Geological hazard risk assessment of line landslide based on remotely sensed data and GIS

Abstract With the development of economy, a large number of human development activities in the natural environment have directly or indirectly increased the possibility of geological disasters. Every year a large number of geological disasters pose a serious threat to the safety of human life and property, and the effective management of geological disasters has become one of the major difficulties facing our country. This paper mainly studies the risk assessment of geological hazards of the line landslide based on remote sensing and GIS. Based on detailed survey items of geological disasters in a certain area, this thesis analyzes the distribution and development characteristics of landslide geological disasters in the study area based on the obtained geological data and takes landslides as research objects. And evaluation. Disaster assessment is an important part of disaster prevention and mitigation, and provides important references for local infrastructure construction, tourism development, urban planning and regional economic development. It can be known from the experiments in this paper that the evaluation results based on the hierarchical entropy variable weight method are more accurate, and the accuracy rate is 67%. The hierarchical entropy variable weight method can not only synthesize the rich experience of experts, but also reduce the subjective impact by introducing an entropy algorithm, thereby obtaining more accurate evaluation results.