Study On Early Warning Model Of Debris Flow In Yunnan Gongshan In Nu River

In our country, the debris flow disaster is more serious, and the monitoring and warning system of debris flow is a hot research in recent years. Debris flows in the Nujiang River Basin is a typical, up to 19 of debris flow, this paper to Nu Gongshan County as an example, combined with monitoring data and field investigation, based on the AHP to select 5D cumulative rainfall, rainfall in 24 h, a rainfall maximum rainfall, along the hillside slope, vegetation coverage rate, gradient and drainage area as early warning indicators, the establishment of the early warning model of meteorological and geological environment coupled, this paper on the basis of previous studies, combined with the historical disaster information and rainfall mud coupling relationship, in the dual condition model is verified by the authority and reliability. Through analysis and verification, the model can better reflect the disaster situation of the study area, so as to provide a theoretical basis for the study of debris flow disaster early warning.