基于MTS-AE单轴压缩下的煤岩损伤特征
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摘要
基于MTS-AE单轴压缩条件下,对煤岩损伤、变形与破裂过程进行了测试;运用损伤变量理论,分析单轴压条件下煤样损伤破裂阶段的声发射能量-应力/应变参数与损伤变量之间的内在联系与特征规律。研究结果可对现场安全开采提供一定的理论指导。
Based on the MTS-AE of coal and rock under uniaxial compression damage and crack test.Using damage variable theory,the internal relation between damage variable and acoustic emission energy-stess/strain was analyzed in the stage of uniaxial compression coal crack.The internal characteristics between energy and the function of damage variable has been found.The results provide a theoretical guide for the safe mining.
Based on the MTS-AE of coal and rock under uniaxial compression damage and crack test.Using damage variable theory,the internal relation between damage variable and acoustic emission energy-stess/strain was analyzed in the stage of uniaxial compression coal crack.The internal characteristics between energy and the function of damage variable has been found.The results provide a theoretical guide for the safe mining.
引文
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[2]谢和平,鞠杨,黎立云.基于能量耗散与释放原理的岩石强度与整体破坏准则[J].岩石力学与工程学报,2005,24(17):3004-3010.XIE He-ping,JU Yang,LI Li-yun.Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles[J].Chinese Journal of Rock Mechanics and Technology,2005,24(17):3004-3010.
[3]鞠杨,李业学,谢和平,等.节理岩石的应力波动与能量耗散[J].岩石力学与工程学报,2006,25(12):2426-2434.JU Yang,LI Ye-xue,XIE He-ping,et al.Stress vave propagation and energy dissipation in jointed rocks[J].Chinese Journal of Rock Mechanics and Technology,2006,25(12):2426-2434.
[4]张明,李仲奎,杨强,等.准脆性材料声发射的损伤模式及统计分析[J].岩石力学与工程学报,2006,25(12):2493-2501.ZHANG Ming,LI Zhong-kui,YANG qiang,et al.Adamage model and statistical analysis of acoustic emission for quasi-brittle materrials[J].Chinese Journal of Rock Mechanics and Technology,2006,25(12):2493-2501.
[5]秦四清,李造鼎.岩石声发射的损伤模式及基在地震研究中的初步应用[J].中国地震,1993,9(1):54-59.QIN Si-qing,LI Zao-ding.Adamage model of acoustic emission in rock and its initial applications in seismological research[J].Earthquake Research in China,1993,9(1):54-59.
[6]Szwedzicki T.Rockmass behaviour prior to failure[J].International Journal of Rock Mechanics and Mining Sciences,2003,40(3):573-584.
[7]来兴平,张勇,奚家米,等.基于AE的煤岩破裂与动态失稳特征实验及综合分析[J].西安科技大学学报,2006,26(3):289-292.LAI Xing-ping,ZHANG Yong,XI Jia-mi,et al.Comprehensive characteristics analysis of crack propagation and dyamical de-stabilizaition of coal-rock based on acoustic emission experiment[J].Journal of Xi′an University of Science and Tachnology,2006,26(3):289-292.
[8]尤明庆,华安增.岩石破坏过程的能量分析[J].岩石力学与工程学报,2006,21(6):778-781.YOUMing-qing,HUAAn-zeng.The energy analysis on failure of rocks[J].Chinese Journal of Rock Mechanics and Technol-ogy,2006,21(6):778-781.
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