LONG-TERM CREEP BEHAVIOR OF DEEP-BURIED MARBLE UNDER DIFFERENT CONFINING PRESSURES

被引:2
|
作者
Zha, Ersheng [1 ,2 ]
Zhang, Ru [1 ,2 ]
Zhang, Zetian [1 ,2 ]
Ren, Li [3 ]
Zhang, Wenju [4 ]
Jia, Zheqiang [1 ,2 ]
Liu, Yang [3 ]
机构
[1] Sichuan Univ, State Key Lab Hydraul & Mt River Engn, Chengdu, Sichuan, Peoples R China
[2] Sichuan Univ, Coll Water Resource & Hydropower, Chengdu, Sichuan, Peoples R China
[3] Sichuan Univ, Minist Educ, Key Lab Deep Underground Sci & Engn, Chengdu, Sichuan, Peoples R China
[4] Southwest Municipal Engn Design & Res Inst China, Chengdu, Sichuan, Peoples R China
来源
THERMAL SCIENCE | 2019年 / 23卷
基金
美国国家科学基金会;
关键词
different confining pressures; deep-buried; marble; long-term; creep mechanical behavior; TESTS; GRANITE; ROCKS;
D O I
10.2298/TSCI180615078Z
中图分类号
O414.1 [热力学];
学科分类号
摘要
To explore the long-term creep behavior of deep rock, the long-term tri-axial creep mechanical behavior of the rock under different confining pressures has been carried out. The results show that the instantaneous strain and creep strain of the high confining pressure specimen are significantly higher than that of the low confining pressure specimen under high deviatoric stress. By analyzing the failure characteristics of different confining pressure specimens, it is found that with the increase of the confining pressure, the creep failure characteristics of the marble transforms from tensile failure to shear failure. These research results have certain reference significance for the long-term stability analysis of the deep underground caverns.
引用
收藏
页码:S653 / S660
页数:8
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