深部煤岩组合体整体破坏的非线性模型研究

左建平; 陈岩; 孙运江; 姜广辉; 王金涛

深部煤岩组合体整体破坏的非线性模型研究

1.
中国矿业大学(北京)力学与建筑工程学院,北京100083;2.煤炭资源与安全开采国家重点实验室,北京100083

基金项目: 国家自然科学基金(51622404,51374215,11572343);"十三五"国家重点研发计划(2016YFC0801404);霍英东教育基金会第十四届高等院校青年教师基金应用课题(142018);北京市科委重大科技成果转化落地培育项目(Z151100002815004);"万人计划"青年拔尖人才项目

详细信息

作者简介:
左建平(1978—),男,江西高安人,教授,博士生导师,主要从事裂隙岩体破坏力学及本构理论等方面的研究。

中图分类号: TD313
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出版历程
- 收稿日期: 2016-07-05
- 刊出日期: 2017-02-15

Investigation on whole failure nonlinear model for deep coal-rock combined bodies

1.
School of Mechanics and Civil Engineering,China University of Mining and Technology,Beijing 100083,China;2.State Key Laboratory of Coal Resources and Safe Mining,Beijing 100083,China

摘要

摘要: 煤是一种复杂的地质体,其内部具有大量的微裂隙及孔隙。煤岩组合体中,岩石为较硬的部分,煤及其内部微裂隙、孔隙及岩-煤之间的界面共同组成较软的部分。根据工程应变和自然应变(真实应变),建立了表征煤岩组合体的非线性理论模型。该理论模型与煤岩组合体的单轴压缩试验数据吻合度较好。对该理论模型进行简化并对参数进行了讨论,发现参数a约等于1;参数b、参数c与煤样尺寸、弹性模量有关,参数b越大,非线性段逐渐延长,且增大速率基本保持不变;参数c越大,非线性段同样逐渐增长,但是增大速率逐渐减小,并且随着轴向荷载的增加,线性段逐渐重合。
- 岩石力学 /
- 煤岩组合体 /
- 裂隙 /
- 非线性 /
- 工程应变 /
- 自然应变
Abstract: Coal is a kind of complex geological body with a large number of cracks and pores.In the coal-rock combined bodies,rocks are the hard part and coal and its internal cracks,pores and the interface between coal and rock are put together to be the soft parts.According to the engineering strain and natural strain,a nonlinear theoretical model has been built to characterize the coal-rock combined bodies.This nonlinear theoretical model generally matches well with the uniaxial compression testing data.Then parameters are discussed by the simplified model and finding that,a is approximately equal to 1,b and c are the parameters that associated with size,elastic modulus of coal.Parameter b extends gradually in the nonlinear phase and the incremental rate basically remains unchanged.Parameter c also goes up increasingly in the nonlinear phase.The incremental rate decreases with a gradual overlap trend in the linear phase when the axial load increases.
- rock mechanics /
- coal-rock combined body /
- crack /
- nonlinear /
- engineering strain /
- natural strain

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参考文献(26)

[1]	钱鸣高.煤炭的科学开采[J].煤炭学报,2010,35(4):529-534.
[2]	Qian Minggao.On sustainable coal mining in China[J].Journal of China Coal Society,2010,35(4):529-534.
[3]	谢和平,王金华,申宝宏,等.煤炭开采新理念——科学开采与科学产能[J].煤炭学报,2012,37(7):1069-1079.
[4]	Xie Heping,Wang Jinhua,Shen Baohong,et al.New idea of coal mining:scientific mining and sustainable mining capacity[J].Journal of China Coal Society,2012,37(7):1069-1079.
[5]	谢和平,高峰,鞠杨.深部岩样力学研究与探索[J].岩石力学与工程学报,2015,34(11):2161-2178.
[6]	Xie Heping,Gao Feng,Ju Yang.Research and development of rock mechanics in deep ground engineering[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(11):2161-2178.
[7]	姜耀东,赵毅鑫.我国煤矿冲击地压的研究现状:机制、预警与控制[J].岩石力学与工程学报,2015,34(11):2188-2204.
[8]	Jiang Yaodong,Zhao Yixin.State of the art:investigation on mechanism,forecast and control of coal bumps in China[J].Chinese Journal of Rock Mechanics and Engineering,2015,34(11):2188-2204.
[9]	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):2064-2075.
[10]	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):2064-2075.
[11]	唐春安.岩石破裂过程中的灾变[M].北京:煤炭工业出版社,1993.
[12]	曹文贵,张升,赵明华.软化与硬化特性转化的岩石损伤统计本构模型之研究[J].工程力学,2006,23(11):110-115.
[13]	Cao Wengui,Zhang Sheng,Zhao Minghua.Study on a statistical damage constitutive model with conversion between softening and hardening properties of rock[J].Engineering Mechanics,2006,23(11):110-115.
[14]	Zuo Jianping,Wang Zhaofeng,Zhou Hongwei,et al.Failure behavior of a rock-coal-rock combined body with a weak coal interlayer[J].International Journal of Mining Science and Technology,2013,23(6):907-912.
[15]	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.
[16]	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):1287-1296.
[17]	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与力学特性研究[J].岩石力学与工程学报,2011,30(1):84-92.
[18]	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.
[19]	左建平,裴建良,刘建锋，等.煤岩样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.
[20]	Zuo Jianping,Pei Jianliang,Liu Jianfeng,et al.Investigation on acoustic emission behavior and its timespace evolution mechanism in failure process of coal-rock combined body[J].Chinese Journal of Rock Mechanics and Engineering,2011,30(8):1564-1570.
[21]	左建平,陈岩,张俊文,等.不同围压作用下煤岩组合体破坏行为及强度特征[J].煤炭学报,2016,41(11):2706-2713.
[22]	Zuo Jianping,Chen Yan,Zhang Junwen,et al.Failure behavior and strength characteristics of coalrock combined body under different confining pressure[J].Journal of China Coal Society,2016,41(11):2706-2713.
[23]	Liu H H,Rutqvist J,Berryman J G.On the relationship between stress and elastic strain for porous and fractured rock[J].International Journal of Rock Mechanics and Mining Sciences,2009,46(2):289-296.
[24]	Liu H H,Rutqvist J,Birkholzer J T.Constitutive relationships for elastic deformation of clay rock:data analysis[J].Rock Mechanics and Rock Engineering,2011,44(4):463-468.
[25]	李连崇,Liu Huihai,赵瑜.基于双应变胡克模型的岩石非线性弹性行为分析[J].岩石力学与工程学报,2012,31(10):2119-2126.
[26]	Li Lianchong,Liu Huihai,Zhao Yu.Investigation on nonlinear elastic behavior of rocks based on a two-part hooke’s model[J].Chinese Journal of Rock Mechanics and Engineering,2012,31(10):2119-2126.

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深部煤岩组合体整体破坏的非线性模型研究

作者简介:
左建平(1978—),男,江西高安人,教授,博士生导师,主要从事裂隙岩体破坏力学及本构理论等方面的研究。

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Investigation on whole failure nonlinear model for deep coal-rock combined bodies

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目录

留言板

深部煤岩组合体整体破坏的非线性模型研究

作者简介: 左建平(1978—),男,江西高安人,教授,博士生导师,主要从事裂隙岩体破坏力学及本构理论等方面的研究。

计量

出版历程

Investigation on whole failure nonlinear model for deep coal-rock combined bodies

计量

出版历程

目录

作者简介:
左建平(1978—),男,江西高安人,教授,博士生导师,主要从事裂隙岩体破坏力学及本构理论等方面的研究。