Abstract：Through the field survey of Muzuogou debris flow in Taihang Mountain area, the paper summarizes its formation conditions and development characteristics. On this basis, the empirical formula method is used to calculate the parameters of movement characteristics of Muzuogou debris flow, including the flow velocity, peak flow and overall impact force of debris flow at typical sections of the four main branch gullies, to further analyze the development trend and calculate the maximum dangerous range of debris flow. There are topographic, hydrometeorological and provenance conditions conducive to the formation of debris flow in Muzuogou. The susceptibility of debris flow is high, with the mature development stage, gradually transiting to decline stage. From the above, it is inferred that Muzuogou has the condition for another debris flow, which still seriously threaten the local residents. It is suggested that check dams be set up in debris flow formation area and drainage channels built in circulation area.
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2021, Vol. 30 
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