冲击荷载作用下岩石动态力学特性及破裂特征研究

doi:10.13722/j.cnki.jrme.2017.0539

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

Download: PDF (1400 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Split Hopkinson pressure bar(SHPB) apparatus was used to study the factor of dynamic strength increasing，the density of dissipation energy and the fragment size of limestone，dolomite and sandstone subject to impact loading. SHPB has some difficulties to measure the higher strain rate and dynamic damage process for rock materials. The grain-based model was thus built by using the high resolution scanning and image processing technique combined with the discrete element method. The accuracy of numerical simulation was verified with the experimental SHPB results. The results indicated that the dynamic failure strength of rock material was rate dependent strongly，but the elastic modulus did not increase significantly with the increasing strain rate. The semi-empirical formula for evaluating the factor of dynamic strength increasing is consistent with the Ханукаев equation. The failure pattern of the rock transforms from the intact→splitting damage→pulverized damage with the increasing strain rate. This phenomenon is determined by the number of the micro cracks activated and the interaction between the cracks. The increase of the crack density and the change of the crack propagation path are the mechanism of the dynamic fracture of the rock，and the macrosopic responses are the rate effect and fragmentation of the material.

Key words： rock mechanics split Hopkinson pressure bar(SHPB) rate dependency micro discrete element method dynamic damage and fragment

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LI Xiaofeng1
	2
	3
	LI Haibo1
	LIU Kai2
	ZHANG Qianbing2
	ZOU Fei4
	HUANG Lixing1
	ZHAO Jian2

Cite this article:

LI Xiaofeng1,2,3, et al. Dynamic properties and fracture characteristics of rocks subject to impact loading[J]. , 2017, 36(10): 2393-2405.

URL:

http://www.rockmech.org/EN/10.13722/j.cnki.jrme.2017.0539 OR http://www.rockmech.org/EN/Y2017/V36/I10/2393

[9]	ZHOU Y X，XIA K，LI X B，et al. Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials[C]// The ISRM Suggested Methods for Rock Characterization，Testing and Monitoring：2007-2014. [S.l.]：Springer International Publishing，2011：35-44. " target="_blank">
[14]	CHOCRON S，DANNEMANN K A，NICHOLLS A，et al. Apache Leap tuff rock：High strain rate characterization and support simulations[C]// EURODYMAT 2006-8th International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading. [S.l.]：Journal de Physique IV France，2006，134：565-570. " target="_blank">
[32]	CHO N，MARTIN C D，SEGO D C. A clumped particle model for rock[J]. International Journal of Rock Mechanics and Mining Sciences，2007，44(7)：997-1 010.
[35]	GRADY D E，LIPKIN J. Criteria for impulsive rock fracture[J]. Geophysical Research Letters，1980，7(4)：255-258. " target="_blank">
[37]	GARY G，BAILLY P. Behaviour of quasi-brittle material at high strain rate. Experiment and modelling[J]. European Journal of Mechanics- A/Solids，1998，17(3)：403-420. " target="_blank">
[38]	MASUDA K，MIZUTANI H，YAMADA I. Experimental study of strain-rate dependence and pressure dependence of failure properties of granite[J]. Journal of Physics of the Earth，1987，35(1)：37-66. " target="_blank">
[41]	GRADY D E. Local inertial effects in dynamic fragmentation[J]. Journal of Applied Physics，1982，53(1)：322-325. " target="_blank">
[42]	LI X F，LI H B，LIU Y Q，et al. Numerical simulation of rock fragmentation mechanisms subject to wedge penetration for TBMs[J]. Tunnelling and Underground Space Technology，2016，53(3)：96-108. " target="_blank">
[2]	黄理兴. 岩石动力学研究成就与趋势[J]. 岩土力学，2011，32(10)： 2 889-2 900.(HUANG Lixing. Development and new achievements of rock dynamics in China[J]. Rock and Soil Mechanics，2011，32(10)：2 889-2 900.(in Chinese))
[17]	FREW D J，FORRESTAL M J，CHEN W. A split Hopkinson pressure bar technique to determine compressive stress-strain data for rock materials[J]. Experimental Mechanics，2001，41(1)：40-46.
[25]	HAO Y，HAO H. Numerical investigation of the dynamic compressive behaviour of rock materials at high strain rate[J]. Rock Mechanics and Rock Engineering，2013，46(2)：373-388.
[30]	LI X，ZOU Y，ZHOU Z. Numerical simulation of the rock SHPB test with a special shape striker based on the discrete element method[J]. Rock Mechanics and Rock Engineering，2014，47(5)：1 693-1 709. " target="_blank">
[1]	王礼立. 爆炸与冲击载荷下结构和材料动态响应研究的新进展[J]. 爆炸与冲击，2001，21(2)：81-88.(WANG Lili. Progress in studies on dynamic response of structures and materials under explosive/impact loading[J]. Explosion and Shock Waves，2001，21(2)：81-88.(in Chinese))
[4]	NEMAT-NASSER S. Introduction to high strain rate testing[J]. Mechanical testing and evaluation，2000：427-428. " target="_blank">
[15]	GOLDSMITH W，SACKMAN J L，EWERTS C. Static and dynamic fracture strength of Barre granite[C]// International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts. Pergamon：[s.n.]，1976，13(11)：303-309. " target="_blank">
[24]	HUANG S，XIA K，ZHENG H. Observation of microscopic damage accumulation in brittle solids subjected to dynamic compressive loading[J]. Review of Scientific Instruments，2013，84(9)：093903. " target="_blank">
[27]	LIAO Z Y，ZHU J B，XIA K W，et al. Determination of dynamic compressive and tensile behavior of rocks from numerical tests of split Hopkinson pressure and tension bars[J]. Rock Mechanics and Rock Engineering，2016，49(10)：3 917-3 934. " target="_blank">
[36]	LIU D Z. Ore-bearing rock blasting physical process[M]. Beijing：Metallurgical Industry Press，1980：428-433. " target="_blank">
[28]	ZHU J B，LIAO Z Y，TANG C A. Numerical SHPB tests of rocks under combined static and dynamic loading conditions with application to dynamic behavior of rocks under in situ stresses[J]. Rock Mechanics and Rock Engineering，2016，49(10)：3 935-3 946. " target="_blank">
[33]	POTYONDY D O，CUNDALL P A. A bonded-particle model for rock[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(8)：1 329-1 364. " target="_blank">
[40]	GRADY D E，KIPP M E. Continuum modelling of explosive fracture in oil shale[C]// International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts. Pergamon：[s.n.]，1980，17(3)：147-157. " target="_blank">
[5]	ZHANG Q B，ZHAO J. A review of dynamic experimental techniques and mechanical behaviour of rock materials[J]. Rock Mechanics and Rock Engineering，2014，47(4)：1 411-1 478. " target="_blank">
[7]	LOGAN J M，HANDIN J. Triaxial compression testing at intermediate strain rates[C]// The 12th US Symposium on Rock Mechanics (USRMS). [S.l.]：American Rock Mechanics Association，1970：167-194. " target="_blank">
[10]	ATTEWELL P B. Response of rocks to high velocity impact[J]. Transactions of the Institution of Mining and Metallurgy，1962，71：705-24. " target="_blank">
[11]	KUMAR A. The effect of stress rate and temperature on the strength of basalt and granite[J]. Geophysics，1968，33(3)：501-510. " target="_blank">
[12]	HAKALEHTO K O. Brittle fracture of rocks under impulse loads[J]. International Journal of Fracture，1970，6(3)：249-256. " target="_blank">
[16]	ZHAO J，ZHOU Y X，HEFNY A M，et al. Rock dynamics research related to cavern development for ammunition storage[J]. Tunnelling and Underground Space Technology，1999，14(4)：513-526. " target="_blank">
[18]	SHAN R，JIANG Y，LI B. Obtaining dynamic complete stress-strain curves for rock using the split Hopkinson pressure bar technique[J]. International Journal of Rock Mechanics and Mining Sciences，2000，37(6)：983-992. " target="_blank">
[20]	KIM D S，MCCARTER M K. Quantitative assessment of extrinsic damage in rock materials[J]. Rock Mechanics and Rock Engineering，1998，31(1)：43-62. " target="_blank">
[21]	LIU X，LI X，HONG L，et al. Acoustic emission characteristics of rock under impact loading[J]. Journal of Central South University，2015，22(9)：3 571-3 577. " target="_blank">
[26]	ZHU W C，BAI Y，LI X B，et al. Numerical simulation on rock failure under combined static and dynamic loading during SHPB tests[J]. International Journal of Impact Engineering，2012，49：142-157. " target="_blank">
[3]	LINDHOLM U S. High strain rate tests[J]. Measurement of Mechanical Properties，1971，5(Part 1)：199-271. " target="_blank">
[13]	OLSSON W A. The compressive strength of tuff as a function of strain rate from 10−6 to 103/sec[C]// International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts. Pergamon：[s.n.]，1991，28(1)：115-118. " target="_blank">
[19]	GOMEZ J T，SHUKLA A. Static and dynamic behavior of damaged concrete and granite in compression[J]. Journal of Testing and Evaluation，2001，29(6)：563-569. " target="_blank">
[23]	万国香，王其胜，李夕兵. 应力波作用下岩石声发射能量特征[J]. 实验力学，2012，(6)：727-733.(WAN Guoxiang，WANG Qisheng，LI Xibin. On the acoustic emission(AE) energy characteristics of rock subjected to stress waves[J]. Journal of Experimental Mechanics，2012，(6)：727-733.(in Chinese)) " target="_blank">
[29]	WANG Y，TONON F. Dynamic validation of a discrete element code in modeling rock fragmentation[J]. International Journal of Rock Mechanics and Mining Sciences，2011，48(4)：535-545.
[31]	XU Y，DAI F，XU N W，et al. Numerical investigation of dynamic rock fracture toughness determination using a semi-circular bend specimen in split Hopkinson pressure bar testing[J]. Rock Mechanics and Rock Engineering，2016，49(3)：731-745. " target="_blank">
[6]	FIELD J E，WALLEY S M，PROUD W G，et al. Review of experimental techniques for high rate deformation and shock studies[J]. International Journal of Impact Engineering，2004，30(7)：725-775.
[8]	ZHANG Q. Mechanical behaviour of rock materials under dynamic loading[Ph. D. Thesis][D]. [S.l.]：École Polytechnique Fédérale de Lausanne EPFL，2014. " target="_blank">
[22]	王其胜，万国香，李夕兵. 动静组合加载下岩石破坏的声发射实验[J]. 爆炸与冲击，2010，30(3)：247-253.(WANG Qisheng，WAN Guoxiang，LI Xibin. Acoustic emission experiment of rock failure under coupled static-dynamic load[J]. Explosion and Shock Waves，2010，30(3)：247-253.(in Chinese))
[34]	LANKFORD J. The role of tensile microfracture in the strain rate dependence of compressive strength of fine-grained limestone—analogy with strong ceramics[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1981，18(2)：173-175. " target="_blank">
[39]	ZHAO J，LI H B，WU M B，et al. Dynamic uniaxial compression tests on a granite[J]. International Journal of Rock Mechanics and Mining Sciences，1999，36(2)：273-277. " target="_blank">