Catastrophe analysis on pillar instability considered mining effect

被引：7
|
作者：
Li, JT [1 ]
Cao, P [1 ]
机构：
[1] Cent S Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2005年 / 12卷 / 01期
关键词：
pillar; potential energy; cusp catastrophe; plastic area; relative stiffness; stability;
D O I：
10.1007/s11771-005-0213-8
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The instability of the pillar was discussed based on the potential energy principle and the cusp catastrophe theory, and a simplified mechanical model of the pillar was established considering the mining effect. The necessary-sufficient conditions, the jump value of displacement of pillar and the released energy expressions were deduced. The results show that the instability of the pillar is related to the properties of the rock, the external force and the relative stiffness of the elastic area to the plastic area. The instability of system is like to occur with the enlarging of the softening area
引用
收藏
页码：102 / 106
页数：5
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