平行双裂缝圆盘试样裂纹扩展过程的尺寸效应试验研究

doi:10.13722/j.cnki.jrme.2021.1113

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摘要针对含多条裂缝不同尺寸的岩石受载时内部裂纹扩展及贯通存在尺寸效应的问题，制作了直径分别为50，100，150和200 mm的平行双裂缝砂岩圆盘试样，其厚度、裂缝长度和裂缝间距随直径等比变化。在GCTS RTX–3000试验机上对圆盘试样进行静态加载试验，采用声发射(acoustic emission，AE)和数字图像相关(digital image correlation，DIC)技术对试样的裂纹扩展过程进行监测。结果表明：随试样尺寸的增加，破坏载荷呈线性增长趋势，预制裂缝对试样承载能力的削弱作用增强，试样破坏单位体积消耗的能量逐渐减小；多裂纹扩展存在相互竞争机制，裂纹的起裂顺序决定着扩展方向，直径50，100和200 mm的试样裂纹扩展具有同方向性，直径150 mm的试样裂纹相向扩展；通过AE准确反映了试样内部的损伤演化过程，运用DIC技术将裂纹扩展过程数值化，能够精确分析裂纹的张开位移和扩展速度；不同尺寸试样裂纹扩展速度的变化规律相似，即裂纹以一个较低的初速度开始扩展，并在很短的距离内达到峰值速度，之后扩展速度急剧下降，末段裂纹扩展速度缓慢减小并趋于稳定。

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	张旭龙1
	张盛1
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	安定超1
	陈召1
	王峥1

关键词 ：岩石力学, 平行双裂缝, 损伤演化, 数字图像相关法, 裂纹扩展速度, 尺寸效应

Abstract：In view of the size effect of internal crack propagation and penetration when rocks of different sizes containing multiple flaws are loaded，sandstone disk samples with diameters of 50，100，150 and 200 mm containing parallel double flaws were made. Their thickness，flaw length and flaw spacing change in proportion to the diameter. Static loading tests were carried out on disc samples on GCTS RTX–3000 testing machine，and the crack propagation process of the samples was monitored by comprehensively using acoustic emission(AE) and digital image correlation(DIC) technology. The results show that with the increase of the sample size，the failure load increases linearly，the weakening effect of prefabricated flaws on the bearing capacity of the samples is enhanced，and the energy consumed per unit volume of sample failure decreases gradually. There is a competitive relationship between multiple crack propagation. The crack initiation sequence determines the propagation direction. The crack propagation of samples with diameters of 50，100 and 200 mm has the same direction. Cracks expand in opposite directions of samples with diameter of 150 mm. AE can accurately reflect the damage evolution process inside the sample. Using DIC technology to digitize the crack propagation process，the crack opening displacement and propagation speed can be accurately analyzed. The variation law of crack propagation speed of samples with different sizes is similar，that is，the crack starts to grow at a low initial speed and reaches a peak speed within a short distance，then the propagation speed drops sharply，and the final crack propagation speed decreases slowly and tends to be stable.

Key words： rock mechanics parallel double flaws damage evolution digital image correlation crack growth rate size effect

引用本文:

张旭龙1，张盛1，2，安定超1，陈召1，王峥1. 平行双裂缝圆盘试样裂纹扩展过程的尺寸效应试验研究[J]. 岩石力学与工程学报, 2023, 42(1): 115-128.
ZHANG Xulong1，ZHANG Sheng1，2，AN Dingchao1，CHEN Zhao1，WANG Zheng1. Experimental study on the size effect of crack propagation process of disk samples containing parallel double pre-existing flaws. , 2023, 42(1): 115-128.

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https://rockmech.whrsm.ac.cn/CN/10.13722/j.cnki.jrme.2021.1113 或 https://rockmech.whrsm.ac.cn/CN/Y2023/V42/I1/115

[1]	赵阳升. 岩体力学发展的一些回顾与若干未解之百年问题[J]. 岩石力学与工程学报，2021，40(7)：1 297–1 336.(ZHAO Yangsheng. Retrospection on the development of rock mass mechanics and the summary of some unsolved centennial problems[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(7)：1 297–1 336.(in Chinese))
[2]	GAO M Z，XIE J，GAO Y N，et al. Mechanical behavior of coal under different mining rates：a case study from laboratory experiments to field testing[J]. International Journal of Mining Science and Technology，2021，31(5)：825–841.
[3]	AI T，WU S Y，ZHANG R，et al. Changes in the structure and mechanical properties of a typical coal induced by water immersion[J]. International Journal of Rock Mechanics and Mining Sciences，2021，138：104597.
[4]	吴顺川，郭超，高永涛，等. 岩体破裂震源定位问题探讨与展望[J]. 岩石力学与工程学报，2021，40(5)：874–891.(WU Shunchuan，GUO Chao，GAO Yongtao，et al. Discussion and prospect of source location of rock fracture[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(5)：874–891.(in Chinese))
[5]	ZHANG S，WANG H Y，LI X J，et al. Experimental study on development characteristics and size effect of rock fracture process zone[J]. Engineering Fracture Mechanics，2020，241：107377.
[6]	ZHANG S，AN D C，ZHANG X L，et al. Research on size effect of fracture toughness of sandstone using the center-cracked circular disc samples[J]. Engineering Fracture Mechanics，2021，251(2)：107777.
[7]	郭奇峰，武旭，蔡美峰，等. 预制裂隙花岗岩的裂纹起裂机制试验研究[J]. 煤炭学报，2019，44(增2)：476–483.(GUO Qifeng，WU Xu，CAI Meifeng，et al. Crack initiation mechanism of pre-existing cracked granite[J]. Journal of China Coal Society，2019，44(Supp. 2)：476–483.(in Chinese))
[8]	谢其泰，郭俊志，王建力，等. 单轴压缩下含倾斜单裂纹砂岩试件裂纹扩展量测研究[J]. 岩土力学，2011，32(10)：2 917–2 921.(XIE Qitai，GUO Junzhi，WANG Jianli，et al. A study of crack propagation measurement on sandstone with a single inclined flaw under uniaxial compression[J]. Rock and Soil Mechanics，2011，32(10)：2 917–2 921. (in Chinese))
[9]	靳瑾，曹平，蒲成志. 预制裂隙几何参数对类岩材料破坏模式及强度的影响[J]. 中南大学学报：自然科学版，2014，45(2)：529–535.(JIN Jin，CAO Ping，PU Chengzhi. Influence of flaw parameters on damage mode and strength of rock-like materials[J]. Journal of Central South University：Science and Technology，2014，45(2)：529–535.(in Chinese))
[10]	肖桃李，李新平，贾善坡. 含2条断续贯通预制裂隙岩样破坏特性的三轴压缩试验研究[J]. 岩石力学与工程学报，2015，34(12)：2 455–2 462.(XIAO Taoli，LI Xinping，JIA Shanpo. Failure characteristics of rock with two pre-existing transfixion cracks under triaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(12)：2 455–2 462.(in Chinese))
[11]	张晗，张晓平，张旗，等. 含双裂隙试样裂纹贯通细观机理研究[J/OL]. 工程地质学报，DOI：10.13544/j.cnki.jeg.2021–0071. (ZHANG Han，ZHANG Xiaoping，ZHANG Qi，et al. Study on meso-mechanism of crack coalescence in specimens containing double pre-existing flaws[J/OL]. Journal of Engineering Geology，DOI：10.13544/ j.cnki.jeg.2021–0071.(in Chinese))
[12]	朱其志，闵中泽，王岩岩，等. 粉砂岩三轴压缩试验中的试样尺寸效应研究[J]. 岩石力学与工程学报，2019，38(增2)：3 296–3 303. (ZHU Qizhi，MIN Zhongze，WANG Yanyan，et al. Study on the size effect of silty sandstone samples under conventional triaxial compression[J]. Chinese Journal of Rock Mechanics and Engineering，2019，38(Supp.2)：3 296–3 303.(in Chinese))
[13]	伍法权，乔磊，管圣功，等. 小尺寸岩样单轴压缩试验尺寸效应研究[J]. 岩石力学与工程学报，2021，40(5)：865–873.(WU Faquan，QIAO Lei，GUAN Shenggong，et al. Uniaxial compression test study on size effect of small size rock samples[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(5)：865–873.(in Chinese))
[14]	赵光明，周俊，孟祥瑞，等. 高径比差异条件下花岗岩岩石动态冲击压缩特性[J]. 岩石力学与工程学报，2021，40(7)：1 392–1 401. (ZHAO Guangming，ZHOU Jun，MENG Xiangrui，et al. Dynamic impact compression characteristics of granite rocks with different length-diameter ratios[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(7)：1 392–1 401.(in Chinese))
[15]	张盛，王龙飞，常旭，等. 中心直裂纹半圆盘试样的石灰岩断裂韧度尺寸效应试验研究[J]. 岩土力学，2019，40(5)：1 740–1 749. (ZHANG Sheng，WANG Longfei，CHANG Xu，et al. Experimental study of size effect of fracture toughness of limestone using the notched semi-circular bend samples[J]. Rock and Soil Mechanics，2019，40(5)：1 740–1 749.(in Chinese))
[16]	张盛，喻炳鑫，王峰，等. 不同尺寸含裂缝岩样动态破坏特征的实验研究[J]. 采矿与安全工程学报，2021，38(5)：1 045–1 054. (ZHANG Sheng，YU Bingxin，WANG Feng，et al. Experimental study on dynamic fracture characteristics of different sizes of rock specimens with a crack[J]. Journal of Mining and Safety Engineering，2021，38(5)：1 045–1 054.(in Chinese))
[17]	齐飞飞，张科，谢建斌. 基于DIC技术的含不同节理密度类岩石试件破裂机制研究[J]. 岩土力学，2021，42(6)：1 669–1 680.(QI Feifei，ZHANG Ke，XIE Jianbin. Fracturing mechanism of rock-like specimens with different joint densities based on DIC technology[J]. Rock and Soil Mechanics，2021，42(6)：1 669–1 680.(in Chinese))
[18]	金爱兵，王树亮，王本鑫，等. 基于DIC技术的3D打印节理试件破裂机制研究[J]. 岩土力学，2020，41(10)：3 214–3 224.(JIN Aibing，WANG Shuliang，WANG Benxin，et al. Fracture mechanism of specimens with 3D printing cross joint based on DIC technology[J]. Rock and Soil Mechanics，2020，41(10)：3 214–3 224.(in Chinese))
[19]	李建旺. 基于数字图像技术的含双预制裂隙类岩石试样力学特性细观研究[J]. 中国矿业，2020，29(9)：168–174.(LI Jianwang. Meso research on the mechanical properties of rock specimens with double pre-existing fissures based on digital image correlation[J]. China Mining Magazine，2020，29(9)：168–174.(in Chinese))
[20]	SHARAFISAFA M，SHEN L M，ZHENG Y G，et al. The effect of flaw filling material on the compressive behaviour of 3D printed rock-like discs[J]. International Journal of Rock Mechanics and Mining Sciences，2019，117：105–117.
[21]	SHARAFISAFA M，ALIABADIAN Z，SHEN L M. Crack initiation and failure development in bimrocks using digital image correlation under dynamic load[J]. Theoretical and Applied Fracture Mechanics，2020，109(5)：102688.
[22]	LIN Q，WANG S Q，PAN P Z，et al. Imaging opening-mode fracture in sandstone under three-point bending：a direct identification of the fracture process zone and traction-free crack based on cohesive zone model[J]. International Journal of Rock Mechanics and Mining Sciences，2020，136：104516.
[23]	王笑然，王恩元，刘晓斐，等. 煤样三点弯曲裂纹扩展及断裂力学参数研究[J]. 岩石力学与工程学报，2021，40(4)：690–702.(WANG Xiaoran，WANG Enyuan，LIU Xiaofei，et al. Three-point-bending test of crack propagation and fracture parameters of coal specimens[J]. Chinese Journal of Rock Mechanics and Engineering，2021，40(4)：690–702.(in Chinese))
[24]	PAN B，QIAN K M，XIE H M，et al. Two-dimensional digital image correlation for in-plane displacement and strain measurement：a review[J]. Measurement Science and Technology，2009，20(6)：152–154.
[25]	ZHANG Z P，XIE H P，ZHANG R，et al. Deformation damage and energy evolution characteristics of coal at different depths[J]. Rock Mechanics and Rock Engineering，2019，52(5)：1 491–1 503.
[26]	王燕升，邓建辉. 基于HHT和AE主频统计的岩石破坏进程分析[J]. 地下空间与工程学报，2018，14(5)：1 266–1 275.(WANG Yansheng，DENG Jianhui. Analysis on rock failure process based on HHT and AE dominant frequency statistics[J]. Chinese Journal of Underground Space and Engineering，2018，14(5)：1 266–1 275.(in Chinese))
[27]	王笑然，李楠，王恩元，等. 岩石裂纹扩展微观机制声发射定量反演[J]. 地球物理学报，2020，63(7)：2 627–2 643.(WANG Xiaoran，LI Nan，WANG Enyuan，et al. Microcracking mechanisms of sandstone from acoustic emission source inversion[J]. Chinese Journal of Geophysics，2020，63(7)：2 627–2 643.(in Chinese))
[28]	PAN K M，YU R C，RUIZ G，et al. The propagation speed of multiple dynamic cracks in fiber-reinforced cement-based composites measured using DIC[J]. Cement and Concrete Composites，2021，122：104140.
[29]	郎林，朱哲明，邓帅，等. 基于圆弧底试件的动态裂纹扩展及止裂规律研究[J]. 爆炸与冲击，2020，40(9)：42–53.(LANG Lin，ZHU Zheming，DENG Shuai，et al. Dynamic crack growth and crack arrest law based on arc bottom specimen[J]. Explosion and Shock Waves，2020，40(9)：42–53.(in Chinese))
[30]	WU L Z，LI B，HUANG R Q，et al. Study on mode I～II hybrid fracture criteria for the stability analysis of sliding overhanging rock[J]. Engineering Geology，2016，209：187–195.
[31]	李列列，卓莉，邵江，等. 岩石巴西圆盘复合型断裂力学特征及空间效应研究[J]. 工程科学与技术，2017，49(增1)：132–138.(LI Lielie，ZHUO Li，SHAO Jiang，et al. Mechanical characteristics and spatial effect research of rocks using Brazilian disk under mixed mode loading[J]. Advanced Engineering Sciences，2017，49(Supp.1)：132–138.(in Chinese))