中心孔径对岩石动态断裂韧度测试值的影响

doi:10.13722/j.cnki.jrme.2014.1404

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Abstract In order to study the influence on determining rock dynamic fracture toughness accurately with center hole，some 80 mm diameter marble specimens of Holed-cracked flattened Brazilian disc(HCFBD) with different diameter of center hole were performed in the split Hopkinson pressure bar system. The results showed that the average rock dynamic fracture toughness was 4.57 MPa•m1/2 as the dimensionless diameter of center hole r0/R∈(0.10，0.30). There was not obvious change for the test results of dynamic fracture toughness with different diameter of center hole，but there were a certain differences about specimen fracture patterns. When the center hole diameter was small，there were more secondary cracks in the process of the main crack extension. However，there were more obvious macro transfixion fracture and less secondary cracks with the increase of the center hole diameter. Which provides an important significance to promote the method of determining rock dynamic fracture toughness with Holed-cracked flattened Brazilian disc and to reveal the rock fracture characteristics under dynamic impact.

Key words： rock mechanics disc specimen dynamic stress intensity factor rock dynamic fracture toughness center hole diameter marble

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http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2014.1404 OR http://www.rockmech.org/EN/Y2015/V34/I08/1660

[2]	郑颖人，肖强，叶海林，等. 地震隧洞稳定性分析探讨断[J]. 岩石力学与工程学报，2010，29(6)：1 081-1 088.(ZHENG Yinren，XIAO Qing，YE Hailin，et al. Rockburst and its criteria and control[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(6)： 1 081-1 088.(in Chinese)) " target="_blank">
[1]	王观石，胡世丽，李贵荣，等. 爆破地震波在结构面的传播特性与结构面倾角判断[J]. 岩石力学与工程学报，2010，29(9)：1 790- 1 798.(WANG Guanshi，HU Shili，LI Guirong，et al. Transmission attributes of blasting seismic wave in interface and judgement of interface obliquity[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(9)：1 790-1 798.(in Chinese)) " target="_blank">
[3]	张镜剑，傅冰骏. 岩爆及其判据和防治[J]. 岩石力学与工程学报，2008，27(10)：2 034-2 042.(ZHENG Jingjian，FU Bingjun. Study of tunnel stability analysis with seismic load[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(10)：2 034-2 042.(in Chinese)) " target="_blank">
[4]	HAVENITH H B，VANINI M，JONGMANS D. Initiation of earthquake-induced slope failure：influence of topographical and other site specific amplification effects[J]. Journal of Seismology，2003，7(3)：397-412.
[8]	单仁亮，薛友松，张倩. 岩石动态破坏的时效损伤本构模型[J]. 岩石力学与工程学报，2003，22(11)：1 771-1 776.(SHAN Renliang，XUE Yousong，ZHANG Qian. Time dependent damage model of rock under dynamic loading[J]. Chinese Journal of Applied Mechanics，2003，22(11)：1 771-1 776.(in Chinese)) " target="_blank">
[15]	冯峰，韦重耕，王启智. 用中心直裂纹平台巴西圆盘测试岩石动态断裂韧度的尺寸效应[J]. 工程力学，2009，26(4)：167-173. (FENG Feng，WEI Chonggeng，WANG Qizhi. Size effect for rock dynamic fracture toughness tested with cracked straight through flattened Brazilian disc[J]. Engineering mechanics，2009，26(4)：167-173.(in Chinese))
[7]	李夕兵，刘德顺.岩石冲击动力学[M]. 长沙：中南工业大学出版社，1994.(LI Xibing，LIU Deshun. Rock impact mechanics[M]. Changsha：Central South University of Technology Press，1994.(in Chinese)) " target="_blank">
[11]	WANG Q Z， JIA X M. The flattened Brazilian disc specimen used for testing elastic modulus，tensile strength and fracture toughness of brittle rocks：analytical and numerical results[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41：245-253. " target="_blank">
[5]	刘传雄，李玉龙，吴子燕，等. 混凝土材料的动态压缩破坏机理及本构关系[J]. 振动与冲击，2011，30(5)：1-5.(LIU Chuanxiong，LI Yulong，WU Zhiyan，et al. Failure mechanism and constitutive model of a concrete material under dynamic compressive loads[J]. Journal of Vibration and Shock，2011，30(5)：1-5.(in Chinese))
[6]	宋小林，谢和平，王启智. 大理岩的高应变率动态劈裂试验[J].应用力学学报，2005，22(3)：419-425.(SONG Xiaolin，XIE Heping，WANG Qizhi. High strain rate dynamic split tests of marble[J]. Chinese Journal of Applied Mechanics，2005，22(3)：419-425.(in Chinese)) " target="_blank">
[10]	TANG T X，BAZANT ZP，YANG SC，et al. Variable-notch one-size test method for fracture energy and process zone length[J]. Engineering Fracture Mechanics，1996，55(3)：383-404. " target="_blank">
[9]	李伟，谢和平，王启智. 大理岩动态劈裂拉伸的SHPB实验研究.爆炸与冲击，2006，26(1)：12-20(LI Wei，XIE Heping，WANG Qizhi. An experimental study for the dynamic split tension of marble disc using SHPB[J]. Explosion and Shock Waves，2006，26(1)：12-20(in Chinese)) " target="_blank">
[12]	周君，汪洋，董世明，等. 纯I型加载条件下有机玻璃中心切口圆盘断裂的尺寸相关性[J]. 高分子材料科学与工程，2005，21(6)：11-14.(ZHOU Jun，WANG Ying，DONG Shiming，et al. Effect of specimen geometry on mode I fracture toughness of PMMA[J]. polymer materials science and engineering，2005，21(6)：11-14.(in Chinese)) " target="_blank">
[13]	张盛，王启智，梁亚磊. 裂缝长度对岩石动态断裂韧度测试值影响的研究[J]. 岩石力学与工程学报，2009，28(8)：1 691-1 696. (ZHANG Sheng，WANG Qizhi，LIANG Yalei. Research on influence of crack length on test values of rock dynamic fracture toughness[J]. Chinese Journal of Applied Mechanics，2009，28(8)：1 691-1 396.(in Chinese)) " target="_blank">
[14]	张盛. 用圆盘类试件研究岩石的动态断裂韧度等力学参数[D]. 成都：四川大学，2007.(ZHANG Sheng. Research on rock dynamic fracture toughness and other mechanical parameters using various types of disc samples[D]. Chengdu：Sichuan university，2007.(in Chinese)) " target="_blank">