外送线路穿越矿权区域地表形变监测与安全稳定性评价  

Surface deformation monitoring and safety and stability evaluation of electricity transmission line crossing mining rights area

作　　者：董建军 冯晓硕[1,2] 张莹 DONG Jianjun;FENG Xiaoshuo;ZHANG Ying(College of Safety Science and Engineering,Liaoning Technical University,Huludao Liaoning 125105,China;Key Laboratory of Mine Thermodynamic Disasters and Control of Ministry of Education,Liaoning Technical University,Huludao Liaoning 125105,China)

机构地区：[1]辽宁工程技术大学安全科学与工程学院,辽宁葫芦岛125105 [2]辽宁工程技术大学矿山热动力灾害与防治教育部重点实验室,辽宁葫芦岛125105

出　　处：《中国安全科学学报》2025年第2期203-211,共9页China Safety Science Journal

基　　金：国家自然科学基金面上项目资助(52474227);辽宁省自然科学基金面上项目资助(2023-MS-313)。

摘　　要：为解决老旧城区用地紧张和输电线路建设问题,以修武北外送变电站下伏采空区为研究对象,在明确外送变电站下伏采空区基本地质条件及开采情况的基础上,采用短基线集(SBAS)-合成孔径雷达干涉测量(InSAR)监测开展外送线路地表沉降发展特征的研究,量化分析外送线路穿越矿权区域地表沉降的演化特征,评判采空区地表沉降、地面倾斜以及地表曲率对变电站外送线路的影响程度。结果表明:研究区地表最大平均沉降速率为-53.6 mm/a,该区域所处位置与古汉山矿位置重合,沉陷与煤矿开采具有一致性;杆塔位置沉降速率处于-16.5~-0.3 mm/a,其中,11号和35号杆塔平均沉降速率明显大于其他位置,平均沉降速率分别为-15.88、-16.21 mm/a,通过形变规律历史追溯,最大累计沉降分别为-104.91、-106.97 mm。根据最不利原则,得出各区域杆塔年际形变速率的最不利点位在服役年限内的实际监测预测沉降量均小于400 mm。杆塔的最大倾斜和曲率为1.2 mm/m、0 mm/m^(2),均在规定的最小容许值内,外送线路穿越矿权区域地表处于安全稳定状态。In order to solve problems of land shortage and transmission line construction in the old urban area,taking the underground goaf of Xiuwu North power transmission substation as the research object,on the basis of clarifying the basic geological conditions and mining conditions of the underground goaf of the transmission substation,SBAS-InSAR monitoring was used to study the development characteristics of surface subsidence.The evolution characteristics of surface subsidence of the transmission line through the mining right area were quantitatively analyzed.The influence of goaf settlement,inclination and curvature on the transmission line of the substation was evaluated.The results show that the maximum average settlement rate of the surface of the study area is-53.6 mm/a,and the location of this area coincides with the location of Guhanshan mine,and the subsidence is consistent with coal mining,and the settlement rate of the tower position is between-16.5——0.3 mm/a.The average settlement rate of No.11 and No.35 towers are significantly greater than those of other positions,with the average settlement rates of-15.88 and-16.21 mm/a respectively.The historical tracing of the deformation law shows that the maximum cumulative subsidence occurs at the end of the monitoring period,which is-104.91 and-106.97 mm respectively.According to the most unfavorable principle,it is concluded that the actual monitoring and predicted settlement of the unfavorable points of the interannual deformation rate of the tower in each region during the service life is less than 400 mm,and the maximum inclination and curvature of the tower are 1.2 mm/m and the curvature is 0 mm/m^(2),which are all within the specified minimum allowable value.The surface of the transmission line crossing the mining rights area is in a safe and stable state.

关 键 词：外送线路 穿越矿权区域 地表形变监测 安全稳定性 采空区 短基线集(SBAS)-合成孔径雷达干涉测量(InSAR) 

分 类 号：X924.2[环境科学与工程—安全科学]