基于PCA-RA和云模型的采空区建设场地稳定性评价  

Stability Evaluation of Construction Site above a Goaf Based on PCA-RA and Cloud Model

作　　者：赵乐乐 王亮[2] 侯起阳 万战胜 郭庆彪 ZHAO Lele;WANG Liang;HOU Qiyang;WAN Zhansheng;GUO Qingbiao(Henan Xinrong Expressway Construction Co.,Ltd.,Luoyang 471000,China;School of Spatial Informatics and Geomatics Engineering,Anhui University of Science&Technology,Huainan 232001,China;Henan Provincial Communications Planning&Design Institute Co.,Ltd.,Zhengzhou 450000,China)

机构地区：[1]河南省新融高速公路建设有限公司,河南洛阳471000 [2]安徽理工大学空间信息与测绘工程学院,安徽淮南232001 [3]河南省交通规划设计研究院股份有限公司,河南郑州450000

出　　处：《金属矿山》2022年第3期197-204,共8页Metal Mine

基　　金：国家自然科学基金项目(编号:51904008);河南省交通运输厅科技项目(编号:2019J-2-15)。

摘　　要：采空区地表的残余变形会给上方高速公路带来风险,严重威胁着其运营安全,精准评价采空区建设场地的稳定性对于上方高速公路规避风险具有重要意义。首先,利用主成分分析-残差分析(PCA-RA)对采空区建设场地稳定性的众多评价指标进行降维分析,提取出贡献率最大的几个主成分,能够消除评价指标之间的冗余,减少评价过程的工作量;然后采用云模型确定主成分的隶属度,并基于最大隶属度原则确定出建设场地的稳定性等级;最后引入模糊熵理论确定评价结果的复杂度,并将所建模型应用于渑栾高速公路采空区路段建设场地稳定性评价中。结果表明:①评价指标数据经主成分分析降维后,前4个主成分的累计贡献率为87.278%,能够完整地表征原始指标的信息;②渑栾高速采空区路段建设场地的稳定性状态以稳定、基本稳定为主。研究成果可为后期建设场地治理与监测提供理论依据,确保高速公路运营安全。The residual deformation of the surface on the goaf will bring risks to the expressway above the construction site and seriously threaten the operation safety of the expressway.It is of great significance to accurately evaluate the stability of the construction site of the goaf for the overhead expressway to avoid risks.First of all,principal component analysis and residual(PCA-RA)are used to carry out dimensionality reduction analysis on the stability evaluation indicators of the construction site on the goaf,and several principal components with the largest contribution rate are extracted,which can eliminate the redundancy among evaluation indicators and reduce the workload of evaluation process.Secondly,the cloud model is used to determine the membership degree of principal components,and the stability level of construction site can be evaluated based on the principal of maximum membership degree.Finally,the fuzzy entropy is introduced to determine the complexity of the evaluation results.The model established in this paper is used for the stability evaluation of the construciton site of Mianluan Expressway.The results show that:①The first four principal components of cumulative contribution rate is 87.278%after dimensionality of the evaluation indicators data by principal component analysis,which can completely represent the information of the original indicators;②The stability state of the construction site on the goaf of Mianluan Expressway is mainly stable and basically stable.The research results can provide a theoretical basis for the later management and monitoring of the construction site and ensure the operation safety of the expressway.

关 键 词：采空区 主成分分析 残差分析 云模型 模糊熵 

分 类 号：TD73[矿业工程—矿井通风与安全]