摘要
以某铜矿为例,简介无间柱连续采矿法。提出了基于MCS-ANN-FEM的改进的有限元Monte-Carlo法。通过无间柱连续采矿凿岩硐室点柱的强度和应力的计算,建立可靠性分析的隐式极限状态方程,然后运用基于MCS-ANN-FEM的改进的有限元Monte-Carlo分析方法,对点柱进行全面的可靠性分析和设计。
Non-pillar continuous mining (NPCM) is briefly introduced in an underground metal mine as an example of a new continuous mining method. The pillar of excavation room plays a critical role in the stability status of NPCM. Therefore, probabilistic method (reliability analysis method) is adopted to deal with the uncertainties in rock mass and ore body. By calculating the strength analytically and stress numerically of the pillar, the implicit limit state equation is established, which is different from general limit state equation. To carry out the reliability analysis of pillar, a new Monte-Carlo finite element method based on neural network is needed and presented. Reliability index is obtained to evaluate the pillar's performance. The results are proved to be correct by the mining engineers, and the new method is of good application effect and prospect.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2002年第4期459-465,共7页
Chinese Journal of Rock Mechanics and Engineering
基金
国家"九五"科技攻关计划资助项目(95-116-01-01-03)。
