基于高精度微震监测的煤岩破裂与应力分布特征研究
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摘要
采用"最佳D值"设计准则对微震台网最佳布设方案进行了理论研究,得出最优台站布置点即为以震源位置为中心的正n边形的顶点;提出了微震台网布设一般性的原则和P波波速测定方法。采用ARAMIS M/E微震监测系统,对千秋煤矿21141工作面围岩破坏和应力分布特征进行了研究,据此划分了冲击地压的3个高危险区域;指出21141工作面开采已经引起了巨厚砾岩的运动,开采过程中容易诱发底板型冲击地压,应采用放炮断底的解危措施;提出21141工作面密闭墙与终采线间距应大于50 m,区段煤柱应小于5 m。
Adopted the "best D value" design guidelines to account the optimal configuration observation network,the results show that the optimal arrangement of stations located in n vertices of polygon,which is to the source location as the center.Based on theoretical calculations and engineering,proposed the general micro station network layout principles and P wave velocity determination.Based on ARAMIS M/E microseismic monitoring system,researched the characteristic of surrounding rock failure and stress distributed of 21141 workface,and accordingly that divided three high-risk areas;it shows that mining of 21141 workface has caused the thick conglomerate movement,and it leads to the occurrence of bottom-type burst very easy,for this we can blast bottom to reduce risk.And a result is the distance of the closed wall of 21141 workface and coal wall should be more than 50 m,the pillar between workface is less than 5 m.
Adopted the "best D value" design guidelines to account the optimal configuration observation network,the results show that the optimal arrangement of stations located in n vertices of polygon,which is to the source location as the center.Based on theoretical calculations and engineering,proposed the general micro station network layout principles and P wave velocity determination.Based on ARAMIS M/E microseismic monitoring system,researched the characteristic of surrounding rock failure and stress distributed of 21141 workface,and accordingly that divided three high-risk areas;it shows that mining of 21141 workface has caused the thick conglomerate movement,and it leads to the occurrence of bottom-type burst very easy,for this we can blast bottom to reduce risk.And a result is the distance of the closed wall of 21141 workface and coal wall should be more than 50 m,the pillar between workface is less than 5 m.
引文
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[11]唐礼忠,杨承祥,潘长良.大规模深井开采微震监测系统站网布置优化[J].岩土力学与工程学报,2006,25(10):2 036-2042.Tang Lizhong,Yang Chengxiang,Pan Changliang.Optimization ofmicroseismic monitoring network for large-scale deep well mining[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(10):2 036-2 042.
[12]李春睿,康立军,齐庆新,等.深部巷道围岩分区破裂与冲击地压关系初探[J].煤炭学报,2010,35(2):185-190.Li Chunrui,Kang Lijun,Qi Qingxin,et al.Probe into relationshipbetween zonal fracturing and rock burst in deep tunnel[J].Journalof China Coal Society,2010,35(2):185-190.
[13]姜福兴,苗小虎,王存文.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):900-904.Jiang Fuxing,Miao Xiaohu,Wang Cunwen.Predictig research andpractice of tectonic-controlled coal burst by microseism is monito-ring[J].Journal of China Coal Society,2010,35(6):900-904.
[2]唐绍辉,潘懿,黄英华,等.深井矿山地压灾害微震监测技术应用研究[J].岩土力学与工程学报,2009,28(2):3 597-3063.Tang Shaohui,Pan Yi,Huang Yinghua,et al.Mining engineeringdeep mining micro-seismic monitoring source location wave recogni-tion[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(2):3 597-3 063.
[3]窦林名,何学秋.冲击地压防治理论与技术[M].徐州:中国矿业大学出版社,2002.Dou Linming,He Xueqiu.Rockburst control theory and technology[M].Xuzhou:China University of Mining and Technology Press,2002.
[4]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.Qi Qingxin,Dou Linming.Rockburst theory and technology[M].Xuzhou:China University of Mining and Technology Press,2008.
[5]姜福兴,Luo Xun.微震监测技术在矿井岩层破裂监测中的应用[J].岩土力学与工程学报,2002,24(2):147-149.Jiang Fuxing,Luo Xun.Application of microseismic monitoring tech-nology of strata fracturing in underground coal mine[J].ChineseJournal of Rock Mechanics and Engineering,2002,24(2):147-149.
[6]姜福兴,叶根喜,王存文,等.高精度微震监测技术在煤矿突水监测中的应用[J].岩土力学与工程学报,2008,27(9):1 932-1 938.Jiang Fuxing,Ye Genxi,Wang Cunwen,et al.Application of high-precision microseismic monitoring technique to water inrush monito-ring in coal mine[J].Chinese Journal of Rock Mechanics and Engi-neering,2008,27(9):1 932-1 938.
[7]李汯.微震台网的原理及应用[M].北京:地震出版社,1984.Li Hong.Principles and applications of microearthquake[M].Bei-jing:Seismological Press,1984.
[8]巩思园,窦林名,曹安业,等.矿山微震监测台优化布设研究[J].地球物理学报,2010,53(2):457-465.Gong Siyuan,Dou Linming,Cao Anye,et al.Study on optimal con-figuration of seismological observation network for coal mine[J].Chinese Journal of Geophysics,2010,53(2):457-465.
[9]朱广生,陈传仁,桂志先.勘探地震学教程[M].武汉:武汉大学出版社,2005.Zhu Guangsheng,Chen Chuanren,Gui Zhixian.Seismic tutorial[M].Wuhan:Wuhan University Press,2005.
[10]Gibowicz S J,Kijko A.矿山地震学引论[M].修济刚,译.北京:地震出版社,1996.Gibowicz S J,Kijko A.Introduction to mining seismology[M].Xiu Jigang translate.Beijing:Seismological Press,1996.
[11]唐礼忠,杨承祥,潘长良.大规模深井开采微震监测系统站网布置优化[J].岩土力学与工程学报,2006,25(10):2 036-2042.Tang Lizhong,Yang Chengxiang,Pan Changliang.Optimization ofmicroseismic monitoring network for large-scale deep well mining[J].Chinese Journal of Rock Mechanics and Engineering,2006,25(10):2 036-2 042.
[12]李春睿,康立军,齐庆新,等.深部巷道围岩分区破裂与冲击地压关系初探[J].煤炭学报,2010,35(2):185-190.Li Chunrui,Kang Lijun,Qi Qingxin,et al.Probe into relationshipbetween zonal fracturing and rock burst in deep tunnel[J].Journalof China Coal Society,2010,35(2):185-190.
[13]姜福兴,苗小虎,王存文.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):900-904.Jiang Fuxing,Miao Xiaohu,Wang Cunwen.Predictig research andpractice of tectonic-controlled coal burst by microseism is monito-ring[J].Journal of China Coal Society,2010,35(6):900-904.
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