含预制裂隙大理岩SHPB动态力学破坏特性试验研究

doi:10.13722/j.cnki.jrme.2017.0488

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Abstract In order to study the effect of the angle of flaws at the end surface on the dynamic properties of and crack propagation in rock，cylindrical marble specimens of 50 mm×50 mm were manufactured with flaws of different angles. A series of impact loading tests were carried out with a system of split Hopkinson pressure bar(SHPB) with the diameter of 50 mm. The crack propagation and dynamic failure processes were recorded real-timely by a high speed camera. The results show that the dynamic parameters of the marble including the dynamic compressive strength，peak strain and dynamic elastic modulus，decrease first and then increase with the increasing of angles of prefabricated flaw. The cracks initiate almost from or near the tip of flaw and the initiation cracks belong to type II or combined type I-II. The crack initiation angle shows an M-shaped tendency and the crack initiation stress shows a W-shaped tendency with the increase of the flaw angle. The splitting tensile failure is usually observed in the marble specimen intact or with flaw having angle of 90°. The combined tensile-shear failure occurred mainly in the specimen with flaw angle of 45° and the shear failure in specimens with flaw angles of 30° and 60°. The crack propagation characteristics on both sides of the critical angle are rather symmetric. The energy absorption ratio increases first and then decreases with the increasing of the flaw angle. When the end flaw has an appropriate angle to the loading surface，the energy absorption ratio is the largest，indicating that the efficiency of rock breaking can be improved effectively by setting an appropriate flaw angle at the end surface.

Key words： rock mechanics SHPB marble flaw angle crack propagation failure mode energy dissipation

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	Articles by authors
	LI Diyuan
	HAN Zhenyu
	SUN Xiaolei
	LI Xibing

Cite this article:

LI Diyuan,HAN Zhenyu,SUN Xiaolei, et al. Characteristics of dynamic failure of marble with artificial flaws under split Hopkinson pressure bar tests[J]. , 2017, 36(12): 2872-2883.

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.0488 OR http://www.rockmech.org/EN/Y2017/V36/I12/2872

[2]	YANG S Q，DAI Y H，HAN L J，et al. Experimental study on mechanical behavior of brittle marble samples containing different flaws under uniaxial compression[J]. Engineering Fracture Mechanics，2009，76(12)：1 833-1 845. " target="_blank">
[6]	苏海健，靖洪文，赵洪辉，等. 纵向裂隙对砂岩力学特性影响试验研究[J]. 采矿与安全工程学报，2014，31(4)：644-649.(SU Haijian，JING Hongwen，ZHAO Honghui，et al. Experimental study on the influence of longitudinal fissure on mechanics characteristic of sandstone[J]. Journal of Mining and Safety Engineering，2014，31(4)：644-649.(in Chinese))
[19]	QIU J D，LI D Y，LI X B. Dynamic failure of a phyllite with a low degree of metamorphism under impact Brazilian test[J]. International Journal of Rock Mechanics and Mining Sciences，2017，94：10-17. " target="_blank">
[24]	王文星. 岩体力学[M]. 长沙：中南大学出版社，2009：6-7.(WANG Wenxing. Rock mass mechanics[M]. Changsha：Central South University Press，2009：6-7.(in Chinese)) " target="_blank">
[1]	李地元，成腾蛟，周韬，等. 冲击载荷作用下含孔洞大理岩动态力学破坏特性试验研究[J]. 岩石力学与工程学报，2015，34(2)：249-260.(LI Diyuan，CHENG Tengjiao，ZHOU Tao，et al. Experimental study of the dynamic strength and fracturing characteristics of marble specimens with a single hole under impact loading[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(2)：249-260.(in Chinese))
[5]	YANG S Q，JING H W，XU T. Mechanical behavior and failure analysis of brittle sandstone specimens containing combined flaws under uniaxial compression[J]. Journal of Central South University，2014，21(5)：2 059-2 073. " target="_blank">
[16]	ZHOU Z L，LI D Y，MA G W，et al. Failure of rock under dynamic compressive loading[J]. Journal of Central South University，2008，15(3)：339-343. " target="_blank">
[21]	DAI F，CHEN R，XIA K W. A dynamic CCNBD method for measuring dynamic fracture parameters[J]. Dynamic Behavior of Materials，2011，(1)：39-48. " target="_blank">
[12]	李地元，李夕兵，李春林，等. 单轴压缩下含预制孔洞板状花岗岩试样力学响应的试验和数值研究[J]. 岩石力学与工程学报，2011，30(6)：1 198-1 206.(LI Diyuan，LI Xibing，LI Chunlin，et al. Experimental and numerical studies of mechanical response of plate-shape granite samples containing prefabricated holes under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(6)：1 198-1 206.(in Chinese))
[20]	ZHOU Y X，XIA K W，LI X B，et al. Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials[J]. International Journal of Rock Mechanics and Mining Sciences，2012，49(1)：105-112. " target="_blank">
[7]	林鹏，黄凯珠，王仁坤，等. 不同角度单裂纹缺陷试样的裂纹扩展与破坏行为[C]// 中国岩石力学与工程学会2005年边坡、基坑与地下工程新技术新方法研讨会. [S. l.]：[s. n.]，2005：5 652- 5 657.(LIN Peng，HUANG Kaizhu，WANG Renkun，et al. Crack growth mechanism and failure behavior of specimen containing single flaw with different angles[C]// Chinese Society of Rock Mechanics and Engineering 2005 New Technology and New Method Work shop on Slope，Foundation Pit and Underground Engineering. [S. l.]：[s. n.]，2005：5 652-5 657.(in Chinese)) " target="_blank">
[8]	FUJII Y，ISHIJIMA Y. Consideration of fracture growth from an inclined slit and inclined initial fracture at the surface of rock and mortar in compression[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(6)：1 035-1 041. " target="_blank">
[10]	WONG R H C，CHAU K T，TANG C A，et al. Analysis of crack coalescence in rock-like materials containing three flaws—Part I：experimental approach[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(7)：909-924. " target="_blank">
[13]	王卫华，李坤，王小金，等. SHPB加载下含不同倾角裂隙的类岩石试样力学特性[J]. 科技导报，2016，34(18)：246-250.(WANG Weihua，LI Kun，WANG Xiaojin，et al. Experimental study of mechanical properties of rocklike specimens containing single cracks of different inclination angles under SHPB loading[J]. Science and Technology Review，2016，34(18)：246-250.(in Chinese))
[14]	LI X B，LOK T S，ZHAO J. Dynamic characteristics of granite subjected to intermediate loading rate[J]. Rock Mechanics and Rock Engineering，2005，38(1)：21-39.
[15]	LI X B，ZHOU T，LI D Y. Dynamic strength and fracturing behavior of single-flawed prismatic marble specimens under impact loading with a split Hopkinson pressure bar[J]. Rock Mechanics and Rock Engineering，2016，50(1)：1-16. " target="_blank">
[3]	杨圣奇，刘相如，李玉寿. 单轴压缩下含孔洞裂隙砂岩力学特性试验分析[J]. 岩石力学与工程学报，2012，31(增2)：3 539-3 546. (YANG Shengqi，LIU Xiangru，LI Yushou. Experimental analysis of mechanical behavior of sandstone containing hole and fissure under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.2)：3 539-3 546.(in Chinese))
[4]	杨圣奇，戴永浩，韩立军，等. 断续预制裂隙脆性大理岩变形破坏特性单轴压缩试验研究[J]. 岩石力学与工程学报，2009，28(12)：2 391-2 404.(YANG Shengqi，DAI Yonghao，HAN Lijun，et al. Uniaxial compression experimental research on deformation and failure properties of brittle marble specimen with pre-existing fissures[J]. Chinese Journal of Rock Mechanics and Engineering， 2009，28(12)：2 391-2 404.(in Chinese))
[11]	TANG C A，LIN P，WONG R，et al. Analysis of crack coalescence in rock-like materials containing three flaws-Part II：numerical approach[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(7)：925-939. " target="_blank">
[9]	WONG R H C，CHAU K T. Crack coalescence in a rock-like material containing two cracks[J]. International Journal of Rock Mechanics and Mining Sciences，1998，35(2)：147-164. " target="_blank">
[17]	张平，李宁，贺若兰，等. 动载下两条断续预制裂隙贯通机制研究[J]. 岩石力学与工程学报，2006，25(6)：1 210-1 217.(ZHANG Ping，LI Ning，HE Ruolan，et al. Mechanism of fracture coalescence between two pre-existing flaws under dynamic loading[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(6)：1 210- 1 217.(in Chinese))
[22]	李夕兵，周子龙，叶州元，等. 岩石动静组合加载力学特性研究[J]. 岩石力学与工程学报，2008，27(7)：1 387-1 395.(LI Xibing，ZHOU Zilong，YE Zhouyuan，et al. Study of rock mechanical characteristics under coupled static and dynamic loads[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(7)：1 387-1 395.(in Chinese))
[23]	李夕兵. 岩石动力学基础与应用[M]. 北京：科学出版社，2014：18-38.(LI Xibing. Rock dynamics fundamentals and applications[M]. Beijing：Science Press，2014：18-38.(in Chinese)) " target="_blank">
[25]	李贺. 岩石断裂力学[M]. 重庆：重庆大学出版社，1988：66-84.(LI He. Rock fracture mechanics[M]. Chongqing：Chongqing University Press，1988：66-84.(in Chinese)) " target="_blank">
[26]	刘伟韬，申建军. 含单裂纹真实岩石试件断裂模式的力学试验研究[J]. 岩石力学与工程学报，2016，35(6)：1 182-1 189.(LIU Weitao，SHEN Jianjun. Experimental study of propagation mode of crack in real rock specimens with a single crack[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(6)：1 182-1 189.(in Chinese))
[18]	李地元，邱加冬，李夕兵. 冲击载荷作用下层状砂岩动态拉压力学特性研究[J]. 岩石力学与工程学报，2015，34(10)：2 091-2 097.(LI Diyuan，QIU Jiadong，LI Xibing. Experimental study on dynamic tensile and compressive properties of bedding sandstone under impact loading[J].Chinese Journal of Rock Mechanics and Engineering，2015 34(10)：2 091-2 097.(in Chinese))
[27]	李地元，李夕兵，李春林. 压应力作用下硬岩板裂裂纹形成的微观断裂分析[C]// 岩石力学与工程的创新和实践：第十一次全国岩石力学与工程学术大会论文集. [S. l.]：[s. n.]，2010.(LI Diyuan，LI Xibing，LI Chunlin. Micro fracture analysis for formation of spalling fractures in hard rocks under compressive stress[C]// Innovation and Practice of Rock Mechanics and Engineering：Proceedings of the Eleventh National Conference on Rock Mechanics and Engineering. [S. l.]：[s. n.]，2010.(in Chinese)) " target="_blank">
[28]	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)：3 003- 3 010.(XIE Heping，JU Yang，LI Liyun. Criteria for strength and structural failure of rocks based on energy dissipation and energy release principles[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(17)：3 003-3 010.(in Chinese))