无人机航测系统在滑坡应急中的应用

2017年2月19日3：45左右，甘肃省永靖县黑方台罗家坡发生滑坡。针对滑坡灾害应急过程中对滑坡滑体厚度和体积精确计算的难题，本文采用无人机航测系统，获取滑坡前后的高精度DEM数据源，并结合现场调查，精确计算出滑坡堆积区厚度的分布情况。研究结果表明，罗家坡2^#滑坡长525m，总面积约5.65×10⁴m²，滑坡体总体积约14.7×10⁴m³，最大滑距为368m，滑坡剪出口位于第四系上更新统冲积粉质黏土顶部，堆积区最大埋深8.35m，位于滑坡滑舌的西南侧。根据DOM影像和现场调查，该滑坡危害对象以农田和水渠为主，无房屋受损和人员伤亡，本文通过引入无人机航测系统为滑坡应急抢险救灾提供了一种新的研究方向。

Application of UAV Aerial Photograph System in Emergency Rescue and Relief for Landslide

At about 3:45 am on February 19,2017,a landslide occurred at Luojiapo in Heifangtai Yongjing County,Gansu Province.In order to solve the problem of landslide thickness and volume calculation in the process of landslide disaster,this paper adopts the Sirius PRO UAV,the high resolution DEM data source before and after the landslide is obtained,and then the distribution of the thickness of the landslide accumulation area is calculated accurately combined with the field investigation.The results show that the length of the Luojiapo 2#landslide is 525 m,the total landslide area is about 5.65×104 m2,the total volume of landslide is about 14.7×104 m3,the maximum slide distance is 368 m,and the landslide shear outlet is located in the top surface of the silty clay of Upper Pleistocene Quaternary.The maximum buried depth of deposition zone is 8.35 m,located in the southwest side of the landslide tongue.According to the DOM image and the field investigation,the farmland and canal is the landslide hazard object,and there is no housing damage and casualties.This paper introduces a new research direction for the landslide emergency rescue and rescue by UAV.