Geological Hazard Risk Evaluation for Railway Network of Guizhou Province in China

摘要: In recent years, China’s high-speed railway has experienced a period of rapid development and being gradually rational. This paper took Guizhou Province as the study area, one places in China which are most seriously affected by landslide hazards. The research this was conducted three steps. Firstly, susceptibility mapping acquired applying competition network model, set conditioning factors were selected major landslide-conditioning factors, including elevation, lithology, rainfall, distance from river, tectonic line, karst density slope. Then, concept ‘degree fitting’ proposed assessment risk degree, it regarded elements determine protection grade on geological disasters. Finally, matter-element model established based extension method, can be used to evaluate grades for planned disasters integrating elements, train speed, mapping, fitting into model.