Mechanical behavior of rock mass under simulated materials shear testing

被引：0

作者：

Lin, Xing -Chao ^{[1
]}

Zhu, Gui-Na ^{[2
]}

Sun, Xing -Song ^{[1
]}

机构：

[1] State Key Lab Simulat & Regulat Water Cycle River, Beijing, Peoples R China

[2] Beijing Glory PKPM Technol Co, Beijing, Peoples R China

来源：

GRADEVINAR | 2024年 / 76卷 / 05期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

jointed rock mass; joint distribution; shear test; mechanical behaviour; failure process; CRACK COALESCENCE; FRACTURE; JOINTS; PROPAGATION; COMPRESSION; HOMOGENEITY; STRENGTH; TENSILE;

D O I：

10.14256/JCE.3222.2021

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

In this paper, the influence of joint distribution on the deformation and strength characteristics of rock mass is studied through direct shear tests of five typical distribution types of simulated materials including two joints. The spatial distribution pattern of joints determines the deformation and failure process and the final shape of rock mass, which is mainly manifested as lap failure between joints. By comparing the 25 stress -strain curves obtained from the test, the stress -strain curves are classified into five types. With the increase of the normal stress, the composite shear type gradually transforms to the shear type, and the shear type gradually transforms to the yield type. The joint distribution pattern has a great influence on the shear strength and the maximum difference is 64 %.

引用

页码：399 / 412

页数：14

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