Numerical study of related factors affecting mechanical properties of fractured rock mass and its sensitivity analysis

被引：6
作者：
Zhou, Cong [1 ,2 ]
Gao, Wei [1 ]
Hu, Chengjie [1 ]
Chen, Xin [1 ]
Cui, Shuang [1 ]
机构：
[1] Hohai Univ, Sch Civil & Transportat Engn, Key Lab, Minist Educ Geomech & Embankment Engn, 1 Xikang Rd, Nanjing 210098, Jiangsu, Peoples R China
[2] Southeast Univ, Sch Civil Engn, Nanjing 211189, Jiangsu, Peoples R China
来源：
COMPUTATIONAL PARTICLE MECHANICS | 2023年 / 10卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Fractured rock mass; Mechanical behavior; Numerical simulation; Related factors; Sensitive analysis; FAILURE BEHAVIOR; DEFORMABILITY; STRENGTH; PARTICLE; MODEL;
D O I：
10.1007/s40571-022-00500-x
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
For the deep underground engineering, the fractured surrounding rock mass is the primary cause of the deformation of the underground structure. In this paper, the mechanical behavior of fractured rock mass samples under the influence of different related factors is studied by PFC3D software. Then, the sensitivity of the related factors is studied through the grey correlation analysis. It was found that the mechanical properties of fractured rock are mainly dependent on the lithology and fracture degree of the rock mass, which are the primary related factors affecting the peak and residual strength of the fractured rock, while the direction of the fracture plane and pore volume are the secondary related factors affecting its mechanical properties. Finally, combined with actual engineering, the importance of primary related factors is verified by studying the stability of a roadway in one deep coal mine.
引用
收藏
页码：369 / 386
页数：18
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