原岩应力对裂纹动态断裂行为的影响规律研究

doi:10.13722/j.cnki.jrme.2019.0347

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Abstract Deep rock mass exists in high in-situ stress environment and is often disturbed by dynamic loads. In order to study the effect of in-situ stresses on the dynamic fracture behaviors of cracks，the initial stresses of rock were given by lateral pressure equipment to simulate in-situ stresses，and impact experiments were conducted with medium and low speed drop weight impact device. Crack initiation time and crack propagation velocity were obtained by using crack propagation gauge(CPG) in impact test，and numerical simulations were also carried out by using AUTODYN finite different code and ABAQUS finite element code. The experimental and numerical simulation results show that the in-situ stress perpendicular to the crack surface changes the initiation time，crack propagation speed and crack propagation length but has no effect on the critical dynamic stress intensity factor. The in-situ stress perpendicular to the crack surface delays the initiation time of the crack，and the larger the in-situ stress，the lower the crack propagation speed and the shorter the crack propagation length.

Key words： rock mechanics in-situ stresses crack initiation time crack propagation speed critical dynamic stress intensity factor

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	Articles by authors
	DENG Shuai1
	2
	ZHU Zheming1
	2
	WANG Lei1
	2
	LIU Caoyuan1
	2
	ZHOU Lei1
	2
	YING Peng1
	2

Cite this article:

DENG Shuai1,2,ZHU Zheming1, et al. Study on the influence of in-situ stresses on dynamic fracture behaviors of cracks#br#[J]. , 2019, 38(10): 1989-1999.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0347 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/I10/1989

[1]	BANADAKI M M D，MOHANTY B. Numerical simulation of stress wave induced fractures in rock[J]. International Journal of Impact Engineering，2012，40(2)：16-25.
[2]	TAO M，LI X B，LI D Y. Rock failure induced by dynamic unloading under 3D stress state[J]. Theoretical and Applied Fracture Mechanics，2013，65：47-54.
[3]	王蒙，朱哲明，胡荣. 基于SCSCC试样的岩石复合型裂纹动态扩展特征研究[J]. 四川大学学报：工程科学版，2016，48(2)：57-65.(WANG Meng，ZHU Zheming，HU Rong. Rock experiments study of crack propagation under I and II mixed-mode dynamic loading using SCSCC specimens[J]. Journal of Sichuan University：Engineering Science，2016，48(2)：57-65.(in Chinese))
[4]	周磊，朱哲明，董玉清，等. 冲击加载下巷道内裂纹的扩展特性及破坏行为[J]. 爆炸与冲击，2018，38(4)：785-794.(ZHOU Lei，ZHU Zheming，DONG Yuqing，et al. Propagation characteristics and failure behaviors of crack in tunnel under impact loads[J]. Explosion and Shock Waves，2018，38(4)：785-794.(in Chinese))
[5]	谢和平，高峰，鞠杨. 深部岩体力学研究与探索[J]. 岩石力学与工程学报，2015，34(11)：2 161-2 178.(XIE Heping，GAO Feng，JU Yang. Research and development of rock mechanics in deep ground engineering[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(11)：2 161-2 178.(in Chinese))
[6]	ZHU Z M，WANG C，KANG J M，et al. Study on the mechanism of zonal disintegration around an excavation[J]. International Journal of Rock Mechanics and Mining Sciences，2014，67(4)：88-95.
[7]	WANG P，JIANG L S，JIANG J Q，et al. Strata behaviors and rock burst-inducing mechanism under the coupling effect of a hard，thick stratum and a normal fault[J]. International Journal of Geomechanics，2018，18(2)：04017135.
[8]	KAISER P K，KIM B H. Characterization of strength of intact brittle rock considering confinement-dependent failure processes[J]. Rock Mechanics and Rock Engineering，2015，48(1)：107-119.
[9]	LI X B，GONG F Q，TAO M，et al. Failure mechanism and coupled static-dynamic loading theory in deep hard rock mining：A review[J]. Journal of Rock Mechanics and Geotechnical Engineering，2017，9(4)：767-782.
[10]	HE C L，YANG J，YU Q. Laboratory study on the dynamic response of rock under blast loading with active confining pressure[J]. International Journal of Rock Mechanics and Mining Sciences，2018，102：101-108.
[11]	CHRISTENSEN R J，SWANSON S R，BROWN W S. Split- hopkinson-bar tests on rock under confining pressure[J]. Experimental Mechanics，1972，12(11)：508-513.
[12]	夏开文，姚伟. 预加载下岩石的动态力学性能研究[J]. 工程爆破，2015，21(6)：7-13.(XIA Kaiwen，YAO Wei. Dynamic mechanical properties of rock under pre-load[J]. Engineering Blasting，2015，21(6)：7-13.(in Chinese))
[13]	YANG R S，DING C X，LI Y L，et al. Crack propagation behavior in slit charge blasting under high static stress conditions[J]. International Journal of Rock Mechanics and Mining Sciences，2019，119：117-123.
[14]	CHEN R，LI K，XIA K W，et al. Dynamic fracture properties of rocks subjected to static pre-load using notched semi-circular bend method[J]. Rock Mechanics and Rock Engineering，2016，49(10)：3 865-3 872.
[15]	杨立云，杨仁树，许鹏，等. 初始压应力场对爆生裂纹行为演化效应的实验研究[J]. 煤炭学报，2013，38(3)：404-410.(YANG Liyun，YANG Renshu，XU Peng，et al. Experimental study on the effect of initial compression stress field on blast-induced crack behaviors[J]. Journal of the China Coal Society，2013，38(3)：404-410.(in Chinese))
[16]	KUTTER H K，FAIRHURST C. On the fracture process in blasting[J]. International Journal of Rock Mechanics and Mining Sciences，1971，8(3)：181-202.
[17]	ROSSMANITH H P，KNASMILLNER R E，DAEHNKE A，et al. Wave propagation，damage evolution，and dynamic fracture extension Part II[J]. Blasting Materials Science，1996，32(4)：403-410.
[18]	夏开文，徐颖，姚伟，等. 静荷预应力条件作用下岩板动态破坏行为试验研究[J]. 岩石力学与工程学报，2017，36(5)：86-96.(XIA Kaiwen，XU Ying，YAO Wei，et al. Experimental study of dynamic fracture behavior of brittle rockplate under static pre- loading[J]. Chinese Journal of Rock Mechanics and Engineering，2017，36(5)：86-96.(in Chinese))
[19]	YANG L Y，DING C X. Fracture mechanism due to blast-imposed loading under high static stress conditions[J]. International Journal of Rock Mechanics and Mining Sciences，2018，107：150-158.
[20]	ZHU Z M，MOHANTY B，XIE H P. Numerical investigation of blasting-induced crack initiation and propagation in rocks[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(3)：412-424.
[21]	YANG J H，YAO C，JIANG Q H，et al. 2D numerical analysis of rock damage induced by dynamic in-situ stress redistribution and blast loading in underground blasting excavation[J]. Tunnelling and Underground Space Technology，2017，70：221-232.
[22]	XIE L X，LU W B，ZHANG Q B，et al. Damage evolution mechanisms of rock in deep tunnels induced by cut blasting[J]. Tunnelling and Underground Space Technology，2016，58：257-270.
[23]	ZHU Z M，XIE H P，MOHANTY B. Numerical investigation of blasting-induced damage in cylindrical rocks[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(2)：111-121.
[24]	WEI C，ZHU W，BAI Y，et al. Numerical simulation on cutting seam cartridge blasting under different in-situ stress conditions[J]. Explosion and Shock Waves，2016，36(2)：161-169.
[25]	MA G W，AN X M. Numerical simulation of blasting-induced rock fractures[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(6)：966-975.
[26]	YI C P，JOHANSSON D，GREBERG D. Effects of in-situ stresses on the fracturing of rock by blasting[J]. Computers and Geotechnics，2018，104：321-330.
[27]	DONG Y Q，ZHU Z M，ZHOU L，et al. Study of mode I crack dynamic propagation behaviour and rock dynamic fracture toughness by using SCT specimens[J]. Fatigue and Fracture of Engineering Materials and Structures，2018，41(8)：1 810-1 822.
[28]	FREUND L B. Dynamic fracture mechanics[M]. Cambridge：Cambridge University Press，1990：1-60.