预制裂隙类岩石材料板动态压缩破坏试验研究

doi:10.13722/j.cnki.jrme.2018.0746

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1395 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要采用水泥砂浆制作类岩石样品，预制与加载方向成0°～90°夹角裂隙，以霍普金森杆(SHPB)为动力加载系统，结合数字图像相关(DIC)技术，分析多加载率、单裂纹多角度条件下样品失稳破坏特征。结果表明，含预制裂纹样品破坏形式主要以X型拉剪破坏为主，其强度随加载率的增大而增大，裂纹角度变化也对样品强度有一定影响。同时也捕捉了预制裂纹的初始应力场、裂纹萌生起裂全过程，并分析不同加载率、不同节理角度下复合裂纹动态起裂韧度与经典准则的相关性。试验成果对分析含节理裂隙的真实岩体破坏失稳机制有重要的参考价值。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	王奇智1
	2
	吴帮标1
	2
	刘丰1
	2
	夏开文1
	2
	王伟3

关键词 ：岩石力学, 类岩石材料, 预制裂纹, 动态破坏, 分离式霍普金森压杆, 数字图像相关

Abstract：A cement mortar plate containing a single flaw was used to simulate the rock mass. The flaw in each sample has an angle with respect to the loading direction from 0° to 90°. A modified split Hopkinson pressure bar (SHPB) system was used to carry out the dynamic compression test to the plate specimen and a high-speed imaging system was used to record the crack propagation under different loading rates. The surface of the plate specimen was coated with a speckle pattern and the digital image correlation(DIC) technique was adopted to analyze the characteristics of the fracturing process. The testing results indicate that the failure of the cemented mortar plate with a single flaw is mainly the X type and the strength of the specimen increases with the loading rate under a given orientation of flaw. The orientation of the flaw is the main factor influencing the strength of specimens. The shear cracks and tensile cracks were observed to be the dominant crack types. The crack propagation path，stress field，crack initiation and propagation process were also analyzed with the DIC method. The correlation between the dynamic initiation fracture toughness and the classical criterion of mixed cracks under different loading rates and different joint angles was analyzed.

Key words： rock mechanics simulated rock mass pre-existing flaw dynamic fracture split Hopkinson pressure bar(SHPB) digital image correlation(DIC)

引用本文:

王奇智1，2，吴帮标1，2，刘丰1，2，夏开文1，2，王伟3. 预制裂隙类岩石材料板动态压缩破坏试验研究[J]. 岩石力学与工程学报, 2018, 37(11): 2489-2497.
WANG Qizhi1，2，WU Bangbiao1，2，LIU Feng1，2，XIA Kaiwen1，2，WANG Wei3. Dynamic failure of manufactured similar rock plate containing a single fissure. , 2018, 37(11): 2489-2497.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2018.0746 或 http://www.rockmech.org/CN/Y2018/V37/I11/2489

[2]	DOAN M L，GARY G. Rock pulverization at high strain rate near the San Andreas fault[J]. Nature Geoscience，2009，2(2)：709.
[5]	刘远明，夏才初. 共面闭合非贯通节理岩体贯通机制和破坏强度准则研究[J]. 岩石力学与工程学报，2006，25(10)：2 086-2 091.(LIU Yuanming，XIA Caichu. Study on fracture mechanism and criteria of failure strength of rock mass containing coplanar close discontinuous joints under direct shear[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(10)：2 086-2 091.(in Chinese))
[7]	LEI J，WANG Y S，GROSS D. Two-dimensional numerical simulation of crack kinking from an interface under dynamic loading by time domain boundary element method[J]. International Journal of Solids and Structures，2007，44(3/4)：996-1 012.
[15]	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 Rock Mechanics and Engineering，2009，28(8)： 1 691-1 696.(in Chinese))
[17]	DAI F，CHEN R，IQBAL M J，et al. Dynamic cracked chevron notched Brazilian disc method for measuring rock fracture parameters[J]. International Journal of Rock Mechanics and Mining Sciences，2010，47(4)：606-613.
[25]	GAO G，HUANG S，XIA K，et al. Application of digital image correlation(dic) in dynamic notched semi-circular bend(NSCB) tests[J]. Experimental Mechanics，2015，55(1)：95-104.
[27]	GAO G，YAO W，XIA K，et al. Investigation of the rate dependence of fracture propagation in rocks using digital image correlation(DIC) method[J]. Engineering Fracture Mechanics，2015，138(1)：146-155.
[29]	LIU F，ZHENG H，DU X. Hybrid analytical and mls-based nmm for the determination of generalized stress intensity factors[J]. Mathematical Problems in Engineering，2015，(1)：1-9.
[3]	LI H B，LI T J，ZHAO J，et al. Study on strength of rock material under dynamic triaxial compressive loads based on sliding crack model[J]. Key Engineering Materials，2000，183-187：67-72.
[10]	ALAM M R，SWAMIDAS A S J，MUNASWAMY K. Experimental and numerical studies on dynamic crack growth in layered slate rock under wedge impact loads：part I—plane strain problem[J]. Fatigue and Fracture of Engineering Materials and Structures，2007，30(9)：844-862.
[13]	ZHU Z D，NI X H，WANG W，et al. Dynamic experimental study on rock meso-cracks growth by digital image processing technique[J]. Journal of Central South University of Technology，2008，15(Supp.2)：114-120.
[20]	WANG Q Z，FENG F，NI M，et al. Measurement of mode I and mode II rock dynamic fracture toughness with cracked straight through flattened Brazilian disc impacted by split Hopkinson pressure bar[J]. Engineering Fracture Mechanics，2011，78(12)：2 455-2 469.
[23]	ZOU C，WONG L N Y. Experimental studies on cracking processes and failure in marble under dynamic loading[J]. Engineering Geology，2014，173(5)：19-31.
[30]	SIH G C. Strain-energy-density factor applied to mixed mode crack problems[J]. International Journal of Fracture，1974，10(3)：305- 321.
[8]	LEI J，WANG Y S，HUANG Y F，et al. Dynamic crack propagation in matrix involving inclusions by a time-domain BEM[J]. Engineering Analysis with Boundary Elements，2012，36(5)：651-657.
[18]	DAI F，XIA K，ZHENG H，et al. Determination of dynamic rock Mode-I fracture parameters using cracked chevron notched semi-circular bend specimen[J]. Engineering Fracture Mechanics，2011，78(15)：2 633-2 644.
[28]	DAI X，HE X，SHAO X，et al. Real-time 3D digital image correlation method and its application in human pulse monitoring[J]. Applied Optics，2016，55(4)：696-704.
[1]	钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报，2012，31(10)：1 945-1 956.(QIAN Qihu. Challenges faced by underground projects construction safety and countermeasures[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(10)：1 945-1 956.(in Chinese))
[4]	TENG C K，LI S Y，HE X S，et al. An experiment study on dynamic fracture process of the crack system in rocks[J]. Chinese Journal of Geophysics，2001，44(Z1)：136-145.
[6]	LEI J，WANG Y S，GROSS D. Analysis of dynamic interaction between an inclusion and a nearby moving crack by BEM[J]. Engineering Analysis with Boundary Elements，2005，29(8)：802-813.
[9]	潘鹏志，丁梧秀，冯夏庭，等. 预制裂纹几何与材料属性对岩石裂纹扩展的影响研究[J]. 岩石力学与工程学报，2008，27(9)：1 882- 1 889.(PAN Pengzhi，DING Wuxiu，FENG Xiating，et al. Research on influence of pre-existing crack geometrical and material properties on crack propagation in rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(9)：1 882-1 889.((in Chinese))
[11]	ALAM M R，MUNASWAMY K，SWAMIDAS A S J. Experimental and numerical studies on dynamic crack growth in layered slate rock under wedge impact loads：part II—non-plane strain problem[J]. Fatigue and Fracture of Engineering Materials and Structures，2007，30(10)：915-931.
[12]	DING W X，FENG X T. Study on the dynamic fracture process and fracture law of cracks rock under the coupled mechanical- hydraulic-chemical environment[C]// International Conference on Heterogeneous Material Mechanics(ICHMM). [S.l.]：[s.n.]，2008，2008：1 052-1 056.
[14]	赵永红. 受单轴压缩大理岩填充割缝周围的微裂纹生长[J]. 岩石力学与工程学报，2004，23(15)：2 504-2 509.(ZHAO Yonghong. Mini-crack development from a cemented fracture in marble specimen under uniaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2004，23(15)：2 504-2 509.(in Chinese))
[16]	WANG Q Z，ZHANG S，XIE H P. Rock dynamic fracture toughness tested with holed-cracked flattened brazilian discs diametrically impacted by shpb and its size effect[J]. Experimental Mechanics，2010，50(7)：877-885.
[19]	DAI F，XIA K. Characterization of dynamic rock fracture parameters using Notched Semi-Circular Bend(NSCB) method and Cracked Chevron Notched Brazilian Disc(CCNBD) method[C]// The 12th ISRM International Congress on Rock Mechanics. [S.l.]：[s.n.]，2011，17-21.
[21]	WANG Q Z，YANG J R，ZHANG C G，et al. Determination of dynamic crack initiation and propagation toughness of a rock using a hybrid experimental-numerical approach[J]. Journal of Engineering Mechanics，2016，142(12)：04016097.
[22]	TANG C A，YANG Y F. Crack branching mechanism of rock-like quasi-brittle materials under dynamic stress[J]. Journal of Central South University，2012，19(11)：3 273-3 284.
[24]	ZOU C，WONG L N Y，JIN J L，et al. Different mechanical and cracking behaviors of single-flawed brittle gypsum specimens under dynamic and quasi-static loadings[J]. Engineering Geology，2016，201(4)：71-84.
[26]	GAO G Y，ZHOU J，LI Z. Experimental investigation of dynamic fracture behaviors of polymethyl methacrylate[J]. Macromolecular Symposia，2016，365(1)：180-190.