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

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英文篇名：REPRESENTATIVE ELEMETARY VOLUME REV——A FUNDAMENTAL PROBLEM FOR SELECTING THE MECHANICAL PARAMETERS OF JOINTED ROCKMASS 中文刊名：工程地质学报 英文刊名：JOURNAL OF ENGINEERING GEOLOGY 作者：周创兵 ; 於三大 英文作者：ZHOU Chuang bing (Wuhan University of Water Conservancy and Electropower Engineering ; Wuhan 430072) YU San da (Yangtze River Three Gorges project Development Corporation ; Yichan 443002) 中文关键词：岩体 ; 力学性质 ; 尺寸效应 ; 表征单元体 英文关键词：Rockmass ; Mechanical property ; Size effects ; Representative elementary volume. 出版日期：1999-12-20 机构：武汉水利电力大学!武汉430072,长江三峡开发总公司!宜昌443002 年：1999 期：04 出版单位：工程地质学报

摘要

本文论述了岩体力学性质的尺寸效应，提出了与岩体弹性参数相应的表征单元体ＲＥＶ的力学描述，根据中心极限定理推导了估算裂隙岩体ＲＥＶ 的数学表达式。研究表明，岩体表征单元体的大小是岩体力学性质尺寸效应的客观反映。本研究成果为合理选取岩体力学参数提供了一条新途径。
Abstract This paper deals with the size effects of mechanical properties of rockmasses. A mechanical description of the REV related to the elastic modulus of jointed rockmasses is proposed, and an expression of the REV based on the central limit theorem is suggested. The study shows that the REV can be used to reflect the size effect of mechanical properties of rockmasses. The result obtained in this work can provide a new way how to appropriately select the mechanical parameters of jointed rockmasses.

引文

[1]　Neum an S.P. Stochastic continuum representation of fractured rock perm eability as an alternative to the REVand fracture new ork concepts[A], 28th USSym posium on Rock Mech[C].1987. 533-561.
    [2]　周创兵,熊文林. 地应力对裂隙岩体渗透性的影响[J].地震学报,1997.19(2): 154-163.
    [3]　Gerrard C.M. Elastic m odels ofrock m asses having one, tw o and three sets ofjoints[J]. Int. J. Rock Mech.Sci& Geom ech. Abstr, 1982,19(1): 15-23.
    [4]　Zhou C.B. etal. Representative Elem entary Volum e relevantto perm eability ofjointed rock m asses[A]. 第九届国际岩土力学计算机方法会议文集[C].1997.