Analysis of the Hydraulic Characteristics of the Debris Flow Disaster Chain in Baozhuping Gully and Analysis of the Conditions for Debris Flow Initiation
摘要
Taking the Baozhuping gully landslide-debris flow disaster chain in Ya’an City as an example, through field investigation and on-site measurement, this study analyzed the characteristics of the collapse and breakthrough during the “7.16” debris flow outbreak, and provided the types of dam break and its hydraulic characteristics after the landslide slide. The results show that the instability of the dam body of the pond is mainly due to the damage caused by the overflow of the top, and the maximum flow rate of the dam break reaches 30.12 m3/s, which triggers the initiation of debris flow downstream, providing reference for the prevention and control of similar debris flows.