金矿采场结构参数混沌优化  

Chaotic Optimization of Structural Parameters in Gold Mining Field

作　　者：刘钦[1,2] 刘志祥[3] 刘爱华[3] 李威[2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]山东黄金集团三山岛金矿,山东莱州261442 [3]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《采矿与安全工程学报》2010年第4期548-552,共5页Journal of Mining & Safety Engineering

基　　金：国家重点基础研究发展计划(973)项目(2007CB209400);国家"十一五"科技支撑计划项目(2007BAB08B01);教育部博士点基金项目(200805331147)

摘　　要：为了研究三山岛金矿新立矿区采场稳定性并确定合理的采场结构参数,采用ANSYS有限元数值模拟方法,计算了不同采场结构参数的围岩应力、应变状况,并探索了矿柱在采矿过程中的力学作用.研究表明,采场充填后给矿柱和上下盘围岩一个侧向约束力,有利于提高矿柱稳定性和控制采区地压.根据数值模拟结果,建立了新立矿区采场结构参数优化目标函数与矿体水平厚度、矿柱截面尺寸和矿柱跨度等因素的神经网络模型,采用混沌优化方法,得出了不同开采技术条件下的采场最优结构参数,并将优化的采场结构参数应用于工程实际,目前已安全采出矿石量6万多吨,取得了较好的效果.该研究为工程领域参数优化设计提供了一种新的方法.In order to study the stope stability and ascertain the rational stope structure parameters in Xinli mining field of Sanshandao Gold Mine,the stress and strain conditions in different structural parameters of stope are calculated with the method of ANSYS finite element numerical simulation,and the mechanical effects of pillar in the course of mining are explored.The studies show that lateralrestriction stresses to the pillar and wall rock in upper and lower are given by the filling body,which is favorable to improve the stability of pillar and control the pressure of mining area.According to the simulation results,a neural network model which can embody the optimization objective function of stope structure parameters with the level thickness of ore bodies,the cross-section size and the span of pillar in Xinli Zone of Sanshandao Gold Mine is established.Using chaotic optimization algorithm,the optimal stope structural parameters of different mining conditions are obtained and used in mining engineering practice,with more than 60 000 tons of ores being mined,achieving a good economic result.The study provides a new approach for the parameters optimization in engineering design.

关 键 词：数值模拟 采场结构参数 神经网络 混沌优化 

分 类 号：TD853.35[矿业工程—金属矿开采]