真三轴加卸载条件下组合煤岩冲击破坏特征研究

doi:10.13722/j.cnki.jrme.2020.0112

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Abstract Loading and unloading experiments on coal-rock combination bodies were carried out by a true triaxial test system to explore the mechanical behavior response characteristics of the combination bodies with different coal thickness proportions and to analyze the influence of the coal thickness proportion on impact failure characteristics of combination bodies. The results show that，as the proportion of the coal thickness increases，many X-shaped conjugate shear cracks form in the bodies，the strength shows a significant decrease trend with a gradually decreasing gradient，and the impact failure characteristics gradually become obvious. The deformation mainly occurs in the initial stress loading stage and the vertical stress reloading stage，and the maximum principal strain plays a dominant role in deformation. The characteristics of the full stress-strain curves of combination bodies with different coal thickness proportions are similar. As the proportion of the coal thickness increases，however，the plastic deformation gradually increases. According to the experimental results，under similar mining and geological conditions，the burst trend of the floor increases with a gradually decreasing gradient as the bottom coal thickness increases. When the bottom coal thickness increases to a certain value，the increase of the bottom coal thickness has no obvious superimposed effect on floor burst. The research results can provide a reference for further study of occurrence mechanisms of floor burst，the construction of pilot test platform for prevention and control technology，and the development of engineering simulation.

Key words： mining engineering floor burst coal-rock combination true triaxial loading and unloading

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	Articles by authors
	ZHANG Chenyang1
	2
	3
	PAN Junfeng1
	2
	3
	XIA Yongxue1
	2
	3
	YANG Guangyu1
	2
	3

Cite this article:

ZHANG Chenyang1,2,3, et al. Research on impact failure characteristics of coal-rock combination bodies under true triaxial loading and unloading conditions #br#[J]. , 2020, 39(8): 1522-1533.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0112 OR https://rockmech.whrsm.ac.cn/EN/Y2020/V39/I8/1522

[1]	ZHAO T B，GUO W Y，TAN Y L，et al. Case studies of rock bursts under complicated geological conditions during multi-seam mining at a depth of 800 m[J]. Rock Mechanics and Rock Engineering，2018，51(1)：1 539-1 564.
[2]	姜福兴，魏全德，姚顺利，等. 冲击地压防治关键理论与技术分析[J]. 煤炭科学技术，2013，41(6)：6-9.(JIANG Fuxing，WEI Quande，YAO Shunli，et al. Key theory and technical analysis on mine pressure bumping prevention and control[J]. Coal Science and Technology，2013，41(6)：6-9.(in Chinese))
[3]	徐学锋，窦林名，刘军，等. 煤矿巷道底板冲击矿压发生的原因及控制研究[J]. 岩土力学，2010，31(6)：1 977-1 982.(XU Xuefeng，DOU Linming，LIU Jun，et al. Research of reasons and controlling for floor burst in coal mine roadway[J]. Rock and Soil Mechanics，2010，31(6)：1 977-1 982.(in Chinese))
[4]	潘俊锋. 半孤岛面全煤巷道底板冲击启动原理分析[J]. 煤炭学报，2011，36(增2)：332-338.(PAN Junfeng. Start-up principium of rock burst in whole coal roadway floor in half-island face[J]. Journal of China Coal Society，2011，36(Supp.2)：332-338.(in Chinese))
[5]	史庆稳. 煤矿巷道底板冲击地压发生机制与控制研究[硕士学位论文][D]. 北京：煤炭科学研究总院，2016.(SHI Qingwen. The type of floor rock burst of coal mine roadway and coordinating release-support measurement[M. S. Thesis][D]. Beijing：China Coal Research Institute，2016.(in Chinese))
[6]	张晨阳. 底煤厚度对巷道底板冲击启动的影响规律研究[硕士学位论文][D]. 北京：煤炭科学研究总院，2018.(ZHANG Chenyang. Research of the influence laws of bottom coal thickness on roadway floor burst start-up[M. S. Thesis][D]. Beijing：China Coal Research Institute，2018.(in Chinese))
[7]	姜耀东，王涛，宋义敏，等. 煤岩组合结构失稳滑动的试验研究[J]. 煤炭学报，2013，38(2)：177-182.(JIANG Yaodong，WANG Tao，SONG Yimin，et al. Experimental study on the stick-slip process of coal-rock composite samples[J]. Journal of China Coal Society，2013，38(2)：177-182.(in Chinese))
[8]	窦林名，陆菜平，牟宗龙，等. 组合煤岩冲击倾向性特性试验研究[J]. 采矿与安全工程学报，2006，23(1)：43-46.(DOU Linming，LU Caiping，MU Zonglong，et al. Rock burst tendency of coal-rock combinations sample[J]. Journal of Mining and Safety Engineering，2006，23(1)：43-46.(in Chinese))
[9]	左建平，陈岩，崔凡. 不同煤岩组合体力学特性差异及冲击倾向性分析[J]. 中国矿业大学学报，2018，47(1)：81-87.(ZUO Jianping，ChEN Yan，CUI Fan. Investigation on mechanical properties and rock burst tendency of different coal-rock combined bodies[J]. Journal of China University of Mining and Technology，2018，47(1)：81-87.(in Chinese))
[10]	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)：1 287-1 296.(ZUO Jianping，XIE Heping，MENG Bingbing，et al. Experimental research on loading-unloading behavior of coal-rock combination bodies at different stress levels[J]. Rock and Soil Mechanics，2011，32(5)：1 287-1 296.(in Chinese))
[11]	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 failure mechanisms and mechanical behaviors of deep coal-rock single body and combined body[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(1)：84-92.(in Chinese))
[12]	GONG F Q，YE H，LUO Y. The effect of high loading rate on the behaviour and mechanical properties of coal-rock combined body[J]. Shock and Vibration，2018，2018(6)：1-9.
[13]	赵鑫毅，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 on precursory information of deformations of coal-rock composite samples before failure[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(2)：339-346.(in Chinese))
[14]	朱卓慧，冯涛，宫凤强，等. 煤岩组合体分级循环加卸载力学特性的试验研究[J]. 中南大学学报：自然科学版，2016，47(7)：2 469-2 475.(ZHU Zhuohui，FENG Tao，GONG Fengqiang，et al. Experimental research of mechanical properties on grading cycle loading-unloading behavior of coal-rock combination bodies at different stress levels[J]. Journal of Central South University：Science and Technology，2016，47(7)：2 469-2 475.(in Chinese))
[15]	刘少虹，秦子晗，娄金福. 一维动静加载下组合煤岩动态破坏特性的试验研究[J]. 岩石力学与工程学报，2014，33(10)：2 064-2 075. (LIU Shaohong，QIN Zihan，LOU Jinfu. Experimental study of dynamic failure characteristics of coal-rock compound under one-dimensional static and dynamic loads[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(10)：2 064-2 075.(in Chinese))
[16]	郭东明，左建平，张毅，等. 不同倾角煤岩组合体的强度与破坏机制研究[J]. 岩土力学，2011，32(5)：1 333-1 339.(GUO Dongming，ZUO Jianping，ZHANG Yi，et al. Research on strength and failure mechanism of deep coal-rock combination bodies of different inclined angles[J]. Rock and Soil Mechanics，2011，32(5)：1 333-1 339.(in Chinese))
[17]	张泽天，刘建锋，王璐，等. 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[J]. 煤炭学报，2012，37(10)：1 677-1 681. (ZHANG Zetian，LIU Jianfeng，WANG Lu，et al. Effects of combination mode on mechanical properties and failure characteristics of the coal-rock combinations[J]. Journal of China Coal Society，2012，37(10)：1 677-1 681.(in Chinese))
[18]	陈岩，左建平，魏旭，等. 煤岩组合体破坏行为的能量非线性演化特征[J]. 地下空间与工程学报，2017，13(1)：124-132.(CHEN Yan，ZUO Jianping，WEI Xu，et al. Energy nonlinear evolution characteristics of the failure behavior of coal-rock combined body[J]. Chinese Journal of Underground Space and Engineering，2017，13(1)：124-132.(in Chinese))
[19]	秦忠诚，陈光波，秦琼杰. 组合方式对煤岩组合体力学特性和冲击倾向性影响试验研究[J]. 西安科技大学学报，2017，37(5)：655-661.(QIN Zhongcheng，CHEN Guangbo，QIN Qiongjie. Effects of combination mode on mechanical properties and rock burst tendency of the coal-rock combinations[J]. Journal of Xi¢an University of Science and Technology，2017，37(5)：655-661.(in Chinese))
[20]	MARTIN C D. Seventeenth canadian geotechnical colloquium：the effect of cohesion loss and stress path on brittle rock strength[J]. Canadian Geotechnical Journal，1997，34(5)：698-725.
[21]	READ R S，CHANDLER N A，DZIK E J. In-situ strength criteria fortunnel design in highly-stressed rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，1998，35(3)：261-278.
[22]	杜坤，李夕兵，马春德. 岩石真三轴扰动诱变试验系统研制及应用[J]. 实验技术与管理，2014，31(12)：35-40.(DU Kun，LI Xibing，MA Chunde. Development and application of rock triaxial disturbance mutation test system[J]. Experimental Technology and Management，2014，31(12)：35-40.(in Chinese))
[23]	赵忠虎，谢和平. 岩石变形破坏过程中的能量传递与耗散[J]. 四川大学学报：工程科学版，2008，40(2)：26-31.(ZHAO Zhonghu，XIE Heping. Energy transfer and energy dissipation in rock deformation and fractur[J]. Journal of Sichuan University：Engineering Science，2008，40(2)：26-31.(in Chinese))