复杂裂隙岩体力学特性的数值试验研究

蒋中明; 伍东卫; 赵海斌; 冯树荣

doi:10.3969/j.issn.1001-5485.2013.11.0142013,30(11):72-76

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长江科学院院报 ›› 2013, Vol. 30 ›› Issue (11) : 72-76. DOI: 10.3969/j.issn.1001-5485.2013.11.0142013,30(11):72-76

岩土工程

复杂裂隙岩体力学特性的数值试验研究

蒋中明^1a，1c，伍东卫^1b，赵海斌²，冯树荣²

作者信息 +

Numerical Test on Mechanical Behavior of Complicated Fractured Rock Mass

JIANG Zhong-ming^1,3, WU Dong-wei², ZHAO Hai-bin⁴, FENG Shu-rong⁴

Author information +

文章历史 +

摘要

复杂结构面的模拟方法是裂隙岩体数值试验的关键技术之一。首先，利用ANSYS软件前处理功能和FLAC3D软件灵活的接触面生成功能，探索复杂裂隙岩体数值模型的构建方法;其次，利用数值试验方法对多结构面层状及柱状岩体的力学性质进行了单轴压缩研究，揭示了复杂层状及柱状岩体弹性模量及抗压强度的结构面倾角效应和尺寸效应，以及复杂岩体应力应变关系存在的差异性。数值试验结果表明，相同受力条件下结构面倾角的大小对裂隙岩体的变形特性有一定的影响，层状岩体或柱状岩体的单轴抗压强度及弹性模量会随试件尺寸的增大而变小并逐步趋向稳定。

Abstract

The modeling of complex structural planes in rock mass is a key technique in the numerical test of fractured rock mass. A numerical model for the structural planes in rock mass is established by means of the pre-processing of ANSYS software and the flexible interface generation of FLAC^3D software. The model is employed to numerically simulate the mechanical behaviors of layered and columnar rock masses with complex structural planes under uniaxial compression. The regularity of structural plane’s dip angle and specimen’s size respectively affecting the elastic modulus and compression strength of layered and columnar rock mass is obtained. The relations between stress and strain of different rock masses are different. The result also shows that under the same stress, the dip angle of structural plane has influence on the deformation behavior of fractured rock mass. The uniaxial compressive strength and elastic modulus of layered and columnar rock mass decrease and then gradually stabilize with the increase of specimen size.

导出引用

蒋中明，伍东卫，赵海斌，冯树荣. 复杂裂隙岩体力学特性的数值试验研究[J]. 长江科学院院报. 2013, 30(11): 72-76 https://doi.org/10.3969/j.issn.1001-5485.2013.11.0142013,30(11):72-76

JIANG Zhong-ming, WU Dong-wei, ZHAO Hai-bin, FENG Shu-rong. Numerical Test on Mechanical Behavior of Complicated Fractured Rock Mass[J]. Journal of Changjiang River Scientific Research Institute. 2013, 30(11): 72-76 https://doi.org/10.3969/j.issn.1001-5485.2013.11.0142013,30(11):72-76

中图分类号： TU443

参考文献

[1] 李德伦,王恩林,梁一鸿.构造地质学[M]. 北京:地质出版社,1999.(LI De-lun, WANG En-lin, LIANG Yi-hong. Structural Geology [M]. Beijing: Geological Publishing House,1999.(in Chinese))
[2] 陈新,廖志红,李德建.节理倾角及连通率对岩体强度、变形影响的单轴压缩试验研究[J].岩土工程学报,2011,30(4): 781-789.(CHEN Xin,LIAO Zhi-hong, LI De-jian. Experimental Study of Effects of Joint Inclination Angle and Connectivity Rate on Strength and Deformation Properties of Rock Massed under Uniaxial Compression [J]. Rock and Soil Mechanics, 2011, 30(4): 781-789.(in Chinese))
[3] 王学滨.节理倾角对单节理岩样变形破坏影响的数值模拟[J].四川大学学报,2006,38(2): 24-29.(WANG Xue-bin. Effect of Joint Inclination on Deformation and Failure of Rock Specimen with a Single Joint in Plane Strain Compression[J]. Journal of Sichuan University, 2006,38(2): 24-29.(in Chinese))
[4] 张志刚.节理岩体强度确定方法及其各向异性特征研究[D]. 北京:北京交通大学,2007.(ZHANG Zhi-gang. Methods of Determining the Strength of Jointed Rock Mass and the Anisotropic Characters[D]. Beijing: Beijing Jiaotong University, 2007.(in Chinese))
[5] 王毅, 聂德新,张景科,等.岩体裂隙化程度与岩体变形参数的关系研究[J].岩石力学与工程学报,2003, 22(增2):2572-2574.(WANG Yi,NIE De-xin, ZHANG Jing-ke, et al. Relation between Development Degree of Joints and Deformation Parameters of Rock Mass[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22 (Sup.2): 2572-2574.(in Chinese))
[6] 李杭州, 廖红建,冯夏庭,等.基于统一强度理论分析不连续面对岩体强度的影响[J].岩土力学,2006,27(11):1997-2000.(LI Hang-zhou, LIAO Hong-jian, FENG Xia-ting, et al. Analysis of Influence of Discontinuous Plane on Strength of Rock Mass Based on Unified Strength Theory[J]. Rock and Soil Mechanics, 2006, 27(11): 1997-2000.(in Chinese))
[7] 安民, 张红亮,尹小涛.基于数值实验的节理岩体变形特性尺寸效应[J].武汉大学学报(工学版),2008, 41(2): 73-77.(AN Min, ZHANG Hong-liang, YIN Xiao-tao. Scale Effect on Deformation Characteristics of Jointed Rock Mass Based on Numerical Test [J]. Engineering Journal of Wuhan University, 2008,41(2): 73-77.(in Chinese))
[8] 何忠明,彭振斌,曹平,等.层状岩体单轴压缩试验分析与数值模拟[J].中南大学学报(自然科学版),2010,41(5):1906-1912.(HE Zhong-ming, PENG Zhen-bin, CAO Ping, et al. Test and Numerical Simulation for Stratified Rock Mass under Uniaxial Compression[J]. Journal of Central South University (Science and Technology), 2010 ,41(5): 1906-1912.(in Chinese))
[9] 周莲君,彭振斌,何忠明,等. 层状岩体压缩强度尺寸效应的数值分析[J].工业建筑,2009,39(5):81-83.(ZHOU Lian-jun, PENG Zhen-bin, HE Zhong-ming, et al. Numerical Analysis for Size Effect of Stratified Rock Mass under Compression[J]. Industrial Construction, 2009, 39(5): 81-83.(in Chinese))
[10]向文飞. 裂隙岩体表征单元体及力学特性尺寸效应研究[D].武汉:武汉大学,2005.(XIANG Wen-fei. Representative Elementary Volume of Fractured Rock Masses and the Size Effect of Mechanical Properties[D]. Wuhan: Wuhan University, 2005.(in Chinese))