并行电法监测工作面“垮落带”岩层动态变化
|
摘要
在工作面高抽巷中布置电法监测系统,所有电极均布置在巷道底板位置,采用并行电法仪采集数据,进行高分辨地电阻法反演成像,根据工作面回采与电性参数变化关系,分析了"垮落带"岩层的动态变化特征:伴随回采工作面的推进,存在采动应力影响,观测范围局部岩层裂隙发育,导致周期性的电性变化,可能与工作面周期来压事件有关;工作面周期来压期间,覆岩破坏可能以大块破断与冒落为主,电性参数变化大;工作面周期来压间隔期内,覆岩破坏可能以小块破断与冒落为主,电性参数呈渐变形式;给出了工作面超前采动应力作用范围、周期来压步距及垮落带高度。
The observation system of electrical method was laid in the gas drainage tunnel above the coal face,with all the electrodes set in the tunnel floor.The electrical data were collected by the parallel electrical instrument,and the resistivity inversion of high-resolution ground electric resistance method was adopted to acquire the measured images.Based on the relationship between the electrical character variation and coal face caving locations,the dynamic variation features of caving zone strata were analyzed as follows:accompanying to coal face mining,there exists mining-induced stress in some locations of overburden strata,which lead to periodic electric character variation related to cycle weighting;during cycle weighting,the main form of overburden failures is large block of fracturing and collapsing,and the electric character features change greatly;during the interval of cycle weighting,the main form of overburden failures is small block of fracturing and falling,and the electric character features vary gradully;the results also yield the advanced range of mining-induced stress,the cycle weighting interval and the height of caving zone for the surveyed coal face.
The observation system of electrical method was laid in the gas drainage tunnel above the coal face,with all the electrodes set in the tunnel floor.The electrical data were collected by the parallel electrical instrument,and the resistivity inversion of high-resolution ground electric resistance method was adopted to acquire the measured images.Based on the relationship between the electrical character variation and coal face caving locations,the dynamic variation features of caving zone strata were analyzed as follows:accompanying to coal face mining,there exists mining-induced stress in some locations of overburden strata,which lead to periodic electric character variation related to cycle weighting;during cycle weighting,the main form of overburden failures is large block of fracturing and collapsing,and the electric character features change greatly;during the interval of cycle weighting,the main form of overburden failures is small block of fracturing and falling,and the electric character features vary gradully;the results also yield the advanced range of mining-induced stress,the cycle weighting interval and the height of caving zone for the surveyed coal face.
引文
[1]缪协兴,陈荣华,浦海,等.采场覆岩厚关键层破断与冒落规律分析[J].岩石力学与工程学报,2005,24(8):1289-1295.Miao Xiexing,Chen Ronghua,Pu Hai,et al.Analysis of breakageand collapse of thick key strata around coal face[J].Chinese Journalof Rock Mechanics and Engineering,2005,24(8):1289-1295.
[2]杨科,谢广祥.采动裂隙分布及其演化特征的采厚效应[J].煤炭学报,2008,33(10):1092-1096.Yang Ke,Xie Guangxiang.Caving thickness effects on distributionand evolution characteristics of mining induced fracture[J].Journalof China Coal Society,2008,33(10):1092-1096.
[3]张平松,刘盛东,吴荣新,等.采煤面覆岩变形与破坏立体电法动态测试[J].岩石力学与工程学报2009,28(9):1870-1875.Zhang Pingsong,Liu Shengdong,Wu Rongxin,et al.Dynamic detec-tion of overburden deformation and failure in mining workface by 3Dresistivity method[J].Chinese Journal of Rock Mechanics and Engi-neering,2009,28(9):1870-1875.
[4]刘盛东,吴荣新,张平松,等.高密度电阻率法观测煤层上覆岩层破坏[J].煤炭科学技术,2001,29(4):18-20.Liu Shengdong,Wu Rongxin,Zhang Pingsong,et al.High density e-lectric resistance method applied to monitor and measure over-burnden failure above seam[J].Coal Science and Technology,2001,29(4):18-20.
[5]康永华,王济忠,孔凡铭,等.覆岩破坏的钻孔观测方法[J].煤炭科学技术,2002,30(2):26-28.Kang Yonghua,Wang Jizhong,Kong Fanming,et al.Bore hole surveymethod for overburden failure[J].Coal Science and Technology,2002,30(2):26-28.
[6]杨永康,康天合,兰毅,等.浅埋综放L工作面开采方法及其矿压实测研究[J].岩石力学与工程学报,2011,30(2):244-253.Yang Yongkang,Kang Tianhe,Lan Yi,et al.Study of mining methodof L-shaped working face by fully-mechanized sublevel caving min-ing in shallow buried thick coal seam and its underground pressurefield observation[J].Chinese Journal of Rock Mechanics and Engi-neering,2011,30(2):244-253.
[7]曹树刚,徐健,雷才国,等.复杂条件下急倾斜综采工作面支架适应性分析[J].煤炭学报,2010,35(10):1599-1603.Cao Shugang,Xu Jian,Lei Caiguo,et al.The stent adaptability ofsteep fully mechanized working face under the complex conditions[J].Journal of China Coal Society,2010,35(10):1599-1603.
[8]缪协兴,钱鸣高.超长综放工作面覆岩关键层破断特征及对采场矿压的影响[J].岩石力学与工程学报,2003,22(1):45-47.Miao Xiexing,Qian Minggao.Broken feature of key strata and its in-fluence on rock pressure in super-length fully-mechanized coal face[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(1):45-47.
[9]吴洪词,张小彬,包太,等.采动覆岩活动规律的非连续变形分析动态模拟[J].煤炭学报,2001,26(5):486-492.Wu Hongci,Zhang Xiaobin,Bao Tai,et al.Dynamic modeling formovement behavior of mined overlying strata using discontinuous de-formation analysis method[J].Journal of China Coal Society,2001,26(5):486-492.
[10]于克君,骆循,张兴民.煤层顶板“两带”高度的微地震监测技术[J].煤田地质与勘探,2002,30(1):47-51.Yu Kejun,Luo Xun,Zhang Xingmin.The technique of micro-seizmic monitoring the height of“two zones”[J].Coal Geology&Exploration,2002,30(1):47-51.
[11]卢国志,汤建泉,宋振骐.传递岩梁周期裂断步距与周期来压步距差异分析[J].岩土工程学报,2010,32(4):538-541.Lu Guozhi,Tang Jianquan,Song Zhenqi.Difference between cyclicfracturing and cyclic weighting interval of transferring rock beams[J].Chinese Journal of Geotechnical Engineering,2010,32(4):538-541.
[12]吴荣新,刘盛东,周官群.高分辨地电阻率法探测煤矿地质异常体[J].煤炭科学技术,2007,35(7):33-38.Wu Rongxin,Liu Shengdong,Zhou Guanqun.High-resolutionground electric resistance rate method to probe unusual mass inmine geology[J].Coal Science and Technology,2007,35(7):33-38.
[13]吴荣新,方良成.采用网络并行电法仪探测采煤工作面无煤区[J].安徽理工大学学报(自然科学版),2007,27(2):6-9.Wu Rongxin,Fang Liangcheng.The application of the network par-allel galvanic exploration system on the surveying of whole-rock are-a in coal mines[J].Journal of Anhui University of Science andTechnology(Natural Science),2007,27(2):6-9.
[14]吴荣新,张平松,刘盛东.双巷网络并行电法探测工作面内薄煤区范围[J].岩石力学与工程学报,2009,28(9):1834-1838.Wu Rongxin,Zhang Pingsong,Liu Shengdong.The exploration oftwo-gateways network parallel electrical technology for thin-coal ar-ea within coal face[J].Chinese Journal of Rock Mechanics andEngineering,2009,28(9):1834-1838.
[15]吴荣新,刘盛东,张平松.双巷并行电法探测煤层工作面底板富水区[J].煤炭学报,2010,35(3):454-457.Wu Rongxin,Liu Shengdong,Zhang Pingsong.The exploration oftwo-gateways parallel 3-D electrical technology for water-rich areawithin coal face floor[J].Journal of China Coal Society,2010,35(3):454-457.
[16]程久龙,刘斌,于师建,等.覆岩破坏直流电场特征数值计算[J].计算物理,1999,16(1):54-58.Cheng Jiulong,Liu Bin,Yu Shijian,et al.The calculation of directcurrent field character of overburden failure[J].Chinese Journal ofComputational Physics,1999,16(1):54-58.
[17]刘树才,刘鑫明,姜志海,等.煤层底板导水裂隙演化规律的电法探测研究[J].岩石力学与工程学报,2009,28(2):348-356.Liu Shucai,Liu Xinming,Jiang Zhihai,et al.Research on electricalprediction for evaluating water conducting fracture floor[J].Chi-nese Journal of Rock Mechanics and Engineering,2009,28(2):348-356.
[2]杨科,谢广祥.采动裂隙分布及其演化特征的采厚效应[J].煤炭学报,2008,33(10):1092-1096.Yang Ke,Xie Guangxiang.Caving thickness effects on distributionand evolution characteristics of mining induced fracture[J].Journalof China Coal Society,2008,33(10):1092-1096.
[3]张平松,刘盛东,吴荣新,等.采煤面覆岩变形与破坏立体电法动态测试[J].岩石力学与工程学报2009,28(9):1870-1875.Zhang Pingsong,Liu Shengdong,Wu Rongxin,et al.Dynamic detec-tion of overburden deformation and failure in mining workface by 3Dresistivity method[J].Chinese Journal of Rock Mechanics and Engi-neering,2009,28(9):1870-1875.
[4]刘盛东,吴荣新,张平松,等.高密度电阻率法观测煤层上覆岩层破坏[J].煤炭科学技术,2001,29(4):18-20.Liu Shengdong,Wu Rongxin,Zhang Pingsong,et al.High density e-lectric resistance method applied to monitor and measure over-burnden failure above seam[J].Coal Science and Technology,2001,29(4):18-20.
[5]康永华,王济忠,孔凡铭,等.覆岩破坏的钻孔观测方法[J].煤炭科学技术,2002,30(2):26-28.Kang Yonghua,Wang Jizhong,Kong Fanming,et al.Bore hole surveymethod for overburden failure[J].Coal Science and Technology,2002,30(2):26-28.
[6]杨永康,康天合,兰毅,等.浅埋综放L工作面开采方法及其矿压实测研究[J].岩石力学与工程学报,2011,30(2):244-253.Yang Yongkang,Kang Tianhe,Lan Yi,et al.Study of mining methodof L-shaped working face by fully-mechanized sublevel caving min-ing in shallow buried thick coal seam and its underground pressurefield observation[J].Chinese Journal of Rock Mechanics and Engi-neering,2011,30(2):244-253.
[7]曹树刚,徐健,雷才国,等.复杂条件下急倾斜综采工作面支架适应性分析[J].煤炭学报,2010,35(10):1599-1603.Cao Shugang,Xu Jian,Lei Caiguo,et al.The stent adaptability ofsteep fully mechanized working face under the complex conditions[J].Journal of China Coal Society,2010,35(10):1599-1603.
[8]缪协兴,钱鸣高.超长综放工作面覆岩关键层破断特征及对采场矿压的影响[J].岩石力学与工程学报,2003,22(1):45-47.Miao Xiexing,Qian Minggao.Broken feature of key strata and its in-fluence on rock pressure in super-length fully-mechanized coal face[J].Chinese Journal of Rock Mechanics and Engineering,2003,22(1):45-47.
[9]吴洪词,张小彬,包太,等.采动覆岩活动规律的非连续变形分析动态模拟[J].煤炭学报,2001,26(5):486-492.Wu Hongci,Zhang Xiaobin,Bao Tai,et al.Dynamic modeling formovement behavior of mined overlying strata using discontinuous de-formation analysis method[J].Journal of China Coal Society,2001,26(5):486-492.
[10]于克君,骆循,张兴民.煤层顶板“两带”高度的微地震监测技术[J].煤田地质与勘探,2002,30(1):47-51.Yu Kejun,Luo Xun,Zhang Xingmin.The technique of micro-seizmic monitoring the height of“two zones”[J].Coal Geology&Exploration,2002,30(1):47-51.
[11]卢国志,汤建泉,宋振骐.传递岩梁周期裂断步距与周期来压步距差异分析[J].岩土工程学报,2010,32(4):538-541.Lu Guozhi,Tang Jianquan,Song Zhenqi.Difference between cyclicfracturing and cyclic weighting interval of transferring rock beams[J].Chinese Journal of Geotechnical Engineering,2010,32(4):538-541.
[12]吴荣新,刘盛东,周官群.高分辨地电阻率法探测煤矿地质异常体[J].煤炭科学技术,2007,35(7):33-38.Wu Rongxin,Liu Shengdong,Zhou Guanqun.High-resolutionground electric resistance rate method to probe unusual mass inmine geology[J].Coal Science and Technology,2007,35(7):33-38.
[13]吴荣新,方良成.采用网络并行电法仪探测采煤工作面无煤区[J].安徽理工大学学报(自然科学版),2007,27(2):6-9.Wu Rongxin,Fang Liangcheng.The application of the network par-allel galvanic exploration system on the surveying of whole-rock are-a in coal mines[J].Journal of Anhui University of Science andTechnology(Natural Science),2007,27(2):6-9.
[14]吴荣新,张平松,刘盛东.双巷网络并行电法探测工作面内薄煤区范围[J].岩石力学与工程学报,2009,28(9):1834-1838.Wu Rongxin,Zhang Pingsong,Liu Shengdong.The exploration oftwo-gateways network parallel electrical technology for thin-coal ar-ea within coal face[J].Chinese Journal of Rock Mechanics andEngineering,2009,28(9):1834-1838.
[15]吴荣新,刘盛东,张平松.双巷并行电法探测煤层工作面底板富水区[J].煤炭学报,2010,35(3):454-457.Wu Rongxin,Liu Shengdong,Zhang Pingsong.The exploration oftwo-gateways parallel 3-D electrical technology for water-rich areawithin coal face floor[J].Journal of China Coal Society,2010,35(3):454-457.
[16]程久龙,刘斌,于师建,等.覆岩破坏直流电场特征数值计算[J].计算物理,1999,16(1):54-58.Cheng Jiulong,Liu Bin,Yu Shijian,et al.The calculation of directcurrent field character of overburden failure[J].Chinese Journal ofComputational Physics,1999,16(1):54-58.
[17]刘树才,刘鑫明,姜志海,等.煤层底板导水裂隙演化规律的电法探测研究[J].岩石力学与工程学报,2009,28(2):348-356.Liu Shucai,Liu Xinming,Jiang Zhihai,et al.Research on electricalprediction for evaluating water conducting fracture floor[J].Chi-nese Journal of Rock Mechanics and Engineering,2009,28(2):348-356.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心