组合方式对煤岩组合体力学特性和破坏特征影响的试验研究
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摘要
为探讨组合方式对煤岩组合体力学特性和破坏特征的影响,利用MTS815岩石力学试验系统,分别对岩-煤-岩(YMY)、岩-煤(YM)及煤-岩(MY)3种组合方式试件进行了单轴压缩和三轴压缩试验研究。试验结果表明,组合体试件破坏主要集中在其煤体部分,而与组合和加载接触方式无关;煤体部分损伤发展和破坏程度的加剧,在一定程度上会诱导岩体出现损伤和发生破坏。单轴加载条件下,3种组合方式均表现为以煤体部分拉张破坏为主的破坏特征,YMY组合的平均抗压强度为40.03 MPa,分别是YM和MY组合方式对应平均值的1.80和1.53倍;三轴加载条件下,均表现为以煤体部分剪切破坏为主的破坏特征;随围压压力增加,各组合方式三轴抗压强度平均值逐渐趋近。
To discuss the effects of coal-rock combination mode on its mechanical and damaging characteristics,the uniaxial and triaxial compressive tests for three combination modes,such as Rock-Coal-Rock(YMY),Rock-Coal(YM) and Coal-Rock(MY),were carried out on MTS815 Rock Mechanics Testing System.The results show that the failure mainly concentrates on the coal part of combination specimen,and do not be affected by the combining mode and the loading condition.The development of damage and increase of failure extent in coal part can result in the emergence of damage and failure in rock part to some extent.The failure states are mainly tensile failure and happens in coal part for uniaxial compressive test.The uniaxial compressive strength of YMY is 40.03 MPa,which is 1.80 and 1.53 times of YM and MY,respectively.Under triaxial compressive condition,the failure are all mainly shear failure in coal part,and the average triaxial strength for three combination modes gradually approaches with the confining pressure increasing.
To discuss the effects of coal-rock combination mode on its mechanical and damaging characteristics,the uniaxial and triaxial compressive tests for three combination modes,such as Rock-Coal-Rock(YMY),Rock-Coal(YM) and Coal-Rock(MY),were carried out on MTS815 Rock Mechanics Testing System.The results show that the failure mainly concentrates on the coal part of combination specimen,and do not be affected by the combining mode and the loading condition.The development of damage and increase of failure extent in coal part can result in the emergence of damage and failure in rock part to some extent.The failure states are mainly tensile failure and happens in coal part for uniaxial compressive test.The uniaxial compressive strength of YMY is 40.03 MPa,which is 1.80 and 1.53 times of YM and MY,respectively.Under triaxial compressive condition,the failure are all mainly shear failure in coal part,and the average triaxial strength for three combination modes gradually approaches with the confining pressure increasing.
引文
[1]谢和平,周宏伟,刘建锋,等.不同开采条件下采动力学行为研究[J].煤炭学报,2011,36(7):1067-1074.Xie Heping,Zhou Hongwei,Liu Jianfeng,et al.Mining-induced me-chanical behavior in coal seams under different mining layouts[J].Journal of China Coal Society,2011,36(7):1067-1074.
[2]Petukhov I M,Linkov A M.The theory of post-failure deformationsand the problem of stability in rock mechanics[J].InternationalJournal of Rock Mechanics and Mining Sciences&GeomechanicsAbstracts,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实验研究[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 ofinteraction of two rock specimen under uniaxial compression[J].Journal of Northeastern University(Natural Science),1997,18(4):382-385.
[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实验研究[J].地震,1999,14(4):413-418.Lin Peng,Tang Chun’an,Chen Zhonghui,et al.Numerical and ex-perimental study of deformation and failure behavior in a double rockspecimen system[J].Earthquake,1999,14(4):413-418.
[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):1457-1464.Xie Heping,Chen Zhonghui,Zhou Hongwei,et al.Study on two-bodymechanical model based on interaction between structural body andgeo-body[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(9):1457-1464.
[6]王学滨.煤岩两体模型变形破坏数值模拟[J].岩土力学,2006,27(7):1066-1070.Wang Xuebin.Numerical simulation of deformation and failure fortwo bodies model composed of rock and coal[J].Rock and Soil Me-chanics,2006,27(7):1066-1070.
[7]窦林名,田京城,陆菜平,等.组合煤岩冲击破坏电磁辐射规律研究[J].岩石力学与工程学报,2005,24(19):3541-3544.Dou Linming,Tian Jingcheng,Lu Caiping,et al.Research on electro-magnetic radiation rules of composed coal-rock burst failure[J].Chi-nese Journal of Rock Mechanics and Engineering,2005,24(19):3541-3544.
[8]陆菜平,窦林名,吴兴荣.组合煤岩冲击倾向性演化及声电效应的试验研究[J].岩石力学与工程学报,2007,26(12):2549-2555.Lu Caiping,Dou Linming,Wu Xingrong.Experimental research onrules of rockburst tendency evolution and acoustic-electromagneticeffects of compound coal-rock samples[J].Chinese Journal of RockMechanics and Engineering,2007,26(12):2549-2555.
[9]陆菜平.组合煤岩的强度弱化减冲原理及其应用[D].徐州:中国矿业大学,2008:24-32.Lu Caiping.Intensity weakening theory for rockburst of compoundcoal-rock and its application[D].Xuzhou:China University of Min-ing and Technology,2008:24-32.
[10]左建平,谢和平,吴爱民,等.深部煤岩单体及组合体的破坏机制及力学特性研究[J].岩石力学与工程学报,2011,30(1):84-92.Zuo Jianping,Xie Heping,Wu Aimin,et al.Investigation on failuremechanisms and mechanical behaviors of deep coal-rock singlebody and combined body[J].Chinese Journal of Rock Mechanicsand Engineering,2011,30(1):84-92.
[11]左建平,谢和平,孟冰冰,等.煤岩组合体分级加卸载特性的试验研究[J].岩土力学,2011,32(5):1287-1296.Zuo Jianping,Xie Heping,Meng Bingbing,et al.Experimental re-search on loading-unloading behavior of coal-rock combinationbodies at different stress levels[J].Rock and Soil Mechanics,2011,32(5):1287-1296.
[12]左建平,裴建良,刘建锋,等.煤岩体破裂过程中声发射行为及时空演化机制[J].岩石力学与工程学报,2011,30(8):1564-1570.Zuo Jianping,Pei Jianliang,Liu Jianfeng,et al.Investigation on a-coustic emission behavior and its time-space evolution mechanismin failure process of coal-rock combined body[J].Chinese Journalof Rock Mechanics and Engineering,2011,30(8):1564-1570.
[13]赵毅鑫,姜耀东,祝捷,等.煤岩组合体变形破坏前兆信息的试验研究[J].岩石力学与工程学报,2008,27(2):339-346.Zhao Yixin,Jiang Yaodong,Zhu Jie,et al.Experimental study onprecursory information of deformations of coal-rock composite sam-ples before failure[J].Chinese Journal of Rock Mechanics and En-gineering,2008,27(2):339-346.
[14]刘建新,唐春安,朱万成,等.煤岩串联组合模型及冲击地压机理的研究[J].岩土工程学报,2004,26(2):276-280.Liu Jianxin,Tang Chun’an,Zhu Wancheng,et al.Rock-coal modelfor studying the rockburst[J].Chinese Jounal of Geotechnical En-gineering,2004,26(2):276-280.
[15]刘波,杨仁树,郭东明,等.孙村煤矿-1100m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):2042-2048.Liu Bo,Yang Renshu,Guo Dongming,et al.Burst-prone experi-ments of coal-rock combination at-1 100 m level in Suncun CoalMine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(14):2042-2048.
[16]郭东明.湖西矿井深部煤岩组合体宏细观破坏试验与理论研究[D].北京:中国矿业大学(北京),2010:21-29.Guo Dongming.Experimental and theoretical study on macroscopicand microscopic damage of coal-rock combinations in Huxi DeepCoal Mine[D].Beijing:China University of Mining and Technology(Beijing),2010:21-29.
[17]姚精明,闫永业,尹光志,等.坚硬顶板组合煤岩样破坏电磁辐射规律及其应用[J].重庆大学学报,2011,34(5):71-75.Yao Jingming,Yan Yongye,Yin Guangzhi,et al.The EME rules ofcomposed coal and rock samples with hard roof failure and their ap-plication[J].Journal of Chongqing University,2011,34(5):71-75.
[18]GB/T23561.7-2009煤和岩石物理力学性质测定方法——第7部分:单轴抗压强度测定及软化系数计算方法[S].北京:中国标准出版社,2009.
[2]Petukhov I M,Linkov A M.The theory of post-failure deformationsand the problem of stability in rock mechanics[J].InternationalJournal of Rock Mechanics and Mining Sciences&GeomechanicsAbstracts,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实验研究[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 ofinteraction of two rock specimen under uniaxial compression[J].Journal of Northeastern University(Natural Science),1997,18(4):382-385.
[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实验研究[J].地震,1999,14(4):413-418.Lin Peng,Tang Chun’an,Chen Zhonghui,et al.Numerical and ex-perimental study of deformation and failure behavior in a double rockspecimen system[J].Earthquake,1999,14(4):413-418.
[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):1457-1464.Xie Heping,Chen Zhonghui,Zhou Hongwei,et al.Study on two-bodymechanical model based on interaction between structural body andgeo-body[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(9):1457-1464.
[6]王学滨.煤岩两体模型变形破坏数值模拟[J].岩土力学,2006,27(7):1066-1070.Wang Xuebin.Numerical simulation of deformation and failure fortwo bodies model composed of rock and coal[J].Rock and Soil Me-chanics,2006,27(7):1066-1070.
[7]窦林名,田京城,陆菜平,等.组合煤岩冲击破坏电磁辐射规律研究[J].岩石力学与工程学报,2005,24(19):3541-3544.Dou Linming,Tian Jingcheng,Lu Caiping,et al.Research on electro-magnetic radiation rules of composed coal-rock burst failure[J].Chi-nese Journal of Rock Mechanics and Engineering,2005,24(19):3541-3544.
[8]陆菜平,窦林名,吴兴荣.组合煤岩冲击倾向性演化及声电效应的试验研究[J].岩石力学与工程学报,2007,26(12):2549-2555.Lu Caiping,Dou Linming,Wu Xingrong.Experimental research onrules of rockburst tendency evolution and acoustic-electromagneticeffects of compound coal-rock samples[J].Chinese Journal of RockMechanics and Engineering,2007,26(12):2549-2555.
[9]陆菜平.组合煤岩的强度弱化减冲原理及其应用[D].徐州:中国矿业大学,2008:24-32.Lu Caiping.Intensity weakening theory for rockburst of compoundcoal-rock and its application[D].Xuzhou:China University of Min-ing and Technology,2008:24-32.
[10]左建平,谢和平,吴爱民,等.深部煤岩单体及组合体的破坏机制及力学特性研究[J].岩石力学与工程学报,2011,30(1):84-92.Zuo Jianping,Xie Heping,Wu Aimin,et al.Investigation on failuremechanisms and mechanical behaviors of deep coal-rock singlebody and combined body[J].Chinese Journal of Rock Mechanicsand Engineering,2011,30(1):84-92.
[11]左建平,谢和平,孟冰冰,等.煤岩组合体分级加卸载特性的试验研究[J].岩土力学,2011,32(5):1287-1296.Zuo Jianping,Xie Heping,Meng Bingbing,et al.Experimental re-search on loading-unloading behavior of coal-rock combinationbodies at different stress levels[J].Rock and Soil Mechanics,2011,32(5):1287-1296.
[12]左建平,裴建良,刘建锋,等.煤岩体破裂过程中声发射行为及时空演化机制[J].岩石力学与工程学报,2011,30(8):1564-1570.Zuo Jianping,Pei Jianliang,Liu Jianfeng,et al.Investigation on a-coustic emission behavior and its time-space evolution mechanismin failure process of coal-rock combined body[J].Chinese Journalof Rock Mechanics and Engineering,2011,30(8):1564-1570.
[13]赵毅鑫,姜耀东,祝捷,等.煤岩组合体变形破坏前兆信息的试验研究[J].岩石力学与工程学报,2008,27(2):339-346.Zhao Yixin,Jiang Yaodong,Zhu Jie,et al.Experimental study onprecursory information of deformations of coal-rock composite sam-ples before failure[J].Chinese Journal of Rock Mechanics and En-gineering,2008,27(2):339-346.
[14]刘建新,唐春安,朱万成,等.煤岩串联组合模型及冲击地压机理的研究[J].岩土工程学报,2004,26(2):276-280.Liu Jianxin,Tang Chun’an,Zhu Wancheng,et al.Rock-coal modelfor studying the rockburst[J].Chinese Jounal of Geotechnical En-gineering,2004,26(2):276-280.
[15]刘波,杨仁树,郭东明,等.孙村煤矿-1100m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):2042-2048.Liu Bo,Yang Renshu,Guo Dongming,et al.Burst-prone experi-ments of coal-rock combination at-1 100 m level in Suncun CoalMine[J].Chinese Journal of Rock Mechanics and Engineering,2004,23(14):2042-2048.
[16]郭东明.湖西矿井深部煤岩组合体宏细观破坏试验与理论研究[D].北京:中国矿业大学(北京),2010:21-29.Guo Dongming.Experimental and theoretical study on macroscopicand microscopic damage of coal-rock combinations in Huxi DeepCoal Mine[D].Beijing:China University of Mining and Technology(Beijing),2010:21-29.
[17]姚精明,闫永业,尹光志,等.坚硬顶板组合煤岩样破坏电磁辐射规律及其应用[J].重庆大学学报,2011,34(5):71-75.Yao Jingming,Yan Yongye,Yin Guangzhi,et al.The EME rules ofcomposed coal and rock samples with hard roof failure and their ap-plication[J].Journal of Chongqing University,2011,34(5):71-75.
[18]GB/T23561.7-2009煤和岩石物理力学性质测定方法——第7部分:单轴抗压强度测定及软化系数计算方法[S].北京:中国标准出版社,2009.
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