载荷岩石材料在加载-卸荷扰动作用下声发射特性
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摘要
通过在不同应力水平下对岩石试样的加载-卸荷实验,对岩石试件在不同应力状态下受到"加载-卸荷"扰动时的声发射特征进行了试验研究.结果表明:在较低的应力水平下,岩体在受到加载作用时,会产生少量离散的声发射,而在卸载过程中几乎不产生声发射;而在较高的应力水平下,在受到加载扰动作用时,声发射活动相对活跃,而且在卸载时也有明显声发射信号出现.因此,在不同应力水平和应力状态下的声发射信号所反映的是材料不同的本构特征,在进行地下工程原位岩体的稳定性检测与评价时,必须考虑这种特性.
Based on load-unload experiment,the acoustic emission(AE)character of rock samples under load-unload disturbance was studied and tested under different stress levels.The results show that under a low stress level,there are several discrete AE signals when the rock sample is loaded,and almost no AE signals during unloading;under a high stress level,AE is active relatively under load disturbance,and there are obvious AE signals even during unloading.AE signals under different stress levels and stress states reflect different constitutive properties of rock materials.This characteristic must be considered in the stability testing and evaluation of underground engineering in-situ rock mass.
Based on load-unload experiment,the acoustic emission(AE)character of rock samples under load-unload disturbance was studied and tested under different stress levels.The results show that under a low stress level,there are several discrete AE signals when the rock sample is loaded,and almost no AE signals during unloading;under a high stress level,AE is active relatively under load disturbance,and there are obvious AE signals even during unloading.AE signals under different stress levels and stress states reflect different constitutive properties of rock materials.This characteristic must be considered in the stability testing and evaluation of underground engineering in-situ rock mass.
引文
[1]Xu J,Xian X F,Wang H,et al.Experimental study on rock de-formation characteristics under cycling loading and unloading con-ditions.Chin JRock Mech Eng,2006,25(Supp1):3040(许江,鲜学福,王鸿,等.循环加、卸载条件下岩石类材料变形特性的实验研究.岩石力学与工程学报,2006,25(增刊1):3040)
[2]Yin X C,Zhang H H.New development of the load-unload re-sponse ratio(LURR)theory.Recent DevWorldSeismol,2005,5:98(尹祥础,张晖辉.加卸载响应比的新进展.国际地震动态,2005,5:98)
[3]Yin X,Wang Y,Peng K,et al.Development of a newapproach to earthquake prediction:load/unload response ratio(LURR)theory.Pure Appl Geophys,2000,157:2365
[4]Li Y H,Yuan R F,Zhao X D.Effect of different stress paths on Kaiser effect of rock acoustic emission.J Northeastern Univ Nat Sci,2007,28(4):576(李元辉,袁瑞甫,赵兴东.不同应力路径对岩石声发射Kaiser效应的影响.东北大学学报:自然科学版,2007,28(4):576)
[5]Xu J,Li S C,Tang X J,et al.Rock fatigue damage evolution based on acoustic emission.JUniv Sci Technol Beijing,2009,31(1):19(许江,李树春,唐晓军,等.基于声发射的岩石疲劳损伤演化.北京科技大学学报,2009,31(1):19)
[6]Ji HG,Zhang TS,Cai MF,et al.Experimental study on concrete damage by dynamic measurement of acoustic emission.Chin J Rock Mech Eng,2000,19(2):165(纪洪广,张天森,蔡美峰,等.混凝土材料损伤的声发射动态检测试验研究.岩石力学与工程学报,2000,19(2):165)
[7]Zhao X D,Tang C A,Li Y H,et al.Study on AE activity charac-teristics under uniaxial compression loading.Chin J Rock Mech Eng,2006,25(Supp2):3673(赵兴东,唐春安,李元辉,等.花岗岩破裂全过程的声发射特性研究.岩石力学与工程学报,2006,25(增刊2):3673)
[8]Ji HG,Li Z D.Experimental study on the relationship of Kaiser and Felicity effect in concrete material.Appl Acoustics,1997,16(6):30(纪洪广,李造鼎.混凝土材料凯塞效应与Felicity效应关系的实验研究.应用声学,1997,16(6):30)
[9]Fan Y X.Damage:the mechanism of Kaiser effect.Chin JRock Mech Eng,2000,19(2):254(樊运晓.损伤:Kaiser效应记忆机理的探讨.岩石力学与工程学报,2000,19(2):254)
[10]Zhang R,Xie HP,Liu J F,et al.Experimental study on acoustic emission characteristics of rock failure under uniaxial multilevel loadings.Chin JRock Mech Eng,2006,25(12):2584(张茹,谢和平,刘建锋,等.单轴多级加载岩石破坏声发射特性试验研究.岩石力学与工程学报,2006,25(12):2584)
[11]Kong F B.Experimental Research on Dynamical Response of Loading Rock[Dissertation].Beijing:University of Science and Technology Beijing,2008(孔凡标.载荷岩体动力学响应特性试验研究[学位论文].北京:北京科技大学,2008)
[12]Qin S Q,Li Z D,Zhang Z Y,et al.Introduction to Rock Acoustic Emission Technology.Chengdu:Southwest Jiaotong University Press,1993(秦四清,李造鼎,张倬元,等.岩石声发射技术概论.成都:西南交通大学出版社,1993)
[2]Yin X C,Zhang H H.New development of the load-unload re-sponse ratio(LURR)theory.Recent DevWorldSeismol,2005,5:98(尹祥础,张晖辉.加卸载响应比的新进展.国际地震动态,2005,5:98)
[3]Yin X,Wang Y,Peng K,et al.Development of a newapproach to earthquake prediction:load/unload response ratio(LURR)theory.Pure Appl Geophys,2000,157:2365
[4]Li Y H,Yuan R F,Zhao X D.Effect of different stress paths on Kaiser effect of rock acoustic emission.J Northeastern Univ Nat Sci,2007,28(4):576(李元辉,袁瑞甫,赵兴东.不同应力路径对岩石声发射Kaiser效应的影响.东北大学学报:自然科学版,2007,28(4):576)
[5]Xu J,Li S C,Tang X J,et al.Rock fatigue damage evolution based on acoustic emission.JUniv Sci Technol Beijing,2009,31(1):19(许江,李树春,唐晓军,等.基于声发射的岩石疲劳损伤演化.北京科技大学学报,2009,31(1):19)
[6]Ji HG,Zhang TS,Cai MF,et al.Experimental study on concrete damage by dynamic measurement of acoustic emission.Chin J Rock Mech Eng,2000,19(2):165(纪洪广,张天森,蔡美峰,等.混凝土材料损伤的声发射动态检测试验研究.岩石力学与工程学报,2000,19(2):165)
[7]Zhao X D,Tang C A,Li Y H,et al.Study on AE activity charac-teristics under uniaxial compression loading.Chin J Rock Mech Eng,2006,25(Supp2):3673(赵兴东,唐春安,李元辉,等.花岗岩破裂全过程的声发射特性研究.岩石力学与工程学报,2006,25(增刊2):3673)
[8]Ji HG,Li Z D.Experimental study on the relationship of Kaiser and Felicity effect in concrete material.Appl Acoustics,1997,16(6):30(纪洪广,李造鼎.混凝土材料凯塞效应与Felicity效应关系的实验研究.应用声学,1997,16(6):30)
[9]Fan Y X.Damage:the mechanism of Kaiser effect.Chin JRock Mech Eng,2000,19(2):254(樊运晓.损伤:Kaiser效应记忆机理的探讨.岩石力学与工程学报,2000,19(2):254)
[10]Zhang R,Xie HP,Liu J F,et al.Experimental study on acoustic emission characteristics of rock failure under uniaxial multilevel loadings.Chin JRock Mech Eng,2006,25(12):2584(张茹,谢和平,刘建锋,等.单轴多级加载岩石破坏声发射特性试验研究.岩石力学与工程学报,2006,25(12):2584)
[11]Kong F B.Experimental Research on Dynamical Response of Loading Rock[Dissertation].Beijing:University of Science and Technology Beijing,2008(孔凡标.载荷岩体动力学响应特性试验研究[学位论文].北京:北京科技大学,2008)
[12]Qin S Q,Li Z D,Zhang Z Y,et al.Introduction to Rock Acoustic Emission Technology.Chengdu:Southwest Jiaotong University Press,1993(秦四清,李造鼎,张倬元,等.岩石声发射技术概论.成都:西南交通大学出版社,1993)
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