Building and application of the debris flow warning system based on multi-information

A multidisciplinary approach is adopted in order to build the warning system of rainfall-triggered debris flows. The prediction is always the emphasis of research on debris flows. But because of the complex relationship between rainfall and debris flows there is not any universal method to do research on it. An approach based on logistic regression and antecedent effective rainfall is promoted. A warning system has been built combining with hazard zonation. And a computer system has been developed based on the platform of software MAPGIS. Depending on the integrated analysis of rainfall and geologic environmental factors, an automated partition method is promoted. Then the quantified automated prediction of rainfall-triggered debris flows is achieved. The system has been applied in Anshan, Liaoning Province.