Study On Debris Flow's Hazard Degree Evaluation And Zoning Along The Tianshan Highway

Tianshan highway's debris flow is the main one of geological disasters in this area. On the basis of debris flow gully hazard valuation model, we set up first highway model of debris flow danger degree valuation. Which gives the scientific quantization for appraising the extent of injury of a debris flow to the highway in advance and provides quantization index for highway designs and protection at debris flow area? The model formula is: S=K1*K2; S is highway debris flow danger degree, K1 is debris flow hazard degree (0≤K1≤1), K2 is highway mangle degree (0≤K2≤1); K1 and K2 are reached with index quantization calculations respectively. This model has got very good verification through studying highway debris flow in China Xinjiang Tianshan .We have Succeed to make use of the gray connection method to carry on the debris flow gully a risk danger calculation of the typical model. As a result, the Analyzing result is more satisfied. Through investigating and analysising with the Tianshan highway's mainly factors which are the climate (including rainfall,snow and glacier melt water,temperature), vegetation, soil, geological formations, mountain sports Bethel, debris flow natural features, etc, we built up the methods about the risk zoning along the Tianshan highway which used Quantity Analyzed,. In this way, the whole area along Tianshan highway is divided into seven characteristic areas. We have completed to the risk evaluation of debris flows along Tianshan highway's regions for the first time, and builted up the information database. through risk analysis of the mathematics statistics,the chart is gives which is characteristics area risk grade of the seven areas, and the evaluation about the risk areas dividing is gives. At the same time, the project prevention and recommendation measure are gives, and it can be as a guide for the debris flow's Prevention.