Characteristics and prevention of debris flow in Tianba Gully of Wangmo County in Guizhou

Tianba Gully is debris flow of low frequency,And it broke out under the condition of heavy rain on June 6.This paper analyzes the sources,topography and rainfall condition,gets the flow velocity and flow parameters through the field sampling and section interception,forecasts the activities trends of Tianba Gully in the future and puts forward the related prevention and control of suggestions.