煤岩组合体变形破坏前兆信息的试验研究
|
摘要
讨论煤、岩体在2种组合模式下受压破坏过程中能量集聚与释放规律。通过试验分析,得出"煤–围岩"系统失稳规律,并结合红外热像、声发射、应变等监测手段,对"砂岩–煤"及"砂岩–煤–泥岩"两类组合体进行单向压缩试验,对比研究不同煤、岩组合体失稳破坏的前兆信息,得到煤、岩组合体失稳破坏过程中红外热像、声发射能谱及组合体不同部位应变的变化规律。研究结果表明,对比煤样单体,煤–岩组合试样失稳更突然,失稳前兆点更难于捕捉。
The failure features of the composite samples under uniaxial loading are discussed.The characteristics of energy dissipation and translation in the process of coal-rock sample failure are analyzed;and an experimental system for analyzing the mechanism and precursory information of the failure of coal-rock composite samples is developed.The system is composed of the thermal infrared(TIR) observation system,the stress and strain measurement system,and the acoustic emission monitoring system.In order to investigate the TIR and acoustic responses of different kinds of coal-rock composite samples,two types of composites are tested,which are composed of three bars of sandstone-coal-mudstone and two bars of sandstone-coal,respectively.The uniaxial compressive load tests are carried out to observe the features of TIR,acoustic emission and strain precursory information in the process of sample failure.The detailed investigations on the precursor information of stress points are conducted based on the TIR images,infrared radiation temperature,infrared radiation images,acoustic emission,and strain date.The analytical results show that the coal-rock composite specimens are under stress accelerated accumulation state before failure.Moreover,it is more difficult to forecast the failure of coal-rock composite samples compared with the failure prediction of normal coal samples.
The failure features of the composite samples under uniaxial loading are discussed.The characteristics of energy dissipation and translation in the process of coal-rock sample failure are analyzed;and an experimental system for analyzing the mechanism and precursory information of the failure of coal-rock composite samples is developed.The system is composed of the thermal infrared(TIR) observation system,the stress and strain measurement system,and the acoustic emission monitoring system.In order to investigate the TIR and acoustic responses of different kinds of coal-rock composite samples,two types of composites are tested,which are composed of three bars of sandstone-coal-mudstone and two bars of sandstone-coal,respectively.The uniaxial compressive load tests are carried out to observe the features of TIR,acoustic emission and strain precursory information in the process of sample failure.The detailed investigations on the precursor information of stress points are conducted based on the TIR images,infrared radiation temperature,infrared radiation images,acoustic emission,and strain date.The analytical results show that the coal-rock composite specimens are under stress accelerated accumulation state before failure.Moreover,it is more difficult to forecast the failure of coal-rock composite samples compared with the failure prediction of normal coal samples.
引文
[1]赵本均,腾学军.冲击地压及其防治[M].北京:煤炭工业出版社,1995:1–56,216–304.(ZHAO Benjun,TENG Xuejun.Coal bumps and its control[M].Beijing:China Coal Industry Publishing House,1995:1–56,216–304.(in Chinese))
[2]PETUKHOV I M,LINKOV A M.The theory of post-failure deformations and the problem of stability in rock mechanics[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1979,16(5):57–76.
[3]陈忠辉,傅宇方,唐春安.单轴压缩下双试样相互作用的试验研究[J].东北大学学报(自然科学版),1997,18(4):382–385.(CHEN Zhonghui,FU Yufang,TANG Chun′an.Experimental study on interaction of two rock specimens under uniaxial compression[J].Journal of Northeastern University(Natural Science),1997,18(4):382–385.(in Chinese))
[4]林鹏,唐春安,陈忠辉,等.二岩体系统破坏全过程的数值模拟和试验研究[J].地震,1999,19(4):413–418.(LIN Peng,TANG Chun′an,CHEN Zhonghui,et al.Numerical and experimental study on deformation and failure behavior in a double-rock specimen system[J].Earthquake,1999,19(4):413–418.(in Chinese))
[5]谢和平,陈忠辉,周宏伟,等.基于工程体与地质体相互作用的两体力学模型初探[J].岩石力学与工程学报,2005,24(9):1 487–1 464.(XIE Heping,CHEN Zhonghui,ZHOU Hongwei,et al.Study on two-body mechanical model based on interaction between structural body and geo-body[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(9):1 487–1 464.(in Chinese))
[6]刘建新,唐春安,朱万成,等.煤岩串联组合模型及冲击地压机制的研究[J].岩土工程学报,2004,26(2):276–280.(LIU Jianxin,TANG Chun′an,ZHU Wancheng,et al.Rock-coal model for studying the rockburst[J].Chinese Journal of Geotechnical Engineering,2004,26(2):276–280.(in Chinese))
[7]刘波,杨仁树,郭东明,等.孙村煤矿–1 100 m水平深部煤岩冲击倾向性组合试验研究[J].岩石力学与工程学报,2004,23(14):2 402–2 408.(LIU Bo,YANG Renshu,GUO Dongming,et al.Burst-prone experiments of coal-rock combination at-1 100 m level in Suncun coal mine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(14):2 402–2 408.(in Chinese))
[8]齐庆新.层状煤岩体结构破坏的冲击矿压理论与实践研究[博士学位论文][D].北京:煤炭科学研究总院北京开采研究所,1996.(QI Qingxin.Theory of rockburst caused by structure failure of bedded coal rock mass and its application[Ph.D.Thesis][D].Beijing:Beijing Mining Research Institute,China Coal Research Institute,1996.(in Chinese))
[9]WU L X,WANG J Z.Features of infrared thermal image and radiation temperature of coal rocks loaded[J].Science in China(Series D),1998,28(2):41–46.
[10]WU L X,WANG J Z.Infrared radiation features of coal and rocks under loading[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(7):969–976.
[11]WU L X,LIU S J,WU Y H,et al.Changes in IR with rock deformation[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(6):825–831.
[12]董玉芬,于波,郝凤山,等.煤变形破裂过程中红外信息的试验研究[J].试验力学,2002,17(2):206–211.(DONG Yufen,YU Bo,HAO Fengshan,et al.An experimental research on the infrared radiation in coal rupture[J].Journal of Experimental Mechanics,2002,17(2):206–211.(in Chinese))
[13]赵毅鑫,姜耀东,韩志茹.冲击倾向性煤体破坏过程声热效应的试验研究[J].岩石力学与工程学报,2007,26(5):965–971.(ZHAO Yixin,JIANG Yaodong,HAN Zhiru.Experimental study on acoustic and thermal infrared characteristics of bump-prone coal[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):965–971.(in Chinese))
[14]赵毅鑫.煤矿冲击地压机制研究[博士学位论文][D].北京:中国矿业大学,2006.(ZHAO Yixin.Investigation on the mechanism of coal mine bumps[Ph.D.Thesis][D].Beijing:China University of Mining and Technology,2006.(in Chinese))
[15]尤明庆,苏承东.大理岩试样的长度对单轴压缩试验的影响[J].岩石力学与工程学报,2004,23(22):3 754–3 760.(YOU Mingqing,SU Chengdong.Effect of length of fine and coarse crystal marble specimens on uniaxial compression tests[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(22):3 754–3 760.(in Chinese))
[16]刘占春,宋恩春.开滦赵各庄矿深部地压特征、防治对策与十四水平可采性研究[R].开滦:开滦矿务局.1996.(LIU Zhanchun,SONG Enchun.Investigation on geological characteristics,treatment measures,and mining possibility of the 14th level in deep mining of Zhaogezhuang Mine in Kailuan[R].Kailuan:Kailuan Mining Group,1996.(in Chinese))
[17]刘文岗,姜耀东,单晓云,等.赵各庄矿深部巷道冲击地压诱发因素分析[J].煤炭科学技术,2006,34(11):60–63,66.(LIU Wengang,JIANG Yaodong,SHAN Xiaoyun,et al.Analysis of induced factors of pressure bump occurred in deep mine roadway of Zhaogezhuang Mine[J].Coal Science and Technology,2006,34(11):60–63,66.(in Chinese))
[18]姜耀东,赵毅鑫,何满潮,等.冲击地压机制的细观试验研究[J].岩石力学与工程学报,2007,26(5):901–907.(JIANG Yaodong,ZHAO Yixin,HE Manchao,et al.Investigation on mechanism of coal mine bumps based on mesoscopic experiments[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):901–907.(in Chinese))
[2]PETUKHOV I M,LINKOV A M.The theory of post-failure deformations and the problem of stability in rock mechanics[J].International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts,1979,16(5):57–76.
[3]陈忠辉,傅宇方,唐春安.单轴压缩下双试样相互作用的试验研究[J].东北大学学报(自然科学版),1997,18(4):382–385.(CHEN Zhonghui,FU Yufang,TANG Chun′an.Experimental study on interaction of two rock specimens under uniaxial compression[J].Journal of Northeastern University(Natural Science),1997,18(4):382–385.(in Chinese))
[4]林鹏,唐春安,陈忠辉,等.二岩体系统破坏全过程的数值模拟和试验研究[J].地震,1999,19(4):413–418.(LIN Peng,TANG Chun′an,CHEN Zhonghui,et al.Numerical and experimental study on deformation and failure behavior in a double-rock specimen system[J].Earthquake,1999,19(4):413–418.(in Chinese))
[5]谢和平,陈忠辉,周宏伟,等.基于工程体与地质体相互作用的两体力学模型初探[J].岩石力学与工程学报,2005,24(9):1 487–1 464.(XIE Heping,CHEN Zhonghui,ZHOU Hongwei,et al.Study on two-body mechanical model based on interaction between structural body and geo-body[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(9):1 487–1 464.(in Chinese))
[6]刘建新,唐春安,朱万成,等.煤岩串联组合模型及冲击地压机制的研究[J].岩土工程学报,2004,26(2):276–280.(LIU Jianxin,TANG Chun′an,ZHU Wancheng,et al.Rock-coal model for studying the rockburst[J].Chinese Journal of Geotechnical Engineering,2004,26(2):276–280.(in Chinese))
[7]刘波,杨仁树,郭东明,等.孙村煤矿–1 100 m水平深部煤岩冲击倾向性组合试验研究[J].岩石力学与工程学报,2004,23(14):2 402–2 408.(LIU Bo,YANG Renshu,GUO Dongming,et al.Burst-prone experiments of coal-rock combination at-1 100 m level in Suncun coal mine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(14):2 402–2 408.(in Chinese))
[8]齐庆新.层状煤岩体结构破坏的冲击矿压理论与实践研究[博士学位论文][D].北京:煤炭科学研究总院北京开采研究所,1996.(QI Qingxin.Theory of rockburst caused by structure failure of bedded coal rock mass and its application[Ph.D.Thesis][D].Beijing:Beijing Mining Research Institute,China Coal Research Institute,1996.(in Chinese))
[9]WU L X,WANG J Z.Features of infrared thermal image and radiation temperature of coal rocks loaded[J].Science in China(Series D),1998,28(2):41–46.
[10]WU L X,WANG J Z.Infrared radiation features of coal and rocks under loading[J].International Journal of Rock Mechanics and Mining Sciences,1998,35(7):969–976.
[11]WU L X,LIU S J,WU Y H,et al.Changes in IR with rock deformation[J].International Journal of Rock Mechanics and Mining Sciences,2002,39(6):825–831.
[12]董玉芬,于波,郝凤山,等.煤变形破裂过程中红外信息的试验研究[J].试验力学,2002,17(2):206–211.(DONG Yufen,YU Bo,HAO Fengshan,et al.An experimental research on the infrared radiation in coal rupture[J].Journal of Experimental Mechanics,2002,17(2):206–211.(in Chinese))
[13]赵毅鑫,姜耀东,韩志茹.冲击倾向性煤体破坏过程声热效应的试验研究[J].岩石力学与工程学报,2007,26(5):965–971.(ZHAO Yixin,JIANG Yaodong,HAN Zhiru.Experimental study on acoustic and thermal infrared characteristics of bump-prone coal[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):965–971.(in Chinese))
[14]赵毅鑫.煤矿冲击地压机制研究[博士学位论文][D].北京:中国矿业大学,2006.(ZHAO Yixin.Investigation on the mechanism of coal mine bumps[Ph.D.Thesis][D].Beijing:China University of Mining and Technology,2006.(in Chinese))
[15]尤明庆,苏承东.大理岩试样的长度对单轴压缩试验的影响[J].岩石力学与工程学报,2004,23(22):3 754–3 760.(YOU Mingqing,SU Chengdong.Effect of length of fine and coarse crystal marble specimens on uniaxial compression tests[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(22):3 754–3 760.(in Chinese))
[16]刘占春,宋恩春.开滦赵各庄矿深部地压特征、防治对策与十四水平可采性研究[R].开滦:开滦矿务局.1996.(LIU Zhanchun,SONG Enchun.Investigation on geological characteristics,treatment measures,and mining possibility of the 14th level in deep mining of Zhaogezhuang Mine in Kailuan[R].Kailuan:Kailuan Mining Group,1996.(in Chinese))
[17]刘文岗,姜耀东,单晓云,等.赵各庄矿深部巷道冲击地压诱发因素分析[J].煤炭科学技术,2006,34(11):60–63,66.(LIU Wengang,JIANG Yaodong,SHAN Xiaoyun,et al.Analysis of induced factors of pressure bump occurred in deep mine roadway of Zhaogezhuang Mine[J].Coal Science and Technology,2006,34(11):60–63,66.(in Chinese))
[18]姜耀东,赵毅鑫,何满潮,等.冲击地压机制的细观试验研究[J].岩石力学与工程学报,2007,26(5):901–907.(JIANG Yaodong,ZHAO Yixin,HE Manchao,et al.Investigation on mechanism of coal mine bumps based on mesoscopic experiments[J].Chinese Journal of Rock Mechanics and Engineering,2007,26(5):901–907.(in Chinese))
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