Dynamic-static coupling analysis on rockburst mechanism in jointed rock mass

被引：38

作者：

Jia Peng ^{[1
]}

Zhu Wan-cheng ^{[1
]}

机构：

[1] Northeastern Univ, Sch Resources & Civil Engn, Shenyang 110004, Peoples R China

来源：

JOURNAL OF CENTRAL SOUTH UNIVERSITY | 2012年 / 19卷 / 11期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

rockburst; dynamic disturbance; numerical simulation; jointed rock mass; NUMERICAL-SIMULATION;

D O I：

10.1007/s11771-012-1405-7

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A numerical code called RFPA-Dynamics was used to study the rockburst mechanism under dynamic load based on coupled static-dynamic analysis. The results show that dynamic disturbance has a very distinct triggering effect on rockburst. Under the dynamic load, rockburst is motivated by tensile stress formed by the overlapping of dynamic waves in the form of instantaneous open and cutting through of cracks in weak planes and pre-damaged areas. Meanwhile, the orientation of joint sets has an obvious leading effect on rockburst locations. Finally, a higher initial static stress state before dynamic loading can cause more pre-damaged area, thus leading to a larger rockburst scope.

引用

页码：3285 / 3290

页数：6

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