关键词: 改进模糊层次分析, 半梯形分布函数, 煤矿采空区, 高压输电线路, 稳定性评价

Abstract: In order to ensure the safety of the construction of highvoltage transmission lines passing through the mine goaf site,it is urgent to carry out the stability analysis and evaluation of the tower foundation construction site along the line.Taking the 110 kV highvoltage transmission line of Shandong Tengzhou Photovoltaic Power Project,crossing the goaf site of Wangchao,Jinqiu and Binhu Coal Mine as an example,and based on the analysis of the structural stress of steel tower and the geological and mining conditions of goaf,nine evaluation indicators that affect the stability of the coal mine goaf site are selected to construct an analytic hierarchy model,and the FAHP (Fuzzy Analytic Hierarchy Process) is improved by the semitrapezoidal membership distribution function coupled with the weight ordering vector.Finally,comparing the evaluation results with the actual site stability survey of the overhead area of highvoltage transmission lines.The results show that the evaluation results of the proposed improved model are consistent with the actual goaf stability,which proves the feasibility of the improved FAHP applied to the site stability evaluation of extended highvoltage transmission lines.At the same time,the improved method can provide reference for site stability evaluation under similar engineering geological conditions.