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

页码：472 / 476

页数：5