芦沟煤矿软硬交互覆岩放顶煤开采导水裂缝带高度研究
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摘要
为准确计算软硬交互覆岩放顶煤开采导水裂缝带高度,确保水库水体下采煤的安全,采用地面钻孔冲洗液漏失量法对芦沟煤矿32101工作面导水裂缝带高度进行了现场实测,并根据上覆岩层岩性及结构进行了理论分析计算,综合确定了水库下放顶煤开采工作面导水裂缝带高度。结果表明:根据钻孔冲洗液漏失量法现场实测得到的导水裂缝带高度与理论分析计算得到的导水裂缝带高度基本一致,现场实测与理论分析综合确定的导水裂缝带高度能够满足工程实际需要。芦沟煤矿软硬交互覆岩放顶煤开采导水裂缝带高度为采厚的17.2倍,水库水体下采煤是安全可行的。
In order to accurately calculate the height of water-conductive fracture zone in alternate overburden of soft and hard with top coal caving mining and ensure the safety of mining under water-bodies, the ground drilling fluid leakage method was used to measure the water-conductive fracture zone height of working face 32101 in Lugou coal mine. According to the theoretical analysis and calculation of the overlying strata lithology and structure, the coal mining under the reservoir is comprehensively determined. The results have demonstrated that the height of water-conductive fracture zone obtained through field measurement is basically consistent with that obtained through theoretical analysis,and the height of water-conductive fracture zone comprehensively determined by field measurement and theoretical analysis can meet engineering needs. The height of water-conductive fracture zone in alternate overburden of soft and hard with top coal caving mining in Lugou coal mine is 17.2 times as that of the mining thickness, and the coal mining under water-bodies of the reservoir is safe and feasible.
In order to accurately calculate the height of water-conductive fracture zone in alternate overburden of soft and hard with top coal caving mining and ensure the safety of mining under water-bodies, the ground drilling fluid leakage method was used to measure the water-conductive fracture zone height of working face 32101 in Lugou coal mine. According to the theoretical analysis and calculation of the overlying strata lithology and structure, the coal mining under the reservoir is comprehensively determined. The results have demonstrated that the height of water-conductive fracture zone obtained through field measurement is basically consistent with that obtained through theoretical analysis,and the height of water-conductive fracture zone comprehensively determined by field measurement and theoretical analysis can meet engineering needs. The height of water-conductive fracture zone in alternate overburden of soft and hard with top coal caving mining in Lugou coal mine is 17.2 times as that of the mining thickness, and the coal mining under water-bodies of the reservoir is safe and feasible.
引文
[1]国家安全监管总局,国家煤矿安监局,国家能源局,国家铁路局.建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规范[M].北京:煤炭工业出版社,2017:55-56.
[2]王志强,李鹏飞,王磊,等.再论采场“三带”的划分方法及工程应用[J].煤炭学报,2013,38(增刊2):287-293.WANG Zhiqiang,LI Pengfei,WANG Lei,et al.Method of division and engineering use of“three band”in the stope again[J].Journal of China Coal Society,2013,38(Sup 2):287-293.
[3]滕永海.综放开采导水裂缝带的发育特征与最大高度计算[J].煤炭科学技术,2011,39(4):118-120.TENG Yonghai.Development features and max height calculation of water conducted fractured zone caused by fully mechanized top coal caving mining[J].Coal Science and Technology,2011,39(4):118-120.
[4]许家林,王晓振,刘文涛,等.覆岩主关键层位置对导水裂隙带高度的影响[J].岩石力学与工程学报,2009,28(2):380-385.XU Jialin,WANG Xiaozhen,LIU Wentao,et al.Effects of primary key stratum location on height of water flowing fractured zone[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(2):380-385.
[5]许家林,朱卫兵,王晓振.基于关键层位置的导水裂隙带高度预计方法[J].煤炭学报,2012,37(5):762-769.XU Jialin,ZHU Weibing,WANG Xiaozhen.New method to predict the height of fractured waterconducting zone by location of key strata[J].Journal of China Coal Society,2012,37(5):762-769.
[6]张宏伟,朱志洁,霍利杰,等.特厚煤层综放开采覆岩破坏高度[J].煤炭学报,2014,39(5):816-821.ZHANG Hongwei,ZHU Zhijie,HUO Lijie,et al.Overburden failure height of superhigh seam by fully mechanized caving method[J].Journal of China Coal Society,2014,39(5):816-821.
[7]张玉军,李凤明.高强度综放开采采动覆岩破坏高度及裂隙发育演化监测分析[J].岩石力学与工程学报,2011,31(增刊1):2994-3001.ZHANG Yujun,LI Fengming.Monitoring analysis of fissure development evolution and height of overburden failure of high tension fully-mechanized caving mining[J].Chinese Journal of Rock Mechanics and Engineering,2011,31(Sup 1):2994-3001.
[8]许延春,李俊成,刘世奇,等.综放开采覆岩“两带”高度的计算公式及适用性分析[J].煤矿开采,2011,16(2):4-7,11.XU Yanchun,LI Juncheng,LIU Shiqi,et al.Calculation formula of“two zone”height of overlying strata and its adaptability analysis[J].Coal Mining Technology,2011,16(2):4-7,11.
[9]孙亚军,徐智敏,董青红.小浪底水库下采煤导水裂隙发育监测与模拟研究[J].岩石力学与工程学报,2009,28(2):238-245.SUN Yajun,XU Zhimin,DONG Qinghong.Monitoring and simulation research on development of water flowing fractures for coal mining under Xiaolangdi reservoir[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(2):238-245.
[10]陈佩佩,刘洪泉,张刚艳.海下综放开采防水煤岩柱厚度的确定[J].煤炭学报,2009,34(7):875-880.CHEN Peipei,LIU Hongquan,ZHANG Gangyan.Determination of water proof rock pillar height with the top coal caving under sea[J].Journal of China Coal Society,2009,34(7):875-880.
[11]胡炳南,张华兴,申宝宏.建筑物、水体、铁路及主要井巷煤柱留设与压煤开采指南[M].北京:煤炭工业出版社,2017:8-9.
[12]王文学,隋旺华,董青红,等.松散层下覆岩裂隙采后闭合效应及重复开采覆岩破坏预测[J].煤炭学报,2013,38(10):1728-1734.WANG Wenxue,SUI Wanghua,DOGN Qinghong,et al.Closure effect of mining-induced fractures under sand aquifers and prediction of overburden failure due to re-mining[J].Journal of China Coal Society,2013,38(10):1728-1734.
[13]韩军,张宏伟,高照宇,等.巨厚煤层软弱覆岩分层综放开采覆岩破坏高度研究[J].采矿与安全工程学报,2016,33(2):226-230,237.HAN Jun,ZHANG Hongwei,GAO Zhaoyu,et al.Failure height of weak overburden by layered fully-mechanized mining in extremely thick coal seam[J].Journal of Mining&Safety Engineering,2016,33(2):226-230,237.
[14]许延春,刘世奇,柳昭星,等.近距离厚煤层组工作面覆岩破坏规律实测研究[J].采矿与安全工程学报,2013,30(4):506-511.XU Yanchun,LIU Shiqi,LIU Zhaoxing,et al.Overburden failure laws in working face of short distance thick coal seams group[J].Journal of Mining&Safety Engineering,2013,30(4):506-511.
[15]付宝杰,高明中,涂敏,等.组合硬岩层顶板破断规律及导水裂隙电法探测[J].水文地质工程地质,2015,42(2):140-144.FU Baojie,GAO Mingzhong,TU Min,et al.Composite hard strata break rules and the electric tests fractured of water-conducting zone[J].Hydrogeology&Engineering Geology,2015,42(2):140-144.
[16]谭毅,郭文兵,杨达明,等.非充分采动下浅埋坚硬顶板“两带”高度分析[J].采矿与安全工程学报,2017,34(5):845-851.TAN Yi,GUO Wenbing,YANG Daming,et al.Analysis on height of“two zone”under subcritical mining in shallow coal seam with hard roof[J].Journal of Mining&Safety Engineering,2017,34(5):845-851.
[17]许家林,钱鸣高.覆岩关键层位置的判别方法[J].中国矿业大学学报,2000,29(5):463-467.XU Jialin,QIAN Minggao.Method to distinguish key strata in overburden[J].Journal of China University of Mining&Technology,2000,29(5):463-467.
[18]王连国,王占盛,黄继辉,等.薄基岩厚风积沙浅埋煤层导水裂隙带高度预计[J].采矿与安全工程学报,2012,29(5):607-612.WANG Lianguo,WANG Zhansheng,HUANG Jihui,et al.Prediction on the height of water-flowing fractured zone for shallow seam covered with thin bedrock and thick windblown sands[J].Journal of Mining&Safety Engineering,2012,29(5):607-612.
[19]张杰,余学义,成连华.浅煤层长壁间隔工作面隔水土层破坏机理[J].辽宁工程技术大学学报(自然科学版),2008,27(6):801-804.ZHANG Jie,YU Xueyi,CHENG Lianhua.Failure mechanism of soil layer in long wall face intermission advance in shallow seam mining[J].Journal of Liaoning Technical University(Natural Science),2008,27(6):801-804.
[2]王志强,李鹏飞,王磊,等.再论采场“三带”的划分方法及工程应用[J].煤炭学报,2013,38(增刊2):287-293.WANG Zhiqiang,LI Pengfei,WANG Lei,et al.Method of division and engineering use of“three band”in the stope again[J].Journal of China Coal Society,2013,38(Sup 2):287-293.
[3]滕永海.综放开采导水裂缝带的发育特征与最大高度计算[J].煤炭科学技术,2011,39(4):118-120.TENG Yonghai.Development features and max height calculation of water conducted fractured zone caused by fully mechanized top coal caving mining[J].Coal Science and Technology,2011,39(4):118-120.
[4]许家林,王晓振,刘文涛,等.覆岩主关键层位置对导水裂隙带高度的影响[J].岩石力学与工程学报,2009,28(2):380-385.XU Jialin,WANG Xiaozhen,LIU Wentao,et al.Effects of primary key stratum location on height of water flowing fractured zone[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(2):380-385.
[5]许家林,朱卫兵,王晓振.基于关键层位置的导水裂隙带高度预计方法[J].煤炭学报,2012,37(5):762-769.XU Jialin,ZHU Weibing,WANG Xiaozhen.New method to predict the height of fractured waterconducting zone by location of key strata[J].Journal of China Coal Society,2012,37(5):762-769.
[6]张宏伟,朱志洁,霍利杰,等.特厚煤层综放开采覆岩破坏高度[J].煤炭学报,2014,39(5):816-821.ZHANG Hongwei,ZHU Zhijie,HUO Lijie,et al.Overburden failure height of superhigh seam by fully mechanized caving method[J].Journal of China Coal Society,2014,39(5):816-821.
[7]张玉军,李凤明.高强度综放开采采动覆岩破坏高度及裂隙发育演化监测分析[J].岩石力学与工程学报,2011,31(增刊1):2994-3001.ZHANG Yujun,LI Fengming.Monitoring analysis of fissure development evolution and height of overburden failure of high tension fully-mechanized caving mining[J].Chinese Journal of Rock Mechanics and Engineering,2011,31(Sup 1):2994-3001.
[8]许延春,李俊成,刘世奇,等.综放开采覆岩“两带”高度的计算公式及适用性分析[J].煤矿开采,2011,16(2):4-7,11.XU Yanchun,LI Juncheng,LIU Shiqi,et al.Calculation formula of“two zone”height of overlying strata and its adaptability analysis[J].Coal Mining Technology,2011,16(2):4-7,11.
[9]孙亚军,徐智敏,董青红.小浪底水库下采煤导水裂隙发育监测与模拟研究[J].岩石力学与工程学报,2009,28(2):238-245.SUN Yajun,XU Zhimin,DONG Qinghong.Monitoring and simulation research on development of water flowing fractures for coal mining under Xiaolangdi reservoir[J].Chinese Journal of Rock Mechanics and Engineering,2009,28(2):238-245.
[10]陈佩佩,刘洪泉,张刚艳.海下综放开采防水煤岩柱厚度的确定[J].煤炭学报,2009,34(7):875-880.CHEN Peipei,LIU Hongquan,ZHANG Gangyan.Determination of water proof rock pillar height with the top coal caving under sea[J].Journal of China Coal Society,2009,34(7):875-880.
[11]胡炳南,张华兴,申宝宏.建筑物、水体、铁路及主要井巷煤柱留设与压煤开采指南[M].北京:煤炭工业出版社,2017:8-9.
[12]王文学,隋旺华,董青红,等.松散层下覆岩裂隙采后闭合效应及重复开采覆岩破坏预测[J].煤炭学报,2013,38(10):1728-1734.WANG Wenxue,SUI Wanghua,DOGN Qinghong,et al.Closure effect of mining-induced fractures under sand aquifers and prediction of overburden failure due to re-mining[J].Journal of China Coal Society,2013,38(10):1728-1734.
[13]韩军,张宏伟,高照宇,等.巨厚煤层软弱覆岩分层综放开采覆岩破坏高度研究[J].采矿与安全工程学报,2016,33(2):226-230,237.HAN Jun,ZHANG Hongwei,GAO Zhaoyu,et al.Failure height of weak overburden by layered fully-mechanized mining in extremely thick coal seam[J].Journal of Mining&Safety Engineering,2016,33(2):226-230,237.
[14]许延春,刘世奇,柳昭星,等.近距离厚煤层组工作面覆岩破坏规律实测研究[J].采矿与安全工程学报,2013,30(4):506-511.XU Yanchun,LIU Shiqi,LIU Zhaoxing,et al.Overburden failure laws in working face of short distance thick coal seams group[J].Journal of Mining&Safety Engineering,2013,30(4):506-511.
[15]付宝杰,高明中,涂敏,等.组合硬岩层顶板破断规律及导水裂隙电法探测[J].水文地质工程地质,2015,42(2):140-144.FU Baojie,GAO Mingzhong,TU Min,et al.Composite hard strata break rules and the electric tests fractured of water-conducting zone[J].Hydrogeology&Engineering Geology,2015,42(2):140-144.
[16]谭毅,郭文兵,杨达明,等.非充分采动下浅埋坚硬顶板“两带”高度分析[J].采矿与安全工程学报,2017,34(5):845-851.TAN Yi,GUO Wenbing,YANG Daming,et al.Analysis on height of“two zone”under subcritical mining in shallow coal seam with hard roof[J].Journal of Mining&Safety Engineering,2017,34(5):845-851.
[17]许家林,钱鸣高.覆岩关键层位置的判别方法[J].中国矿业大学学报,2000,29(5):463-467.XU Jialin,QIAN Minggao.Method to distinguish key strata in overburden[J].Journal of China University of Mining&Technology,2000,29(5):463-467.
[18]王连国,王占盛,黄继辉,等.薄基岩厚风积沙浅埋煤层导水裂隙带高度预计[J].采矿与安全工程学报,2012,29(5):607-612.WANG Lianguo,WANG Zhansheng,HUANG Jihui,et al.Prediction on the height of water-flowing fractured zone for shallow seam covered with thin bedrock and thick windblown sands[J].Journal of Mining&Safety Engineering,2012,29(5):607-612.
[19]张杰,余学义,成连华.浅煤层长壁间隔工作面隔水土层破坏机理[J].辽宁工程技术大学学报(自然科学版),2008,27(6):801-804.ZHANG Jie,YU Xueyi,CHENG Lianhua.Failure mechanism of soil layer in long wall face intermission advance in shallow seam mining[J].Journal of Liaoning Technical University(Natural Science),2008,27(6):801-804.