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南峪沟地处特殊的构造部位,特定的地层经长期的内外营力共同作用,形成泥石流松散固体物源。物源类型有重力堆积物和沟床中下游段松散堆积物,其分布相对较集中,对泥石流补给方式表现为坡面冲刷、崩塌、滑坍和流体冲刷;沟域面积和沟道长度与物源量没有明显的对应关系,决定泥石流补给量的主要因素是沟谷形态和山体岩石类型。
South Yugou is located in a special tectonic part of a particular formation by the long-term internal and external force to work together to form a loose debris flow debris source. The types of sediments are gravity deposits and loose deposits in the middle and lower reaches of the ditch bed. The distribution of debris flow is relatively concentrated, and the recharge modes of debris flow are slope erosion, collapse, slump and fluid erosion. The area of ditch and the length of channel There is no obvious corresponding relationship between the source and the main factors that determine the recharge of debris flow are the valley shape and the rock type of the mountain.