输电线路高分辨率遥感影像地质灾害解译识别技术

Geological Hazard Idendification Technology Based on High Definition Remote Sensing Image in Power Transmission Line Installation

现代遥感技术在地质灾害调查、地质灾害危险评价、灾情评估和地质灾害治理方面可节约大量的人力和经济成本。以鹏深线和济腾线杆塔所在区域输电线路遥感影像为研究对象,在获取高清遥感影像基础上,开展遥感影像地质灾害调查和识别技术以及风险等级评估方法研究。研究表明:(1)工作区域内按地质灾害易发程度分为高易发区、中易发区、低易发区3类,鹏深甲乙线的146个杆塔中,62个杆塔处于高易发区,22个杆塔处于中易发区,66个杆塔处于低易发区,济腾甲乙线的92个杆塔中,62个杆塔处于高易发区,30个杆塔处于低易发区;(2)工作区域按风险等级分为高风险区、中风险区、低风险区3类,处于高风险区的滑坡15处、边坡9处,处于中风险区的滑坡4处、边坡0处,处于低风险区的滑坡2处。与现场踏勘结果进行对比,验证了分析结果的正确性和有效性。

The application of remote sensing in the investigation and evaluation of geological hazards can save significant labor and other costs.This paper presents the remote sensing results for the power transmission towers along Pengshen Line and Jiteng Line.The geological hazard identification,evaluation and rick analysis works are based on the high definition remote sensing images.The following conclusions can be made from the results:1)Three geological hazard zones can be divided within the power line alignments:high hazardous zone,medium hazardous zone and low hazardous zone.Of a total of 146 towers in Pengshen Line,62 towers are in the high hazardous zone,22 towers are in the medium hazardous zone and 66 towers are located in the low hazardous zone.Of a total of 92 towers in Jiteng Line,62 towers are within the high hazardous zone and 30 towers in the low hazardous zone.2)Three risk zones are identified in all work zones:high risk,medium risk and low risk.The remote sensing identified 20 high risk zones with landslide hazards and 9 slope stability locations;4 medium landslide zone and 2 low risk landslide zones are also identified.These results from the remote sensing are consistent with the actual ground reconnaissance.