基于模糊多目标决策失稳巷道加固分析
Analysis on Reinforcement Method of Unstable Tunnel by Fuzzy Multi-objective Decision-making
王欣儒 1杨志军1
作者信息
摘要
针对某金矿的地质状况,用模糊最优归类法对失稳巷道进行了岩体质量评价。巷道围岩岩体整体稳定性可以分为3个区域（安全区、危险区、塌陷区）,RQD分别为87%、78%和57%,Rc分别为240.1、137.1和85.4 MPa。通过模糊最优归类法确定了安全区围岩稳定性属于第Ⅲ等级,危险区属于第Ⅲ等级且偏向第Ⅳ等级,塌陷区属于第Ⅳ等级。在此基础上,运用模糊多目标决策方法对危险区和塌陷区的加固方案进行了优化,运用数值模拟计算方法对加固方案进行了验证,并分析了加固效果,为现场施工提供了科学依据。
Abstract
According to the geology of a gold deposit,rock quality evaluation was done on unstable tunnel by using fuzzy optimal classification method.The stability of surrounding rock mass of tunnel could divided into three zones： safety zone,dangerous zone and unstable zone.The RQD was 87%,78% and 57%,respectively,Rc was 240.1、137.1 and 85.4MPa,respectively,Fuzzy optimal classification method confirmed that surrounding rock mass stability at safety zone was Ⅲ.And dangerous zone was between Ⅲ to Ⅳ and unstable zone was Ⅳ.On the basis of this,reinforcement scheme of dangerous and unstable zone were optimized by using fuzzy multiple objectives decision making,and it was verified by using numerical simulation method.The reinforcement effect was analyzed.It can provide a certain scientific basis for further field construction.
关键词
最优归类法/岩体质量/模糊多目标决策/数值模拟Key words
Optimal classification method/Rock mass quality/Fuzzy multi-objective decision making/Numerical simulation引用本文复制引用
出版年
2012
NETL
NSTL
万方数据