Remote sensing investigation and development distribution regularity of collapse and landslide geological hazard potentials along National Highway 219
LIU Wen1, WANG Meng1, WANG Peng2, LUO Feng2, HE Zhijie2, YU Tianbin1
1. Sichuan Institute of Comprehensive Geological Survey (Evaluation and Utilization of Strategic Rare Metals and Rare Earth Resource Key Laboratory of Sichuan Province), Sichuan Chengdu 610081,China; 2. China Railway First Survey and Design Institute Group Co. Ltd., Shanxi Xi'an 710043, China
Abstract：National Highway 219 starts from Yecheng County of Kashgar Area in Xinjiang in the north and ends at Lazi County of Shigatse City in Tibet in the south. The terrain conditions along National Highway 219 are complex, and the climate is harsh, with sparse population. The field survey is difficult to carry out and the remote sensing technology is one of the indispensable means for studying geohazard potentials in this area. The remote sensing interpretation signs of collapse-landslide geohazard potentials are established according to the hue, shape, texture and shadow characteristics of remote sensing images. A total of 126 collapse and landslide geohazard potentials were identified along National Highway 219, including 39 rock landslide potentials, 6 soil landslide potentials and 81 rock collapse potentials. Based on the characteristics of slope angle, rock (soil) type, geological structure and slope structure, the authors analyzed the influencing factors and spatial distribution of couapse and landslide geohazard potentials to divide four concentrated distribution areas, namely Saga concentrated distribution area (I), Suode-Tangre concentrated distribution area (II), Risong-Duoma concentrated distribution area (III) and West Kunlun concentrated distribution area (IV). The collapse-landslide geohazard potentials on the upper position of the slope have the characteristics of high-locality chain disasters, and these geohazard potentials have characteristics of strong concealment, long runout and strong destructiveness, and we should pay more attention to the study of such disasters. This research could provide some references for disaster prevention, mitigation and important engineering construction planning along National Highway 219.
刘文, 王猛, 王朋, 罗锋, 何志杰, 余天彬. 国道219沿线崩滑地质灾害隐患遥感调查及发育分布规律[J]. 中国地质调查, 2023, 10(5): 99-108.
LIU Wen, WANG Meng, WANG Peng, LUO Feng, HE Zhijie, YU Tianbin. Remote sensing investigation and development distribution regularity of collapse and landslide geological hazard potentials along National Highway 219. , 2023, 10(5): 99-108.
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2023, Vol. 10 
