多组贯穿裂隙岩体变形特性研究

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (0 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要天然岩体通常含有多组平行分布的贯穿裂隙，因此，在工程设计和围岩的稳定性分析中，研究多组贯穿裂隙岩体的变形及其变形特性具有重要意义。假设岩块为各向同性线弹性体，裂隙的应力与位移之间满足线性刚度关系，利用莫尔应力圆方法，建立多组贯穿裂隙岩体变形的计算模型。在此基础上，将裂隙岩体等效为各向异性连续体，给出裂隙岩体的等效弹性模量和等效泊松比，研究岩块和裂隙的材料和几何参数对岩体等效弹性模量和等效泊松比的影响。模型能较全面的考虑构成岩体的岩块和裂隙的材料参数与几何参数对岩体变形的影响，对预测岩体的变形和稳定性有一定的参考价值。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：岩石力学, 贯穿裂隙岩体, 变形特性, 等效弹性模量, 等效泊松比

Abstract：Natural rock mass usually contains multiple parallel distribution of persistent crack sets. It is important to study the deformation and deformation characteristic of rock mass with parallel distribution of persistent crack in engineering design and stability analysis of surrounding rock mass. On the assumption that rock is isotropic linear elastic body and the stress-displacement relation of crack is linear stiffness relation，the computational model of deformation of rock mass with multiple persistent crack sets is presented by the method of Mohr?s circle of stress. On this basis，the rock mass with cracks are equivalent to anisotropic continuous mass. Equivalent elastic modulus and equivalent poisson?s ratio are put forward. The effect of material parameters and geometry parameters of rock and crack to the equivalent elastic modulus and equivalent poisson?s ratio of rock mass with cracks is studied. The model can comprehensively consider the effect of material parameters and geometry parameters of rock and crack to the deformation of rock mass. So the model has some reference value in predicting deformation and stability of rock mass.

Key words： rock mechanics rock mass with multiple persistent crack sets deformation characteristic equivalent elastic modulus equivalent poisson,s ratio

收稿日期: 2011-02-14

引用本文:

韩建新1，2，李术才1，李树忱1，仝兴华1，李文婷1. 多组贯穿裂隙岩体变形特性研究[J]. 岩石力学与工程学报, 2011, 30(S1): 3319-3325.
HAN Jianxin1，2，LI Shucai1，LI Shuchen1，TONG Xinghua1，LI Wenting1. STUDY OF DEFORMATION CHARACTERISTIC OF ROCK MASS WITH MULTIPLE PERSISTENT CRACK SETS. , 2011, 30(S1): 3319-3325.

链接本文:

http://www.rockmech.org/CN/Y2011/V30/IS1/3319

[1]	GOODMAN R E，TAYLOR R L，BREKKE T L. A model for the mechanics of jointed rock[J]. Journal of the Soil Mechanics and Foundations Division，1968，94(3)：637-659. " target="_blank">
[2]	沈明荣. 岩体力学[M]. 上海：同济大学出版社，1998：91-92.(SHEN Mingrong. Mechanics of rock mass[M]. Shanghai：Tongji University Press，1998：91-92.(in Chinese)) " target="_blank">
[4]	HUNGR O，COATES D F. Deformability of joints and its relation to rock foundation settlements[J]. Canadian Geotechnical Journal，1978，15(2)：239-249. " target="_blank">
[6]	DERSHOWITZ W S. Jointed rock mass deformability—a probabilistic approach[R]. Massachusetts：Massachusetts Institute of Technology，1979. " target="_blank">
[7]	张武，张宏宪. 节理岩体弹性模型[J]. 岩土工程学报，1987，9(4)：33-44.(ZHANG Wu，ZHANG Hongxian. Elastic model of rock mass with joint[J]. Chinese Journal of Geotechnical Engineering，1987，9(4)：33-44.(in Chinese))
[9]	唐辉明，张宜虎，孙云志. 岩体等效变形参数研究[J]. 中国地质大学学报：地球科学，2007，32(3)：389-396.(TANG Huiming，ZHANG Yihu，SUN Yunzhi. A study of equivalent deformability parameter of rock mass[J]. Journal of China University of Geosciences：Earth Science，2007，32(3)：389-396.(in Chinese))
[10]	晏石林，黄玉盈，陈传尧. 贯通节理岩体等效模型与弹性参数确定[J]. 华中科技大学学报：自然科学版，2001，29(6)：60-63.(YAN Shilin，HUANG Yuying，CHEN Chuanyao. An equivalent model for jointed rock mass with persistent joint and its elastic parameters[J]. Journal of Huazhong University of Science and Technology：Natural Science，2001，29(6)：60-63.(in Chinese)) " target="_blank">
[5]	BURMAN B C，HAMMETT R D. Design of foundations in jointed rock masses[C]// Proceedings of the 2nd Australia Newzealand Conference on Geomechanics. [S.l.]：[s.n.]，1976：83-88. " target="_blank">
[8]	周维垣，杨延毅. 节理裂隙岩体损伤-断裂力学模型及其在岩体工程中的应用[J]. 岩石力学与工程学报，1991，10(1)：43-54.(ZHOU Weiheng，YANG Yanyi. Damage-fracture mechanical model of rock mass with joint and its apply in rock mass engineering[J].Chinese Journal of Rock Mechanics and Engineering，1991，10(1)：43-54.(in Chinese))
[11]	张贵科，徐卫亚. 节理岩体正交各向异性等效变形参数研究[J]. 岩土工程学报，2010，32(6)：908-915.(ZHANG Guike，XU Weiya. Orthotropic equivalent deformation parameters of jointed rock mass[J]. Chinese Journal of Geotechnical Engineering，2010，32(6)：908-915.(in Chinese))
[13]	胡云进，钱锐，速宝玉. 一种确定裂隙非饱和水力参数的数值模拟法[J]. 岩土工程学报，2001，23(3)：284-287.(HU Yunjin，QIAN Rui，SU Baoyu. A numerical simulation method of deciding unsaturated hydraulic parameter of creature[J]. Chinese Journal of Geotechnical Engineering，2001，23(3)：284-287.(in Chinese))
[3]	FRED H，KULHAWY M. Geomechanical model for rock foundation settlement[J]. Journal of the Geotechnical Engineering Division，1978，104(2)：211-227. " target="_blank">
[12]	周创兵，於三大. 论岩体表征单元体积REV——岩体力学参数取值的一个基本问题[J]. 工程地质学报，1999，7(4)：332-336.(ZHOU Chuangbing，YU Sanda. Research on representative element volume REV of rock mass——a basic value problem of rock mass mechanical parameter[J]. Journal of Engineering Geology，1999，7(4)：332-336.(in Chinese))