The Township-level Roads To Snow Disaster Risk Discussion Of Guoluo State

The snow disaster is the major natural disaster in northern Qinghai plateau which has a significant impact on livestock production. Guoluo state, due to the remote location, complex geographical environment and economic development lags behind,the roads construction are relatively backward, so when the snow comes often affected more serious. In this paper, by using Guoluo Prefecture of Qinghai province highway network, the data of development of society and economy and the meteorology files, ArcGIS software, and the combination of analytic hierarchy process(AHP) method and clustering analysis, the author makes the evaluation of the failure of road traffic caused by snow disaster in 40 townships Guoluo region. By combining the snow disaster risk index and vulnerability index to calculate Guoluo Prefecture snow highway disaster risk index, the author provides scientific reference and basis for the rescue and eliminating road traffic after snow disaster in Guoluo area in order to be of any help for disaster prevention and disaster relief work. The results show that there are 42.5% of towns in Guoluo Prefecture of 40 towns with light risk;there are 32.5% of towns with moderate risk; there are 10% of towns with severe heavy risk; there are 15% of towns with heavy risk. Therefore, the author concludes that most of 40 the towns in the research are in light, moderate risk. Partial area risk is heavy. Through the conclusion, in view of the roads put forward disaster prevention and relief suggestions specially.Since most of previous research from large scale field study of the snow disaster, starting from the township-level and for roads are very little, So this research on disaster prevention and disaster relief work has a strong practical value and operability.