非贯通非共面节理岩体直剪试验DEM数值模拟

doi:10.13722/j.cnki.jrme.2014.1006

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Abstract

Direct shear test on non-coplanar intermittent jointed rock was simulated by DEM，where a zero-thickness bond model containing rolling resistance based on experimental data was implemented. The influences of joint inclination angle，normal stress and joint spacing on mechanics and failure behaviors of non-coplanar intermittent jointed rock were investigated from both the macroscopic and microscopic points of view. The simulated results show that the failure of non-coplanar intermittent jointed rock is initiated by the formation of wing cracks，which start from the existing joints caused by tension stress. With the increase of shear displacement，the wing cracks propagate along the direction of the maximum compressive stress and break through the rock bridge in the end. The peak shear stress increases with the increase of joint inclination angle and normal stress，but almost remains unchanged with the increase of joint spacing.

Key words： rock mechanics intermittent non-coplanar joints direct shear test numerical simulation failure mechanism

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	Articles by authors
	JIANG Mingjing1
	2
	3
	SUN Ya1
	2
	3
	CHEN He1
	2
	3
	YUAN Juyun3
	ZHANG Shungao4

Cite this article:

JIANG Mingjing1,2,3, et al. DEM NUMERICAL SIMULATION OF ROCK MASSES CONTAINING NON-COPLANAR INTERMITTENT JOINTS IN DIRECT SHEAR TEST[J]. , 2015, 34(S2): 3667-3675.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1006 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3667

[1]	LAJAIEZ. Shear strength of weakness planes in rock[J]. International Journal of Rock Mechanics and MiningSciences，1969，6(7)：499-515.
[2]	LAJAIEZ. Strength of discontinuous rocks in direct shear[J].Geotechnique，1969，19(2)：218-233 .
[3]	朱维申，梁作元，冯光北，等. 节理岩体强度特性的物理模拟及其强度预测分析[C]// 计算机方法在岩石力学及工程中的应用国际学术讨论文集.武汉：武汉测绘科技大学出版社，1994：486-493.(ZHU Weishen，LIANG Zuoyuan，FENG Guangbei，etal. Physics simulation and strength analysis and forecast for properties of joints rock mass[C]// Proceedings of International Symposium on Application for Computer Methods in Rock Mechanics and Engineering.Wuhan：Technical University of Surveying and Mapping Press，1994：486-493.(in Chinese))
[4]	白世伟，任伟中，丰定祥，等. 共面闭合非贯通岩体强度特性直剪试验研究[J]. 岩土力学，1999，20(2)：10-16.(BAI Shiwei，REN Weizhong，FENGDingxiang，et al.Research on the strength behaviour of rock containing coplanar close intermittent joints by direct shear test[J].Rock and Soil Mechanics，1999，20(2)：10-16.(inChinese))
[5]	SAVILAHTIT，NORDLUNDE，STEPHANSSONO. Shear box testing and modelling of joint bridges[C]//Proceedings of the International Symposium on Rock Joints. Norway：[s. n.]. 1990：295-300.
[6]	GEHLEC，KUTTERH K. Breakage and shear behaviour of intermittent rock joints[J]. International Journal of Rock Mechanics and Mining Sciences，2003，40(5)：687-700.
[7]	JIANG M J，YU H S，HAMISD. A novel discrete model for granular material incorporating rolling resistance[J]. Computers and Geotechnics，2005，32(5)：340-357.
[8]	JIANG M J，YU H S，HARRIS D. Bond rolling resistance and its effect on yielding of bonded granulates by DEM analyses[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2006，30(8)：723-761
[9]	蒋明镜，陈贺，刘芳. 岩石微观胶结模型及离散元数值仿真方法初探[J]. 岩石力学与工程学报，2013，32(1)：15-23.(JIANG Mingjing，CHENHe，LIUFang. A microscopic bond model for rock and preliminary study of numerical simulation method by distinct element method[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(1)：15-23.(in Chinese))
[10]	蒋明镜，白闰平，刘静德，等. 岩石微观颗粒接触特性的试验研究[J].岩石力学与工程学报，2013，32(6)：1121-1128.(JIANG Mingjing，BAI Runping，LIU Jingde，et al. Experimental study of inter-granular particles bonding behaviors for rock microstructure[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(6)：1121-1128.(in Chinese))
[11]	李贺，尹光志，许江，等.岩石断裂力学[M].重庆：重庆大学出版社，1988：2-6.(LI He，YIN Guangzhi，XU Jiang，et al. Rock fracture mechanics[M]. Chongqing：Chongqing University Press，1988：2-6.(in Chinese))
[12]	JIANG M J，SUN Y G，LI L Q，et al. Contact behavior of idealized granules bonded in different interparticle distances：An experimental investigation[J]. Mechanics and Materials，2012，55(14)：1-15.
[13]	JIANG M J，SUN Y G，XIAO Y. An experimental investigation on the contact behavior between cemented granules[J]. Geotechnical and Testing Journal，2012，35(5)：678-690
[14]	蒋明镜，孙渝刚，李立青. 胶结颗粒接触力学特性测试装置研制[J].岩土力学，2011，32(1)：309-315.(JIANG Mingjing，SUN Yugang，LI Liqing. Development of experimental apparatus for contact behavior ofbonded granules[J]. Rock and Soil Mechanics，2011，32(1)：309-315.(in Chinese))
[15]	蒋明镜，孙渝刚，李立青. 复杂应力下两种胶结颗粒微观力学模型的试验研究[J]. 岩土工程学报，2011，33(3)：354-360.(JIANG
	Mingjing，SUN Yugang，LI Liqing. Experimental study on micromechanical model for two different bonded granules under complex stress conditions[J]. Chinese Journal of Geotechnical Engineering，2011，33(3)：354-360.(in Chinese))
[16]	陈贺. 岩石宏微观力学特性及高陡岩质边坡的离散元数值模拟[硕士学位论文][D]. 上海：同济大学，2013.(CHEN He. Macro- and micro-mechanical behaviors of rock and simulation of high-steep rock slope by distinct element method[M. S. Thesis][D].Shanghai：Tongji University，2013.(in Chinese))
[17]	蒋明镜，陈贺. 含双裂隙岩石裂纹演化机制的离散元数值分析[J].岩土力学，2014 (待刊)(JIANG Mingjing，CHEN He.Distinct element analysis of crack evolution in rocks containing pre-existing double flaws[J]. Rock and Soil Mechanics，2014(to be pressed)).
[18]	GEHLE C. Bruch-und scherverhalten von gesteinstrnnflachen mit dazwischenliegenden materialbruchen[M. S. Thesis]. Bochum，Germany：University of Bochum，2002.