水–力共同作用下预制裂隙类岩石试样裂纹扩展试验研究

doi:10.13722/j.cnki.jrme.2018.1437

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (775 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Rock-like specimens with different angles of pre-existing cracks，made by embedded thin sheet method，were using to study the fracturing behaviors and mechanical properties of hydro-mechanical coupled cracks. In this study，1，3 and 5 MPa water pressure were applied inside the pre-existing crack respectively and led to the specimen failure with external compression loading under 6 MPa confining pressure. By analyzing the mechanical properties and failure patterns，the test showed that the failure mode changes from ductile failure to brittle failure with the increase of water pressure. The triaxial strength，post-peak residual strength and elastic modulus all decrease when water pressure increases，and decreases firstly and then increases when pre-existing crack?s angle increases. The fracture angles of intact specimens increases with water pressure increases and the failure pattern transforms from shear failure to splitting failure. When the angle of the pre-existing crack is small，the failure mode of cracked specimen affected by water pressure，and X-shaped crack morphology was observed under high water pressure. When the angle of the pre-existing crack between 60°and 90°，the fracture surface presents a single inclined plane，and the angle of the fracture surface is basically identical with the pre-existing crack.

Key words： rock mechanics hydro-mechanical coupling failure characteristics crack propagation

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	ZHAO Cheng1
	2
	3
	XING Jinquan1
	NIU Jialun1
	MA Chuangchuang4

Cite this article:

ZHAO Cheng1,2,3, et al. Experimental study on crack propagation of precrack rock-like specimens under hydro-mechanical coupling[J]. , 2019, 38(S1): 2823-2830.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2018.1437 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/IS1/2823

[1]	PETIT J P，BARQUINS M. Can natural faults propagate under mode II conditions?[J]. Tectonics，1988，7(6)：1 243–1 256.
[2]	BOBET A. The initiation of secondary cracks in compression[J]. Engineering Fracture Mechanics，2000，66(2)：187–219.
[3]	BOBET A，EINSTEIN H H. Fracture coalescence in rocktype materials under uniaxial and biaxial compression[J]. International Journal of Rock Mechanics and Mining Science，1998，35(7)：863–888.
[4]	PARK C H，BOBET A. Crack initiation，propagation and coalescence from frictional flaws in uniaxial compression[J]. Engineering Fracture Mechanics，2010，77(14)：2 727–2 748.
[5]	WONG L N Y. Systematic evaluation of cracking behavior in specimens containing single flaws under uniaxial compression[J]. International Journal of Rock Mechanics and Mining Sciences，2009，46(2)：239–249.
[6]	赵程，鲍冲，松田浩，等. 数字图像技术在节理岩体裂纹扩展试验中的应用研究[J]. 岩土工程学报，2015，37(5)：944–951. (ZHAO Cheng，BAO Chong，MATSUDA Hiroshi，et al. Application of digital image correlation method in experimental research on crack propagation of brittle rock[J]. Chinese Journal of Geotechnical Engineering，2015，37(5)：944–951.(in Chinese))
[7]	DESBOIS G，H?HNE N，URAI J L，et al. Deformation in cemented mudrock(Callovo-Oxfordian Clay) by microcracking，granular flow and phyllosilicate plasticity：insights from triaxial deformation，broad ion beam polishing and scanning electron microscopy[J]. Solid Earth，2017，8：1–30.
[8]	姜振泉，季梁军. 岩石全应力–应变过程渗透性试验研究[J]. 岩土工程学报，2001，23(2)：153–156.(JIANG Zhenquan，JI Liangjun. The laboratory study on behavior of permeability of rock along the complete stress-strain path[J]. Chinese Journal of Geotechnical Engineering，2001，23(2)：153–156.(in Chinese))
[9]	SOULEY M，HOMAND F，PEPA S，et al. Damage–induced permeability changes in granite：a case example at the URL in Canada[J]. International Journal of Rock Mechanics and Mining Sciences，2001，38(2)：297–310.
[10]	杨永杰，宋扬，陈绍杰. 煤岩全应力应变过程渗透性特征试验研究[J]. 岩土力学，2007，28(2)：381–385.(YANG Yongjie，SONG Yang，CHEN Shaojie. Test study on permeability properties of coal specimen in complete stress-strain process[J]. Rock and Soil Mechanics，2007，28(2)：381–385.(in Chinese))
[11]	赵延林，曹平，汪亦显，等. 裂隙岩体渗流–损伤–断裂耦合模型及其应用[J]. 岩石力学与工程学报，2008，27(8)：477–486.(ZHAO Yanlin，CAO Ping，WANG Yixian，et al. Coupling model of seepage- damage-fracture in fractured rock masses and its application[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(8)：477–486.(in Chinese))
[12]	曹平，杨慧，江学良，等. 水岩作用下岩石亚临界裂纹的扩展规律[J]. 中南大学学报：自然科学版，2010，41(2)：649–654.(CAO Ping，YANG Hui，JIANG Xueliang，et al. Subcritical crack growth of rock during water-rock interaction[J]. Journal of Central South University：Science and Technology，2010，41(2)：649–654.(in Chinese))
[13]	申林方，冯夏庭，潘鹏志，等. 单裂隙花岗岩在应力–渗流–化学耦合作用下的试验研究[J]. 岩石力学与工程学报，2010，29(7)：1 379–1 388. (SHEN Linfang，FENG Xiating，PAN Pengzhi，et al. Experimental research on mechano-hydro-chemical coupling of granite with single fracture[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(7)：1 379–1 388.(in Chinese))
[14]	李夕兵，贺显群，陈红江. 渗透水压作用下类岩石材料张开型裂纹启裂特性研究[J]. 岩石力学与工程学报，2012，31(7)：1 317–1 324. (LI Xibing，HE Xianqun，CHEN Hongjiang. Crack initiation characteristics of opening-mode crack embedded in rock-like material under seepage pressure[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(7)：1 317–1 324.(in Chinese))
[15]	王伟，陈曦，田振元，等. 不同排水条件下砂岩应力渗流耦合试验研究[J]. 岩石力学与工程学报，2016，35(增2)：3 540–3 551. (WANG Wei，CHEN Xi，TIAN Zhenyuan，et al. Experimental study on stress-seepage coupling properties of sandstone under different drainage conditions[J]. Chinese Journal of Rock Mechanics and Engineering，2016，35(Supp.2)：3 540–3 551.(in Chinese))
[16]	BENNOUR Z，ISHIDA T，NAGAYA Y，et al. Crack extension in hydraulic fracturing of shale cores using viscous oil，water，and liquid carbon dioxide[J]. Rock Mechanics and Rock Engineering，2015，48(4)：1 463–1 473.
[17]	LIN C，HE J，LI X，et al. An experimental investigation into the effects of the anisotropy of shale on hydraulic fracture propagation[J]. Rock Mechanics and Rock Engineering，2016，50(3)：1–12.