How to divide the water level and danger zone of mountain floods along the river in the hilly area

Abstract

Abstract With the precision of mountain flood disaster prevention work in the hilly area, the local key areas (villages and towns) in the hilly areas have become the focus of disaster prevention. This paper introduces analytical process of the flood control capacity of village along river, gives the calculating method of water level-river discharge relationship in control section, puts forward a feasible method of calculating the disaster water level and counting number of people in danger zone by point projection and judging point-line relationship. And this method is calculated by taking typical village along river for instance. The results show that this method can ascertain the household that is the weakest in the aspect of flood control capacity by combining field investigation and determine the relationship between households and different frequencies of flood water line, thus the flood control capacity of village along the river can be calculated accurately.