收藏本站
收藏 | 投稿 | 手机打开
二维码
手机客户端打开本文

Numerical analysis of soil-rock mixture's meso-mechanics based on biaxial test

张海洋  徐文杰  于玉贞  
【摘要】:Soil-rock mixture(S-RM)is a widely distributed geotechnical medium composed of "soil" and "rock block" different both in size and strength. Internal rock blocks form special and variable meso-structural characteristics of S-RM. The objective of this work was to study the control mechanism of meso-structural characteristics on mechanical properties of S-RM. For S-RM containing randomly generated polygonal rock blocks, a series of biaxial tests based on DEM were conducted. On the basis of research on the effects of rock blocks' breakability and sample lateral boundary type(rigid, flexible) on macroscopic mechanical behavior of S-RM, an expanded Mohr-Coulomb criterion in power function form was proposed to represent the strength envelop. At the mesoscopic level, the variations of meso-structure such as rotation of rock block, and the formation mechanism and evolution process of the shear band during tests were investigated. The results show that for S-RM with a high content of rock block, translation, rotating and breakage of rock blocks have crucial effects on mechanical behavior of S-RM. The formation and location of the shear band inside S-RM sample are also controlled by breakability and arrangement of rock blocks.

知网文化
【相似文献】
中国期刊全文数据库 前20条
1 杨更社;The advance and development of damage measurement technique of rock[J];Journal of Coal Science & Engineering(China);2003年02期
2 ;Design,construction and mechanical behavior of relics of complete large Longyou rock caverns carved in argillaceous siltstone ground[J];Journal of Rock Mechanics and Geotechnical Engineering;2011年02期
3 ;Determination of mechanical parameters for jointed rock masses[J];Journal of Rock Mechanics and Geotechnical Engineering;2011年S1期
4 李哲,张如柏;RANDOM SUBSTITUTION EFFECT OF LIGAND HYDROXY TETRAHEDRA IN MANGANOSICKLERITE[J];Chinese Science Bulletin;1989年13期
5 ;The gathering laws of fracture water in hard rock[J];Journal of Geoscientific Research in Northeast Asia;1998年01期
6 陆阳泉,赵家骝,钱家栋,王玉祥,刘建毅;Some results of modeling D-D seismogenic pattern by the fracture model experiment of large-scale rock samples(I)[J];Acta Seismologica Sinica(English Edition);1998年02期
7 杜修力;王进廷;;Seismic response analysis of arch dam-water-rock foundation systems[J];Earthquake Engineering and Engineering Vibration;2004年02期
8 ;Stochastic structural model of rock and soil aggregates by continuum-based discrete element method[J];Science in China(Series E:Technological Sciences);2005年S1期
9 袁海平;曹平;许万忠;;Mechanism study on subcritical crack growth of flabby and intricate ore rock[J];Transactions of Nonferrous Metals Society of China;2006年03期
10 ;Exploration and safety evaluation on Panzhihua iron barren rock with physical geographical methods[J];Chinese Journal of Geochemistry;2006年S1期
11 ;The theoretical study on diagonal wave interaction with perforated-wall breakwater with rock fill[J];Acta Oceanologica Sinica;2009年06期
12 ;Numerical analysis on thermal conductivity of poly-mineral rock[J];Earthquake Science;2010年03期
13 ;Numerical investigation on the sensitivity of jointed rock mass strength to various factors[J];Mining Science and Technology;2010年04期
14 陈颙,姚孝新,耿乃光;STRESS PATH,STRENGTH AND DILATANCY OF ROCKS[J];Science in China,Ser.A;1980年04期
15 陈顒,郑捷,郭继光,阎虹;APPLICATION OF PULSE-LASER HOLOGRAPHIC INTERFEROMETRY TO THE RESEARCH ON ROCK MECHANICS[J];Science Bulletin;1985年04期
16 杨升田;AN ANALYTICAL METHOD IN DYNAMICAL ANALYSIS OF THE ROCK CAVITY[J];Applied Mathematics and Mechanics(English Edition);1987年01期
17 郭自强,周大庄,马福胜,施行觉,席道瑛,程纯杰,周志文;ELECTRON EMISSION DURING ROCK FRACTURE[J];Science Bulletin;1987年18期
18 陶振宇,莫海鸿;AN APPROACH TO CRITERION OF ROCK STRENGTH[J];Science Bulletin;1987年07期
19 谭以安;ROCKBURSTING CHARACTERISTICS AND STRUCTURAL EFFECTS OF ROCK MASS[J];Science in China,Ser.B;1992年08期
20 柴敬;魏世明;刘金瑄;;Study on rock deformation monitoring using fiber Bragg grating in simulation experiment[J];Journal of Coal Science & Engineering(China);2006年02期
中国重要会议论文全文数据库 前10条
1 ;Design,construction and mechanical behavior of relics of complete large Longyou rock caverns carved in argillaceous siltstone ground[A];中国科学院地质与地球物理研究所第11届(2011年度)学术年会论文集(中)[C];2012年
2 ;Assessment of the degree of reinforcement demand(DRD) for rock slope projects--principles and a case example application[A];中国科学院地质与地球物理研究所2006年论文摘要集[C];2007年
3 ;XI'AN INSTITUTE OF GEOLOGY AND MINERAL RESOURCES ACHIEVEMENTS OF RESEARCH[A];中国地质科学院文集(1982中英文合订本)[C];1985年
4 YANG Shangyu;YAN Yifei;XU Zhiqian;YANG Xiujuan;;Studies on Rock mechanical characteristics testing and drill Bit's rock-breaking efficiency in deep wells[A];2012年海峡两岸破坏科学/材料试验学术会议论文摘要集[C];2012年
5 PENG Bo;Li Guorong;ZHAO Yong;ZHAO Yingquan;Hu Jingjing;LIAO Tai-ping;;A new method of source rock prediction based on Q cluster in YB region,northern Sichuan basin[A];第二届全国特殊气藏开发技术研讨会优秀论文集[C];2013年
6 ;Some geomechanical properties of soil-rock mixtures in the Hutiao Gorge area,China[A];中国科学院地质与地球物理研究所2007学术论文汇编(第四卷)[C];2008年
7 ;Discussion of the paper“Stress state analysis of a collapsed overhanging rock slab:A case study”by P.Paronuzzi and W.Serafini,Engineering Geology,108:65-75(2009)[A];中国科学院地质与地球物理研究所第11届(2011年度)学术年会论文集(中)[C];2012年
8 Benfu YU;Yifei YAN;Lisong ZHANG;Xiangzhen YAN;;Stability analysis of the oil surrounding rock in oil storage cavern by Modified Hoek-Brown strength reduction method[A];2012年海峡两岸破坏科学/材料试验学术会议论文摘要集[C];2012年
9 L.Q.Zhang;J.Zhou;X.L.Wang;;Back analysis of long-term tensile strength by using in-situ rock ruptures:Method comparison and numerical examples[A];中国科学院地质与地球物理研究所2012年度(第12届)学术论文汇编——工程地质与水资源研究室[C];2013年
10 ;Principles of Statistical Mechanics of Rock Masses[A];Rock Mechanics in China——Application of Computer Methods in Rock Mechanics[C];1995年
中国博士学位论文全文数据库 前1条
1 王晓明;ROCK信号转导在大鼠慢性脑低灌注致认知功能障碍中作用研究[D];吉林大学;2009年
中国硕士学位论文全文数据库 前2条
1 刘正姣;ROCK抑制剂对脑出血大鼠脑白质损伤的影响[D];山西医科大学;2011年
2 王晋垚;输尿管部分梗阻家兔Rock-Ⅱ激酶在输尿管平滑肌组织中表达及意义[D];山西医科大学;2009年
中国知网广告投放
 快捷付款方式  订购知网充值卡  订购热线  帮助中心
  • 400-819-9993
  • 010-62982499
  • 010-62783978