Factors Controlling the Formation of Collapse Disasters and Its Hazards to Power Transmission Projects in Erlang Mountain – Zheduo Mountain, China

This paper takes the collapse along the transmission corridor of The Deep -Cut Gorge Area of Dadu River in Erlangshan -Zheduo Mountain as the research object.The paper researches the characteristics of the development of the collapse disaster and the factors of the disaster.It is based on the remote sensing interpretation and the geological disaster investigation in the area.The results show that a total of 42 collapses were developed in the study area.The main controlling factors for the collapses in the area are topography, slope direction, geological structure, rock formation, annual rainfall, etc.The collapses were mainly developed in the area of rigid or relatively rigid rocks, and the rainfall was measured between 834-965 mm.There were 22 collapses in this area.The influence of the current collapse development along the transmission corridor in the Deep -Cut Gorge area of the Erlang Mountain -Zheduo Mountain Dadu River on the power transmission project is mainly to threaten the stability of the tower and its foundation.The research results provide a theoretical basis for the evaluation and prevention of geological disaster along the power transmission corridor.In addition, the results provide technical guidance for selecting lines, as well as for designing and constructing power transmission projects.