崩塌滚石对高压输电线路铁塔的危险性评估  

Risk assessment of collapsed rock on high-voltage transmission line tower

作　　者：李浩言 岳灵平 江泓 陈家乾 孙峰 蒋峰 LI Haoyan;YUE Lingping;JIANG Hong;CHEN Jiaqian;SUN Feng;JIANG Feng(Transmission Inspection Center,Zhejiang Huzhou Electric Power Design Institute,Huzhou 313000,China;Huzhou Power Supply Company,State Grid Zhejiang Electric Power Company Limited,Huzhou 313000,China;School of Electrical and New Energy,Three Gorges University,Yichang 443002,China)

机构地区：[1]浙江湖州电力设计院输电运检中心,浙江湖州313000 [2]国网浙江省电力有限公司湖州供电公司,浙江湖州313000 [3]三峡大学电气与新能源学院,湖北宜昌443002

出　　处：《山东理工大学学报（自然科学版）》2021年第5期82-86,共5页Journal of Shandong University of Technology:Natural Science Edition

基　　金：浙江省科技型中小企业技术创新基金项目(2019-HUZJTKJ-12)。

摘　　要：为了减少山区滚石冲击导致铁塔失稳所带来的灾害,利用Rocfall软件建立模型边坡,对滚石的运动轨迹、弹跳高度、冲击动能进行模拟分析,并结合赫兹碰撞理论,用能量守恒定理和日本公式对滚石撞击铁塔时的最大冲击力进行理论估算,以此评估滚石对铁塔的危险性。计算结果显示铁塔塔腿承受的滚石冲击力约为3.6×10^(6)~2.55×10^(7) Pa,明显超出了铁塔所能承受的范围,同时通过模拟得出该坡面的最佳防治位置选在距离坡底25~75 m处较为合适。为研究铁塔的防护装置设计提供了理论基础,有利于铁塔的安全稳定运行。In order to reduce the disasters caused by the instability of the iron tower which attribute to the impact of rolling rocks in mountainous areas,this paper used Rocfall software to build a slope model to simulate and analyze the motion trajectory,bounce height,and impact kinetic energy of rolling rocks.And then combining the Hertz collision theory,the energy conservation law and the Japanese formula are used to make a theoretical estimation of the maximum impact force of a rolling stone hitting an iron tower.The calculation results show that the impact force of the rock on the tower legs is about 3.6×10^(6)~2.55×10^(7) Pa,which is obviously beyond the range that the tower can withstand.At the same time,the simulation results show that the best prevention and control position for the slope is selected at 25~75 m to the slope bottom.It provides a theoretical basis for the research on the design of the protective device of the iron tower,and it is beneficial to the safe and stable operation of the iron tower.

关 键 词：高压 滚石 输电线路 碰撞理论 铁塔 

分 类 号：TB532.1[理学—物理] TB553[理学—声学]