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泸定县五里村泥石流沟属于典型的高山峡谷地形,构造侵蚀地貌,地形地貌高差悬殊,地质构造复杂,岩石破碎,地质灾害频发,具备泥石流发生的条件。对五里村泥石流灾害的危害特征进行了分析,表现为五里村沟下游堆积区,泥石流流向明显,直冲工棚与居民点的低凹处,更由于过流量小的便桥阻塞,将加大泥石流能量向低凹处转移,一旦暴发泥石流,易造成重大经济损失和人员伤亡。针对泥石流的危害特征,建议扩大便桥过流量,低凹处工棚与居民点搬迁至右岸相对较高处,以避免泥石流灾害。
The debris flow gully in Wuli Village of Luding County belongs to the typical alpine valley topography. It has erosional topography and topographical features. The geological structure is complicated, the rock is broken, and the geological disasters are frequent with the conditions of debris flow occurring. The hazard characteristics of debris flow disaster in Wuli Village were analyzed. The results showed that the debris flow in the downstream of Wuli Cunqu was obvious. The flow of mudslides was obvious. The depression of the sheds and settlements was directly impacted. More debris flow bridges To the depression of the transfer, once the outbreak of debris flow, could easily lead to major economic losses and casualties. According to the hazard characteristics of debris flow, it is proposed to increase the overpass flow of the overpasses, and to relocate the sheds and settlements to relatively high places on the right bank to avoid debris flow disasters.