采场顶板稳定性动态工程分类的Fisher判别分析

基于Fisher判别分析理论, 综合考虑岩石介质条件、环境条件以及工程条件3大方面, 并遵循超前性与实用性原则, 选取采场的直接顶单轴抗压强度、岩石质量指标、煤体抗压强度、工作面推进速度及顶板水文状况5个因素作为判别分析的因子, 建立采场顶板稳定性动态分类的Fisher判别分析模型。将该方法应用于某采场顶板稳定性动态工程分类预测中, 以现场26组数据作为训练样本, 建立具体的Fisher判别函数, 回判估计的误判率极低, 并利用第一判别函数确定特定顶板合理的工作面推进速度范围, 指导工程实际施工。

Fisher Discriminant Analysis for Predicting Dynamic Engineering Classification of Stope Roof Stability

Based on the Fisher discriminant analysis and consideration of three major factors including rock property condition,environmental and engineering condition,a Fisher discriminant analysis model was established to predict the dynamic engineering classification of stope roof stability with uniaxial compressive strength of rock,RQD,compressive strength of coal mass,advancing speed of working face and hydrological condition of roof as five major factors for discriminant analysis.This method was adopted to predi...