含预制裂隙类岩石裂隙演化与破裂特征的试验研究

doi:10.11872/j.issn.1005-2518.2020.03.164

Abstract

Abstract:

Fracture rock mass is a kind of engineering rock mass widely existing in nature，which is easy to cause structural failure and instability of rock mass and induce engineering accidents under the action of external force.Therefore，it is necessary to study the crack evolution law and the fracture instability mechanism of rock mass with prefabricated fractures.In this paper，a lot of rock-like samples with prefabricated crisscross cracks were made based on the similarity theory.The uniaxial compression test on the rock-like samples with different fracture length and inclination angles were carried out by using the RMT-150B rock mechanics testing machine，and crack evolution law and fracture characteristics were analyzed.The research results show that the compressive strength of the samples with crisscross crack is significantly lower than that of the intact. The peak stress decreases with the increase of secondary crack length when the principal crack length of the sample is constant. The failure mode of the sample contain crisscross crack with the dip angle are 0° and 60° respectively shows the tensile wing cracks.The failure mode of the specimen contain crisscross crack with the dip angle are 30° and 45° respectively shows the tensile-shear mixed cracks, which have both wing-shaped cracks and se-condary coplanar cracks.

Key words: rock-like, criss-cross fractures, fracture evolution, fracture failure characteristics, uniaxial compression test

CLC Number:

TD85

Chengcheng WANG, Xinyao LUO, Kexu CHEN, Bing DAI, Guicheng HE. Experimental Study on Crack Evolution and Fracture Characteristics of Rocks with Prefabricated Cracks[J].Gold Science and Technology, 2020, 28(3): 421-429.

Figures/Tables 8

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References 22

1	周家文，杨兴国，符文熹，等.脆性岩石单轴循环加卸载试验及断裂损伤力学特性研究[J].岩石力学与工程学报，2010，29（6）：1172-1183.
	Zhou Jiawen，Yang Xingguo，Fu Wenxi，et al. Experimental test and fracture damage mechanical characteristics of brittle rock under uniaxial cyclic loading and unloading[J].Chinese Journal of Geotechnical Engineering，2010，29（ 6）：1172-1183.
2	魏元龙，杨春和，郭印同，等.单轴循环荷载下含天然裂隙脆性页岩变形及破裂特征试验研究[J].岩土力学，2015，36（6）：1649-1658.
	Wei Yuanlong，Yang Chunhe，Guo Yintong，et al. Experimental investigation on deformation and fracture characteristics of brittle shale with natural cracks under uniaxial cyclic loading[J].Rock and Soil Mechanics，2015，36（6）：1649-1658.
3	王奇智，吴帮标，刘丰，等.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 Qizhi，Wu Bangbiao，Liu Feng，et al.Dynamic failure of simulated rockmass plate containing one pre-existing flaw[J].Chinese Journal of Rock Mechanics and Engineering，2018，37（11）：2489-2497.
4	谢璨，李树忱，晏勤，等.不同尺寸裂隙岩石损伤破坏特性光弹性试验研究［J］.岩土工程学报，2018，40（3）：568-575.
	Xie Can，Li Shuchen，Yan Qin，et al.Photoelastic experiments on failure characteristics of fractured rock with different sizes[J].Chinese Journal of Geotechnical Engineering，2018，40（3）：568-575.
5	马鹏飞，李树忱，周慧颖，等.岩石材料裂纹扩展的改进近场动力学方法模拟[J].岩土力学，2019，40（10）：1-10.
	Ma Pengfei，Li Shuchen，Zhou Huiying，et al.Simulations of crack propagation in rock-like materials using extended peridynamic method[J].Rock and Soil Mechanics，2019，40（10）：1-10.
6	李铮，郭德平，周小平，等.模拟岩石中裂纹扩展连接的近场动力学方法[J].岩土力学，2019，40（12）：1-12.
	Li Zheng，Guo Deping，Zhou Xiaoping，et al.Numerical simulation of the propagation and coalescence of cracks using peridynamics[J].Rock and Soil Mechanics，2019，40（12）：1-12.
7	李银平，王元汉，陈龙珠，等.含预制裂纹大理岩的压剪试验分析[J].岩土工程学报，2004，26（1）：120-124.
	Li Yinping，Wang Yuanhan，Chen Longzhu，et al.Experimental research on pre-existing cracks in marble under compression[J].Chinese Journal of Geotechnical Engineering，2004，26（1）：120-124.
8	陈新，廖志红，李德建. 节理倾角及连通率对岩体强度、变形影响的单轴压缩试验研究[J]. 岩石力学与工程学报，2011，30（4）：781-789.
	Chen Xin，Liao Zhihong，Li Dejian. Experimental study of effects of joint inclination angle and connectivity rate on strength and deformation properties of rock masses under uniaxial compression[J].Chinese Journal of Rock Mechanics and Engineering，2011，30（4）：781-789.
9	Wong L N Y，Einstein H H.Systematic evaluation of cracking behavior in specimens containing single flaws under uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2008，46（2）：239-249.
10	Wong L N Y，Einstein H H. Crack coalescence in molded gypsum and Carrara marble：part 1—Macroscopic observations and interpretation[J]. Rock Mechanics and Rock Engineering，2009，42（3）：475-511.
11	Wong L N Y，Einstein H H. Crack coalescence in molded gypsum and Carrara marble：part 2—Microscopic observations and interpretation[J]. Rock Mechanics and Rock Engineering，2009，42（3）：513-545.
12	Bobet A.The initiation of secondary cracks in compression[J].Engineering Fracture Mechanics，2000，66（2）：187-219.
13	Dyskin A V，Germanovich L N，Ustinov K B. A 3-D model of wing crack growth and interaction[J]. Engineering Fracture Mechanics，1999，63（1）：81-110.
14	Dyskin A V，Sahouryeh E，Jewell R J，et al. Influence of shape and locations of initial 3-D cracks on their growth in uniaxial compression[J]. Engineering Fracture Mechanics，2003，70（15）：2115-2136.
15	Lee H，Jeon S.An experimental and numerical study of fracture coalescence in pre-cracked specimens under uniaxial compression[J].International Journal of Solids and Structures，2011，48（6）：979-999.
16	陈云娟，刘洪钊，尹福强，等.交叉节理类岩石裂隙扩展规律研究［J］.山东建筑大学学报，2019，34（2）：22-26.
	Chen Yunjuan，Liu Hongzhao，Yin Fuqiang，et al.Study on crack propagation of cross jointed rock-like specimen[J].Journal of Shandong Jianzhu University，2019，34（2）：22-26.
17	蒲成志.单轴压缩下类岩体裂隙材料断裂破坏机制的实验研究[D].长沙：中南大学，2010.
	Pu Chengzhi.Experiment Research on the Fraeture Failure Mechanism of Rock-like Material with Fissures Under Uniaxial Compression[D].Changsha：Central South University，2010.
18	罗可，招国栋，曾佳君，等.加载速率影响的含裂隙类岩石材料破断试验与数值模拟［J］.岩石力学与工程学报，2018，37（8）：1833-1842.
	Luo Ke，Zhao Guodong，Zeng Jiajun，et al.Fracture experiments and numerical simulation of cracked body in rock-like materials affected by loading rate[J].Chinese Journal of Rock Mechanics and Engineering，2018，37（8）：1833-1842.
19	肖建清. 循环荷载作用下岩石疲劳特性的理论与实验研究[D].长沙：中南大学，2009.
	Xiao Jianqing.Theoretical and Experimental Investigation on Fatigue Properties of Rock Under Eyclie Loading[D].Changsha：Central South University，2009.
20	蔡美峰，何满潮，刘东燕，等. 岩石力学与工程[M]. 北京：科学出版社，2002:35-46.
	Cai Meifeng，He Manchao，Liu Dongyan，et al.Rock Mechanics and Engineering[M].Beijing：Science Press，2002:35-46.
21	赵延林，万文，王卫军.类岩石材料有序多裂纹体单轴压缩破断试验与翼形断裂数值模拟[J].岩土工程学报，2013，35（11）：2097-2109.
	Zhao Yanlin，Wan Wen，Wang Weijun.Fracture experiments on ordered multi-crack body in rock-like materials under uniaxial compression and numerical simulation of wing cracks[J].Chinese Journal of Geotechnical Engineering，2013，35（11）：2097-2109.
22	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）：1882-1889.
	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）：1882-1889.

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编号	主、次裂隙长度（L₁×L₂）/（mm×mm）	十字裂隙角度/（°）	编号	主、次裂隙长度（L₁×L₂）/（mm×mm）	十字裂隙角度/（°）	编号	主、次裂隙长度（L₁×L₂）/（mm×mm）	十字裂隙角度/（°）
A11	10×10	0	A21	20×10	0	A31	30×10	0
B11	10×10	30	B21	20×10	30	B31	30×10	30
C11	10×10	45	C21	20×10	45	C31	30×10	45
D11	10×10	60	D21	20×10	60	D31	30×10	60
A12	10×20	0	A22	20×20	0	A32	30×20	0
B12	10×20	30	B22	20×20	30	B32	30×20	30
C12	10×20	45	C22	20×20	45	C32	30×20	45
D12	10×20	60	D22	20×20	60	D32	30×20	60
A13	10×30	0	A23	20×30	0	A33	30×30	0
B13	10×30	30	B23	20×30	30	B33	30×30	30
C13	10×30	45	C23	20×30	45	C33	30×30	45
D13	10×30	60	D23	20×30	60	D33	30×30	60

Experimental Study on Crack Evolution and Fracture Characteristics of Rocks with Prefabricated Cracks

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