ON EFFECT OF NON-PERSISTENT JOINTS ON HYDROMECHANICAL BEHAVIOR OF JOINTED ROCK MASS IN UDEC

被引：0
|
作者：
Wu Yuexiu [1 ]
Liu Quansheng [1 ,2 ]
Liu Xiaoyan [1 ]
机构：
[1] Wuhan Univ, Sch Civil & Architectural Engn, Key Lab Rock Mech Hydraul Struct Engn, Wuhan 430072, Peoples R China
[2] CAS Wuhan, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan, Hubei, Peoples R China
来源：
ENGINEERING PLASTICITY AND ITS APPLICATIONS | 2010年
关键词：
Non-persistent joint; Uniaxial compressive test; Hydro-Mechanical characteristic; Damage variable; Representative element volume; Permeability;
D O I：
暂无
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
The existence of non-persistent joints will weaken the strength of rock mass and affect the mechanical behavior of rock mass which leads to change in the permeability of rock mass. A damage variable is introduced to account for weakened effect on strength of rock mass. It is defined as the ratio of the sum of actual length of all non-persistent joints in a block to the sum of length of all fictitious joints which are extensions of all non-persistent joints to the boundary of the block. According to the damage variable, the elastic modulus is deducted. Based on UDEC, a subroutine named damage_var is generated to calculate the damage variable and assign new properties to each block. Finally, numerical uniaxial compressive tests and the Hydro-Mechanical (HM) coupling calculations are carried out to study the effect of non-persistent joints.
引用
收藏
页码：472 / 476
页数：5
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