地质力学学报2025，Vol.31Issue(1)：91-108,18.DOI:10.12090/j.issn.1006-6616.2024034
藏东南输电走廊北线区域地质环境与主要地质安全问题
Geological environment and main geological safety challenges in the northern segment of the southeast Xizang(Tibet)power transmission corridor
摘要
Abstract
[Objective]Southeast Xizang(Tibet)boasts a wealth of hydroelectric resources,attributed to its distinctive topography,geomorphology,and climatic conditions.This study aims to safeguard the geological route selection,construction,and operation of the northern segment of the southeast Xizang(Tibet)power transmission corridor.[Methods]We conduct a comprehensive review of literature from both domestic and international sources,and elaborate extensively the regional geological conditions and significant geological safety challenges encountered along the corridor.Furthermore,this study presents sound recommendations for the further disaster identification and monitoring of the southeast Xizang(Tibet)power transmission corridor.[Results]The results are:(1)The transmission corridor in southeast Xizang(Tibet)exhibits pronounced structural activity,well-developed active faults,frequent strong seismic events,notable variations in topography and geomorphology,and distinctive regional geological conditions characterized by structural degradation of rock and soil;all of which have the potential to cause geological safety challenges.(2)The primary geological safety challenges in the northern section of the southeast Xizang(Tibet)power transmission corridor include landslides,collapses,debris flows,snow(ice)avalanches,glacial lake outburst floods,and frost heave settlements.(3)The development of geological safety issues along the route is controlled by extremely steep topography,complex geomorphological conditions,warming and snowmelt due to climate change,intense fault activity,frequent earthquakes,as well as the coupling of internal and external dynamics that induce high-altitude and long-distance disaster chains.[Conclusion]By deeply integrating the advantages of soft measures including InSAR technology,optical remote sensing,UAV photogrammetry,airborne LiDAR technology,and online field monitoring the issues of misinterpretation,oversight,and imprecision in hazard assessment for the southeast Xizang(Tibet)power transmission corridor can be effectively overcome.[Significance]The research establishes a theoretical foundation for the prevention and control of geological safety risks in the planning and implementation of hydroelectric projects in southeast Xizang(Tibet),holding substantial practical value for the sustainable development of the region.关键词
输电走廊/藏东南地区/地质安全问题/地质灾害/工程地质/遥感技术Key words
power transmission corridor/southeast Xizang(Tibet)/geological safety issues/geological hazards/engineering geology/remote sensing technology分类
地质学引用本文复制引用
田旭文,王彦兵,朱姝,姚鑫,李显鑫..藏东南输电走廊北线区域地质环境与主要地质安全问题[J].地质力学学报,2025,31(1):91-108,18.基金项目
国家电网有限公司总部管理科技项目(5200-202356393A-2-4-KJ) This research is financially supported by the Science and Technology Project of State Grid Corporation of China(Grant No.5200-202356393A-2-4-KJ). （5200-202356393A-2-4-KJ）
