特厚煤层巷道冲击特征及冲击危险性评价方法研究
|
摘要
通过研究特厚煤层巷道能量储存、应力分布及围岩强度特征,揭示了特厚煤层巷道与薄及中厚煤层相比具有储存能量多、应力影响范围广及围岩强度低的主要冲击特征。基于特厚煤层巷道冲击特征和冲击地压启动理论,提出了综合弹性能指数、应力比指数和冲击能量速度指数的冲击危险性评价多元指数法,建立了特厚煤层巷道冲击危险性的综合评价指标体系。将该评价指标体系应用于陕西某矿特厚煤层掘进期间巷道冲击危险性评价,根据评价结果对冲击地压危险区域采取了合理的卸压措施,保证了工作面的安全开采。
Through studying the characteristics of energy storage,stress distribution and surrounding rock strength of the roadway in extra-thick coal seam,the main rock burst characteristics of the roadway in extra-thick coal seam compared with the thin and medium-thick coal seams were revealed,such as the more energy storage,wider stress influence range and lower surrounding rock strength. Based on the rock burst characteristics of the roadway in extra-thick coal seam and the theory of rock burst start-up,a multivariate indexes method of the risk assessment on rock burst which integrated the elastic energy index,stress ratio index and impact energy speed index was put forward,then a comprehensive assessment index system for the rock burst risk of the roadway in extra-thick coal seam was established. The assessment index system was applied in the risk assessment on rock burst of the roadway in extra-thick coal seam for a mine in Shaanxi during the excavation period,and the reasonable pressure relief measures were applied in the risk area of rock burst based on the assessment results,which ensured the safe mining of working face.
Through studying the characteristics of energy storage,stress distribution and surrounding rock strength of the roadway in extra-thick coal seam,the main rock burst characteristics of the roadway in extra-thick coal seam compared with the thin and medium-thick coal seams were revealed,such as the more energy storage,wider stress influence range and lower surrounding rock strength. Based on the rock burst characteristics of the roadway in extra-thick coal seam and the theory of rock burst start-up,a multivariate indexes method of the risk assessment on rock burst which integrated the elastic energy index,stress ratio index and impact energy speed index was put forward,then a comprehensive assessment index system for the rock burst risk of the roadway in extra-thick coal seam was established. The assessment index system was applied in the risk assessment on rock burst of the roadway in extra-thick coal seam for a mine in Shaanxi during the excavation period,and the reasonable pressure relief measures were applied in the risk area of rock burst based on the assessment results,which ensured the safe mining of working face.
引文
[1]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.
[2]潘一山,李忠华,章梦涛.我国冲击地压分布、类型、机理及防治研究[J].岩石力学与工程学报,2003,22(11):1844-1851.PAN Yishan,LI Zhonghua,ZHANG Mengtao.Distribution,type,mechanism,and prevention of rockburst in China[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1844-1851.
[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,2001:124-133.
[4]于正兴,姜福兴,桂兵.冲击地压危险性的宏观评价方法在“孤岛”工作面的应用[J].矿业安全与环保,2011,38(5):30-32.YU Zhengxing,JIANG Fuxing,GUI Bing.Macroscopic evaluation method of bumping of danger areas in island coal face[J].Mining Safety and Environmental Protection,2011,38(5):30-32.
[5]姜福兴,舒凑先,王存文.基于应力叠加回采工作面冲击危险性评价[J].岩石力学与工程学报,2015,34(12):2428-2435.JIANG Fuxing,SHU Couxian,WANG Cunwen.Impact risk appraisal of stope working faces based on stress superimposition[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(12):2428-2435.
[6]窦林名,贺虎,何江,等.冲击危险评价的相对应力集中系数叠加法[J].煤炭学报,2018,43(2):327-332.DOU Linming,HE Hu,HE Jiang,et al.New method of rockburst risk assessment using relative stress concentration factor superposition[J].Journal of China Coal Society,2018,43(2):327-332.
[7]齐庆新,李晓璐,赵善坤.煤矿冲击地压应力控制理论与实践[J].煤炭科学技术,2013,41(6):1-5.QI Qingxin,LI Xiaolu,ZHAO Shankun.Theory and practices on stress control of mine pressure bumping[J].Coal Science and Technology,2013,41(6):1-5.
[8]潘俊锋,秦子晗,王书文,等.冲击危险性分源权重综合评价方法[J].煤炭学报,2015,40(10):2327-2335.PAN Junfeng,QIN Zihan,WANG Shuwen,et al.Preliminary study on early warning method based on weight comprehensive and differentload sources of coal bump[J].Journal of China Coal Society,2015,40(10):2327-2335.
[9]侯朝炯.巷道围岩控制[M].徐州:中国矿业大学出版社,2015:49-66.
[10]马念杰,侯朝烔.采准巷道矿压理论及应用[M].北京:煤炭工业出版社,1995:63-69.
[11]温经林.深井条带开采冲击机理及应用研究[D].北京:北京科技大学,2017:71-75.
[12]潘俊锋.煤矿冲击地压启动理论及其成套技术体系研究[J].煤炭学报,2019,44(1):173-182.PAN Junfeng.Theory of rockburst start-up and its complete technology system[J].Journal of China Coal Society,2019,44(1):173-182.
[13]杨光宇,姜福兴,李琳,等.煤矿冲击地压危险性的工程判据研究[J].采矿与安全工程学报,2018,35(6):1200-1207.YANG Guangyu,JIANG Fuxing,LI Lin,et al.Engineering criterion study on coal mining rock burst hazard[J].Journal of Mining and Safety Engineering,2018,35(6):1200-1207.
[14]潘一山,耿琳,李忠华.煤层冲击倾向性与危险性评价指标研究[J].煤炭学报,2010,35(12):1975-1978.PAN Yishan,GENG Lin,LI Zhonghua.Research on evaluation indices for impact tendency and danger of coal seam[J].Journal of China Coal Society,2010,35(12):1975-1978.
[15]尹永明,张兴凯,周建新,等.基于模糊综合评判的冲击地压危险性分区预评价技术研究[J].中国安全生产科学技术,2017,13(3):180-185.YIN Yongming,ZHANG Xingkai,ZHOU Jianxin,et al.Study on zoning pre-evaluation technology of rock burst risk based on fuzzy comprehensive evaluation[J].Journal of Safety Science and Technology,2017,13(3):180-185.
[16]杨光宇,姜福兴,李琳,等.复合动力灾害条件下孤岛工作面区段煤柱宽度留设研究[J].中国安全生产科学技术,2017,13(8):145-151.YANG Guangyu,JIANG Fuxing,LI Lin,et al.Study on the width of mining face in seam island under the condition of compound dynamic disasters[J].Journal of Safety Science and Technology,2017,13(8):145-151.
[2]潘一山,李忠华,章梦涛.我国冲击地压分布、类型、机理及防治研究[J].岩石力学与工程学报,2003,22(11):1844-1851.PAN Yishan,LI Zhonghua,ZHANG Mengtao.Distribution,type,mechanism,and prevention of rockburst in China[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(11):1844-1851.
[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,2001:124-133.
[4]于正兴,姜福兴,桂兵.冲击地压危险性的宏观评价方法在“孤岛”工作面的应用[J].矿业安全与环保,2011,38(5):30-32.YU Zhengxing,JIANG Fuxing,GUI Bing.Macroscopic evaluation method of bumping of danger areas in island coal face[J].Mining Safety and Environmental Protection,2011,38(5):30-32.
[5]姜福兴,舒凑先,王存文.基于应力叠加回采工作面冲击危险性评价[J].岩石力学与工程学报,2015,34(12):2428-2435.JIANG Fuxing,SHU Couxian,WANG Cunwen.Impact risk appraisal of stope working faces based on stress superimposition[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(12):2428-2435.
[6]窦林名,贺虎,何江,等.冲击危险评价的相对应力集中系数叠加法[J].煤炭学报,2018,43(2):327-332.DOU Linming,HE Hu,HE Jiang,et al.New method of rockburst risk assessment using relative stress concentration factor superposition[J].Journal of China Coal Society,2018,43(2):327-332.
[7]齐庆新,李晓璐,赵善坤.煤矿冲击地压应力控制理论与实践[J].煤炭科学技术,2013,41(6):1-5.QI Qingxin,LI Xiaolu,ZHAO Shankun.Theory and practices on stress control of mine pressure bumping[J].Coal Science and Technology,2013,41(6):1-5.
[8]潘俊锋,秦子晗,王书文,等.冲击危险性分源权重综合评价方法[J].煤炭学报,2015,40(10):2327-2335.PAN Junfeng,QIN Zihan,WANG Shuwen,et al.Preliminary study on early warning method based on weight comprehensive and differentload sources of coal bump[J].Journal of China Coal Society,2015,40(10):2327-2335.
[9]侯朝炯.巷道围岩控制[M].徐州:中国矿业大学出版社,2015:49-66.
[10]马念杰,侯朝烔.采准巷道矿压理论及应用[M].北京:煤炭工业出版社,1995:63-69.
[11]温经林.深井条带开采冲击机理及应用研究[D].北京:北京科技大学,2017:71-75.
[12]潘俊锋.煤矿冲击地压启动理论及其成套技术体系研究[J].煤炭学报,2019,44(1):173-182.PAN Junfeng.Theory of rockburst start-up and its complete technology system[J].Journal of China Coal Society,2019,44(1):173-182.
[13]杨光宇,姜福兴,李琳,等.煤矿冲击地压危险性的工程判据研究[J].采矿与安全工程学报,2018,35(6):1200-1207.YANG Guangyu,JIANG Fuxing,LI Lin,et al.Engineering criterion study on coal mining rock burst hazard[J].Journal of Mining and Safety Engineering,2018,35(6):1200-1207.
[14]潘一山,耿琳,李忠华.煤层冲击倾向性与危险性评价指标研究[J].煤炭学报,2010,35(12):1975-1978.PAN Yishan,GENG Lin,LI Zhonghua.Research on evaluation indices for impact tendency and danger of coal seam[J].Journal of China Coal Society,2010,35(12):1975-1978.
[15]尹永明,张兴凯,周建新,等.基于模糊综合评判的冲击地压危险性分区预评价技术研究[J].中国安全生产科学技术,2017,13(3):180-185.YIN Yongming,ZHANG Xingkai,ZHOU Jianxin,et al.Study on zoning pre-evaluation technology of rock burst risk based on fuzzy comprehensive evaluation[J].Journal of Safety Science and Technology,2017,13(3):180-185.
[16]杨光宇,姜福兴,李琳,等.复合动力灾害条件下孤岛工作面区段煤柱宽度留设研究[J].中国安全生产科学技术,2017,13(8):145-151.YANG Guangyu,JIANG Fuxing,LI Lin,et al.Study on the width of mining face in seam island under the condition of compound dynamic disasters[J].Journal of Safety Science and Technology,2017,13(8):145-151.