Investigation of the long-term strength of Jinping marble rocks with experimental and numerical approaches

被引：27

作者：

Cui, Zhen ^{[1
,2
]}

Sheng, Qian ^{[1
]}

Leng, Xianlun ^{[1
]}

Ma, Yalina ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech, Wuhan 430071, Hubei, Peoples R China

[2] PowerChina Huadong Engn Corp Ltd, Hangzhou 310014, Zhejiang, Peoples R China

来源：

BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT | 2019年 / 78卷 / 02期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

Marble rock; Time-dependent strength; Static fatigue test; Driving stress ratio; Stress corrosion; STRESS-CORROSION; LAC; FAILURE;

D O I：

10.1007/s10064-017-1132-2

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

This work describes investigation of the long-term strength of marble rocks in a stability assessment of deeply buried Jinping headrace tunnels. First, a series of long-term axial compression tests were conducted, with which the fitted long-term strength curve for marble rocks was determined. Then, Potyondy's parallel-bonded stress corrosion (PSC) model was used to perform a numerical static fatigue test. The PSC parameters of the marble rocks were back-analyzed based upon the long-term loading tests. Finally, a small-scale Particle Flow Code (PFC)-based model was constructed for a headrace tunnel, and the long-term stability of the modeled tunnel was assessed.

引用

页码：877 / 882

页数：6

共 14 条

[1]

Chu WJ, 2014, SUMMARY REPORT TIME

[2]

Damjanac B, 2007, INT J ROCK MECH MIN, V44, P368, DOI 10.1016/j.ijrmms.2006.07.010

[3] Identifying crack initiation and propagation thresholds in brittle rock [J].