Rockfall hazard identification and assessment of the Langxian- Milin section of the transmission line passage of Central Tibet Grid Interconnection Project

2018 International Conference on Civil and Hydraulic Engineering

土木建筑工程;水利工程

Wang, Ruiqi^1,2 ; Wang, Xueliang^1 ; Liu, Haiyang^1,2 ; Wang, Yanbing^3 ; Peng, Yuhui^4 ; Sun, Wencheng^4 ; Liu, Jianqiao^5

Institute of Geology and Geophysics, Chinese Academy of Sciences, China^1

University of Chinese Academy of Sciences, China^2

State Grid Economic and Technological Research Institute CO., LTD., China^3

State Grid Corporation of China, Northwest China Branch, China^4

Beijing North-Star Digital Remote Sensing Technology Co., LTD., China^5

关键词: Grid interconnections;    Hazard prevention;    Hydrogeological conditions;    On site investigations;    Remote sensing technology;    Slope structure;    Space distribution;    Transmission tower;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/189/5/052046/pdf
DOI  :  10.1088/1755-1315/189/5/052046

学科分类：土木及结构工程学

来源: IOP

【 摘 要 】

In order to select the location of transmission towers in Central Tibet Grid Interconnection Project and provide hazard prevention strategies for the safe operation of power transmission lines, we used remote sensing technology to carry out the rockfall interpretation, according to which the space distribution for the rockfall hazard was identified. Then, on-site investigation and UAV aerial survey were conducted in the typical section. Using the scoring method, we selected eight factors including topography, lithology, rock structure, slope structure, hydrogeological conditions, vegetation development, historical rockfall, and slope stability status. The results of the study showed that 116 rockfalls were identified in the transmission line passage of Central Tibet Grid Interconnection Project. Since the rockfall linear density of the Langxian-Milin section was greater than that of other sections, this section was selected as a typical survey section, and assessments were conducted in this section. The study area was classified as high serious, serious, medium serious, and low serious four levels.