Study on Creep Failure Characteristics of Jointed Soft Rock

被引：0

作者：

Zhao, Hongbao ^{[1
]}

Wan, Huhu ^{[1
]}

Liu, Shaoqiang ^{[1
]}

Cheng, Hui ^{[1
]}

Chen, Chaonan ^{[1
]}

机构：

[1] China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China

来源：

JOURNAL OF MINING SCIENCE | 2024年 / 60卷 / 05期

关键词：

soft rock; joint; shear creep; discrete element method; MODEL; TESTS;

D O I：

10.1134/S1062739124050065

中图分类号：

TD [矿业工程];

学科分类号：

0819 ;

摘要：

The shear creep failure mechanism of jointed soft rocks is a critical issue in geotechnical engineering. Using the discrete element method, a numerical model of jointed soft rocks was constructed to simulate shear creep under varying joint roughness, normal stress and shear directions. The effects of multiple factors on the creep deformation of soft rocks were then analyzed. Results indicate that the amount of creep deformation in soft rocks significantly decreases with an increase in joint roughness and with an increase in normal stress. However, the influence of shear direction on creep deformation is relatively minor. This study lays a foundation for further research into the creep behavior of soft rocks.

引用

页码：758 / 769

页数：12

共 29 条

[1]

Bryan L.M., Fluid Mechanics, Tritech Digital Media, (2018)

[2]

Sun J., Rock rheological mechanics and its advance in engineering applications, Chinese J. Rock Mech. Eng, 26, pp. 1081-1106, (2007)

[3]

Li Y.-L., Yu H.-C., Liu H.-D., Study of creep constitutive model of silty mudstone under triaxial compression, Rock and Soil Mechanics, 33, pp. 2035-2040, (2012)

[4]

Kabwe E., Verification and implementation of a creep model considering the duvautlion overstress function, Mining, Metallurgy & Exploration, 38, pp. 1761-1771, (2021)

[5]

Griggs D., Creep of Rocks, J. Geol, 47, pp. 225-251, (1939)

[6]

Zhang Z.L., Xu W.Y., Wang W., Et al., Triaxial creep tests of rock from the compressive zone of dam foundation in Xiangjiaba Hydropower Station, International Journal of Rock Mechanics and Mining Sciences, 50, pp. 133-139, (2012)

[7]

Yang S.-Q., Cheng L., Nonstationary and nonlinear viscoelastic shear creep model for shale, International Journal of Rock Mechanics and Mining Sciences, 48, pp. 1011-1020, (2011)

[8]

Li J.-L., Zhu L.-Y., Zhou K.-P., Et al., Nonlinear creep damage model of sandstone under freeze-thaw cycle, Journal of Central South University, 28, pp. 954-967, (2021)

[9]

Tulinov R., Molokov L., Role of Joint Filling Material in Shear Strength of Rocks, Symp. Int, (1971)

[10]

Indraratna B., Haque A., Aziz N., Shear behaviour of idealized infilled joints under constant normal stiffness, Geotechnique, 49, pp. 331-355, (1999)

← 1 2 3 →