基于高分光学卫星影像的滑坡体变形导致输电铁塔倒塌演化研究

2020年6月17日,四川省丹巴县梅龙沟发生泥石流,复活了阿娘寨古滑坡体,此区域两基500 kV超高压输电铁塔在滑坡体持续变形的2个多月后倒塌.文章收集了12期国内外高分光学影像,提取两基铁塔在滑坡运动期间的塔基水平和垂直位移变化情况,并开展了铁塔受力情况评估及倒塔的过程分析.研究结果表明,高分卫星遥感数据可协助开展输...

Research on Evolution of Transmission Tower Collapse Caused by Deformation of Landslide Based on High-Resolution Optical Remote Satellite Image

On June 17,2020,a debris flow occurred in Meilong Gully,Danba County,Sichuan Province,which awaked the ancient landslide in Aniang village.Two 500 kV ultra-high voltage transmission towers on the ancient landslide collapsed via continuous deformation of the landslide after more than two months.This paper collects twelve multi-period data of domestic and foreign highresolution optical satellite remote sensing images in this area.The horizontal and vertical displacement changing results of the tower foundation during the landslide movement are extracted.Also,the process of tower collapse is analyzed to evaluate the force of the double tower.The research results evidently show that high-resolution satellite remote sensing data plays an irreplaceable role in the process of the accurate assessment about the disaster situation of transmission towers.It not only provides a significant reference for power grid rescue and disaster relief,but also can be used for artificial interpretation and risk assessment of ancient landslides in transmission line corridors areas.