摘要
评价采空区建设场地的稳定性是对建设场地开发利用的前提,而构建一套合理的评价指标体系是进行稳定性评价的关键。首先从水文地质因素、建设场地自身因素、外界环境因素三方面海量选取评价指标,并遵循唯一性、目的性、可行性和可观测性原则对指标进行初次筛选;然后通过R聚类对评价指标进行分析,保证所筛选出的指标能全面评价建设场地的稳定性;最后通过变异系数筛选出对稳定性影响最大的指标,从而建立了采空区建设场地稳定性评价指标体系,并结合主成分分析与信息熵对评价指标体系的合理性进行检验。将所建立的评价指标筛选模型应用于渑栾高速采空区路段建设场地。结果表明:①采用R聚类和变异系数最终筛选出9个评价指标,从而建立了采空区建设场地稳定性评价体系;②所构建的评价指标体系用28%的海选指标反映了86%的原始信息,证明了指标体系构建的合理性。研究成果可为采空区建设场地的稳定性评价提供理论依据。
Evaluation of stability of the construction site on the goaf is the premise of development and utilization of construction site,and constructing a reasonable evaluation index system is the key to stability evaluation.Firstly,the evaluation indexes are selected from hydrogeological factors,construction site factors and external environmental factors,and the indexes are selected according to the principles of uniqueness,purpose,feasibility and observability.Then,R clustering analysis is carried out on the evaluation indexes to ensure that the selected indexes can comprehensively evaluate the stability of the construction site.Finally,the indexes with the greatest influence on the stability are screened out by the coefficient of variation,so as to establish the evaluation index system of construction site on the goaf stability,and the rationality of the evaluation index system is tested by combining principal component analysis and information entropy.The evaluation index screening model is applied to the construction site of Mianluan Expressway.The results show that:①Nine evaluation indexes are selected by R clustering and variation coefficient,and the stability evaluation system of the construction site on the goaf is established;②The constructed evaluation index system reflects 86%of the original information with 28%of the selection indexes,which proves the rationality of the index system construction.The research results can provide a theoretical basis for evaluating the stability of goaf construction site.
作者
王亮
郭庆彪
王磊
吕鑫
韩欣洋
王启春
WANG Liang;GUO Qingbiao;WANG Lei;LÜXin;HAN Xinyang;WANG Qichun(School of Spatial Informatics and Geomatics Engineering,Anhui University of Science and Technology,Huainan 232001,China;Key Laboratory of Aviation-aerospace-ground Cooperative Monitoring and Early Warning of Coal Mining-induced Disasters of Anhui Higher Education Institutes,Anhui University of Science and Technology,Huainan 232001,China;Coal Industry Engineering Research Center of Mining Area Environmental and Disaster Cooperative Monitoring,Anhui University of Science and Technology,Huainan 232001,China;Huainan City Construction and Development Planning and Design Institute Co.,Ltd.,Huainan 232001,China;Chongqing Vocational Institute of Engineering,Chongqing 402260,China)
出处
《金属矿山》
CAS
北大核心
2022年第8期245-253,共9页
Metal Mine
基金
国家自然科学基金项目(编号:51904008)
安徽省重点研究与开发计划项目(编号:202104a07020014)
安徽省自然科学基金优青项目(编号:2108085Y20)
安徽理工大学研究生创新基金项目(编号:2021CX2143)
重庆市教委科学技术研究计划项目(编号:KJQN201903403)。
关键词
稳定性评价
指标筛选
R聚类
变异系数
主成分
信息熵
stability evaluation
index screening
R cluster
coefficient of variation
principal component
entropy
