 冲击地压理论与技术[M]. 徐州: 中国矿 业大学出版社, 2008: 1–8. (QI Qing-xin, DOU Lin-ming. Theory and technology of rockburst[M]. Xuzhou: China University of Mining and Technology Press, 2008: 1–8. (in Chinese))
[3] 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: 1–17. (DOU Lin-ming, HE Xue-qiu. Theory and technology of rockburst prevention[M]. Xuzhou: China University of Mining and Technology Press, 2001: 1–17. (in Chinese))
[4] 章梦涛. 冲击地压失稳理论与数值模拟计算[J]. 岩石力学 与工程学报, 1987, 6(3): 197–204. (ZHANG Meng-tao. Instability theory and mathematical model for coal rock bursts[J]. Chinese Journal of Rock Mechanics and Engineering, 1987, 6(3): 197–204. (in Chinese))
[5] 李玉生. 冲击地压机理及其初步应用[J]. 中国矿业学院学 报, 1985(3): 37–43. (LI Yu-sheng. Preliminary application of rock burst mechanism[J]. Journal of China Mining Institute, 1985(3): 37–43. (in Chinese))
[6] 齐庆新. 层状煤岩体结构破坏的冲击矿压理论与实践研究 [D]. 北京: 煤炭科学研究总院, 1996. (QI Qing-xin. The theory of rockburst led by structure failure of bedded coal rock mass[D]. Beijng: China Coal Research Institute, 1996. (in Chinese))
[7] 潘一山, 章梦涛. 冲击地压失稳理论的解析分析[J].岩石力 学与工程学报, 1996, 15(增刊): 504–510. (PAN Yi-shan, ZHANG Meng-tao. The exact solution for rockburst in coal mine by unstability rockburst theory[J]. Chinese Journal of Rock Mechanics and Engineering, 1996, 15(S0): 504– 510.(in Chinese))
[8] 姜耀东, 王 涛, 赵毅鑫, 等. 采动影响下断层活化规律 的数值模拟研究[J]. 中国矿业大学学报, 2013, 42(1): 1–5. (JIANG Yao-dong, WANG Tao, ZHAO Yi-xin, et al. Numerical simulation of fault activation pattern induced by coal extraction[J]. Journal of China University of Mining & Technology, 2013, 42(1): 1–5. (in Chinese))
[9] 窦林名, 陆菜平, 牟宗龙, 等. 冲击矿压的强度弱化减冲 理论及其应用[J]. 煤炭学报, 2005, 30(5): 690–694. (DOU Lin-ming, LU Cai-ping, MU Zong-long, et al. Intensity weakening theory for rockburst and its application[J]. Journal of China Coal Society, 2005, 30(5): 690–694. (in Chinese))
[10] 缪协兴, 安千里, 翟明华. 岩(煤)壁中滑移裂纹扩展的冲 击矿压模型[J]. 中国矿业大学学报, 1999, 28(2): 113–117. (MIAO Xie-xing, AN Qian-li, ZHAI Ming-hua. Model of rockburst for extension of slip fracture in pali-sades[J]. Journal of China University of Mining & Technology, 1999, 28(2): 113–117. (in Chinese))
[11] 高明仕, 窦林名, 张 农, 等. 冲击矿压巷道围岩控制的 强弱强力学模型及其应用分析[J]. 岩土力学, 2008, 29(2): 359–363. (GAO Ming-shi, DOU Lin-ming, ZHANG Nong, et al. Burst strength of surrounding rock control of powerful learning model and its application[J]. Rock and Soil Mechanics, 2008, 29(2): 359–363. (in Chinese))
[12] 潘立友, 杨慧珠. 冲击地压前兆信息识别的扩容理论[J]. 岩石力学与工程学报, 2004, 23(增刊1): 4528–4530. (PAN Li-you, YANG Hui-zhu. Dilatancy theory for identification of premonitory information of rock burst[J]. Chinese Journal of Rock Mechanics and Engineering, 2004, 23(S1): 4528–4530. (in Chinese))
[13] 潘俊锋, 宁 宇, 毛德兵, 等. 煤矿开采冲击地压启动理 论[J]. 岩石力学与工程学报, 2012, 31(3): 586–596. (PAN Jun-feng, NING Yu, MAO De-bing, et al. Theory of rockburst start-up during coal mining[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(3): 586–596. (in Chinese))
[14] 刘金海, 姜福兴, 王乃国, 等. 深井特厚煤层综放工作面 区段煤柱合理宽度研究[J]. 岩石力学与工程学报, 2012, 31(5): 921–927. (LIU Jin-hai, JIANG Fu-xing WANG Nai-guo, et al. Research on reasonable width of segment pillar of fully mechanized caving face in extra-thick coal seam of deep shaft[J]. Chinese Journal of Rock Mechanics and Engineering, 2012, 31(5): 921–927. (in Chinese))
[15] 姜福兴, 魏全德, 王存文, 等. 巨厚砾岩与逆冲断层控制 型特厚煤层冲击地压机理分析[J]. 煤炭学报, 2014, 39(7): 1191-1196. (JIANG Fu-xing, WEI Quan-de, WANG Cun-wen, et al. Analysis of rock burst mechanism in extra-thick coal seam controlled by huge thick conglomerate and thrust fault[J]. Journal of China Coal Society, 2014, 39(7): 1191–1196. (in Chinese))
[16] 徐学锋, 窦林名, 刘 军, 等. 动载扰动诱发底板冲击矿 压演化规律研究[J]. 采矿与安全工程学报, 2012, 29(3): 334–338. (XU Xue-feng, DOU Lin-ming, LIU Jun, et al. Analysis on evolution laws of floor burst induced by dynamic disturbance[J]. Journal of Mining & Engineering, 2012, 29(3): 334–338. (in Chinese))
[17] 曲效成. 厚层坚硬顶板采场动力灾害与控制研究[D]. 北 京: 北京科技大学, 2013. (QU Xiao-cheng. Research on the mechanism and control over burst disasters in working face with hard and thick roof[D]. Beijing: University of Science and Technology Beijing, 2013. (in Chinese))
[18] 张镜剑, 傅冰骏. 岩爆及其判据和防治[J]. 岩石力学与工 程学报, 2008, 27(10): 2034–2042. (ZHANG Jing-jian, FU Bing-jun. Rockburst and its criteria and control[J]. Chinese Journal of Rock Mechanics and Engineering, 2008, 27(10): 2034–2042. (in Chinese))
[19] 徐林生, 王兰生, 李永林. 岩爆形成机制与判据研究[J]. 岩土力学, 2002, 23(3): 300–303. (XU Lin-sheng, WANG Lan-sheng, LI Yong-lin. Study on mechanism and judgement of rockbursts[J]. Rock and Soil Mechanics, 2002, 23(3): 300-303.(in Chinese))
[20] 陈卫忠, 吕森鹏, 郭小红, 等. 基于能量原理的卸围压试 验与岩爆判据研究[J]. 岩石力学与工程学报, 2009, 28(8): 1530- 1540. (CHEN Wei-zhong, Lü Sen-peng, GUO Xiao-hong, et al. Research on unloading confining pressure tests and rockburst criterion based on energy theory[J]. Chinese Journal of Rock Mechanics and Engineering, 2009, 28(8): 1530–1540. (in Chinese))
[21] 钱鸣高, 石平五. 矿山压力与岩层控制[M]. 徐州: 中国矿 业大学出版社, 2003: 218–219. (QIAN Ming-gao, SHI Ping-wu. Mining pressure and strata control[M]. Xuzhou: China University of Mining and Technology Press, 2013: 218-219. (in Chinese))
[22] 陈希哲. 土力学地基基础[M]. 北京: 清华大学出版社, 1986. (CHEN Xi-zhe. Soil mechanics and geotechnical engineering[M]. Beijing: Tsinghua University Press, 1996. (in Chinese))
