Study On Formation Condition And Prevention Countermeasure Of Debris Flow In Jinzigou County Of Ninglang County

Debris flow is a typical geological disasters, which caused great harm to Ninglang Yi Autonomous County, Lijiang City, steep terrain, complex lithology, earthquakes, more precipitation is debris flow disaster-prone areas. In this paper, Ninglang gold DEBRIS FLOW for the study of the formation of gold DEBRIS FLOW area, circulation areas and accumulation zone characteristics were analyzed on the basis of the formation of gold DEBRIS FLOW condition analysis, the risk of gold were DEBRIS FLOW qualitative analysis and forecasting, and uses fuzzy comprehensive evaluation method for gold debris flow risk of a quantitative prediction and evaluation. And based on the gold DEBRIS FLOW proposed control measures. The main work is as follows:(1) In DEBRIS FLOW gold background research on the geological environment, based on the formation of gold DEBRIS FLOW conditions (including provenance conditions, terrain conditions, hydrological conditions) were analyzed and discussed in detail.(2) for the gold debris flow risk of qualitative analysis and evaluation, according to15factors influencing gold DEBRIS FLOW be prone to quantify the degree of evaluation.(3) Based on the developmental characteristics of gold ditch debris flow hazards analysis, the choice of the seven evaluation factors for gold debris flow risk fuzzy comprehensive evaluation, and solving weights and membership was introduced gray correlation method and the semi-trapezoidal distribution model, using gray correlation quantitatively determine the weighting factor affecting the heavy debris flow, and distribution of semi-trapezoidal membership functions of the model design principles and quantitative evaluation factors obtained membership of the evaluation set, so that the improved fuzzy comprehensive evaluation method is fully quantitative technology, to overcome the past evaluation model of human subjectivity in the evaluation and improve credibility.(4) on the basis of a very high degree of risk and the analysis of its formation conditions DEBRIS FLOW gold on gold DEBRIS FLOW for control measures were designed, proposed a " Elam mainly to prevent supplement" governance ideas and engineering measures designed to increase preventive measures biological engineering.