摘要
指出运用卸荷岩体力学 ,研究三峡工程永久船闸岩石陡高边坡节理岩体特性的重要性 ,与岩体由原所受地应力作用到卸荷减压致拉的 (反 )应力应变的机理 阐明卸荷过程中 ,若体抗拉强度、变形模量、泊桑比等参数不是常量 ,是随岩体分化衰变的变量及其物理基础 ;形变显现弹性恢复应变、扩容 ,扩容蠕变的演绎特性 提出卸荷节理岩体的弹 -扩
The importance of applying the unloading rock mass mechanics to study characteristics of jointed rock mass of the high_steep rock slopes at the position of permanent shiplock of the Three Gorges project, is pointed. The stress_strain mechanism of the rock mass which is from the initial ground stress state becomes to unloading state, is explained. Then it is also explained that the rock_mass's physical parameters, such as tensile strength, deformation modulus, poisson's ratio etc.; are varying in the rock_mass decay development process. Constitutive equations for the elastic_dilatant_visco behaior of joint rock mass are presented.
基金
国家重点科技攻关课题 !( ( 85 ) 85 -16-0 3 -0 5 ( 3 ) )
关键词
卸荷岩体力学
弹-扩-粘性状
本构方程
节理岩体
unloading mechanics of rock mass
clastic_dilatant_visco behaviour
constitutive equations
