摘要
利用优化非协调元和杂交元分析了三河尖矿冲击矿压 ,并与 ANSYS程序的计算结果进行了比较 .认为优化有限元在冲击矿压乃至岩石材料的数值模拟中能给出更为精确的结果 ,也可减小大型计算中由于人力、机时所限粗分网格产生的误差 .分析中 ,采用了广义平均应力率准则来判断冲击点位置和冲击时刻 。
Incompatible element NH11 and hybrid stress element 18 β were employed to analyze rock burst occurring in coal face 9108 of Sanhejian Coal Mine. Compared with the results from ANSYS, the two optimized FEMs can execute more accurate numerical simulation in the research of rock burst as well as other rock problems and lessen the errors from inadequately meshing in huge calculations due to the limitation of labor and computer time. In addition, the criterion of averaged generalized stress rate was proposed and used to determine the site and moment of rock burst. The given conclusion is in accordance with the fact of coal face 9108 very well.
出处
《中国矿业大学学报》
EI
CAS
CSCD
北大核心
2001年第1期59-62,共4页
Journal of China University of Mining & Technology
基金
国家自然科学基金! ( 5 973 4 0 90 )
煤炭高校青年基金
