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泥石流属于典型的灾害地质现象及地貌过程,是公路建设及养护过程中普遍存在且破坏作用极其强烈的公路水毁类型,是毁损穿越泥石流沟的公路路基、路面及相应防治结构物的重要外在动力机制.本文通过对泥石流的介绍,阐述了泥石流发生后的勘测调查方法,提出了防护原则及措施,并就防治措施的要点加以简要说明.“,”debris flow is a typical geological hazards and geomorphological processes, it is highway construction and maintenance process universal existence and the destructive effect of extremely strong highway flood type, is damaged through the debris flow gully highway subgrade, pavement and the corresponding controlling structure important external dynamic mechanism. This article through to the introduction of debris flow, elaborated the debris flow occurred after the survey method, puts forward the protection principles and measures, and the preventive measures of the points are briefly introduced.