Calculation of Characteristics Factors of Debris Flow Under Different Frequency——Take Dazhaigou Valley as an Example

In metered research of debris flow,the debris flow discharge,current velocity,the debris flow scale are the most important characteristic factors in the debris flow.Calculating characteristics factors accurately is not only the key problem within the debris flow calculation,but also the important factor of research on debris flow's prevention and cure.Rain-storm and flood method is used,making use of one or two kinds of calculation method to calculate rain-storm and the flood characteristic factors,then making use of the rain-storm and the flood characteristic factors to reckon various characteristic factors of the debris flow.For example,to calculate the debris flow discharge with the rain-storm biggest discharge and the formulation methods,or make use of the flood total amount to reckon the debris flow scale.