投影寻踪与NC模型在岩爆倾向性研究中的应用  

Study on Prediction of Rockburst Tendency Based on Projection Pursuit and Normal Cloud Model

作　　者：宁艳红[1] 

机构地区：[1]内蒙古建筑职业技术学院建筑工程学院,内蒙古呼和浩特010030

出　　处：《筑路机械与施工机械化》2016年第4期104-107,共4页Road Machinery & Construction Mechanization

基　　金：交通运输部西部交通建设科技项目(20113188051090)

摘　　要：针对深埋隧洞岩爆分级预测问题,引入云模型理论建立了基于PPA-正态云的岩爆分级预测模型方法。在综合分析影响岩爆发生的相关因素的基础上,采用投影寻踪分析确定各指标权重,由云模型正向发生器计算各指标的确定度并生成相应的云图,并以国内外7个深埋隧洞工程为例建模计算。结果表明该预测方法可以得出准确的结果。A model based on normal cloud model and projection pursuit analysis was established to forecast rockburst of deep-lying tunnels.Four factors were chosen as the assessment indicators for intensity evaluation,including the elastic strain energy index,the ratio of uniaxial compressive strength and tensile strength,the ratio of tangential stress and uniaxial compressive strength,and the rock brittleness index.Parameters of the cloud model and evaluation grade were calculated with the chosen assessment indicators,and the indicators weight was calculated based on projection pursuit analysis.The result indicates that this method can reach an accurate conclusion.

关 键 词：岩爆 云模型 投影寻踪 烈度分级 

分 类 号：U455.6[建筑科学—桥梁与隧道工程]