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林火次生灾害的发生对环境质量和人类的健康与安全具有重要影响.火后泥石流是最危险的林火次生灾害之一,了解其发生条件、掌握其发生状况,是火后灾害风险评估的重要基础.本文从植被、降雨阈值、物源3方面阐述了火对泥石流的影响,分析了火后泥石流起动的地形地质、降雨、坡面条件以及浅层滑坡与地表径流引发火后泥石流的起动机制,并综述了火后泥石流预测预报与治理措施的研究进展.最后提出了在未来的研究中应该着重关注4个方面:量化火行为及环境因子与火后泥石流的关系;火后泥石流起动、运动过程的定量分析;火后泥石流机理模型研究;火后泥石流快速高效治理措施研究.
The occurrence of forest fire secondary disaster has an important influence on the environmental quality and human health and safety.Floor debris flow is one of the most dangerous forest fire secondary hazards after fire and its occurrence conditions and its occurrence are the risk of post-fire disaster This paper describes the impact of fire on debris flow from the perspectives of vegetation, rainfall threshold and provenance, and analyzes the topography and geology, rainfall, slope conditions and the post-fire debris flow triggered by shallow landslides and surface runoff And summarizes the research progress of prediction and control measures for debris flow after fire.Finally, four aspects should be emphasized in the future research: quantitative fire behavior and the relationship between environmental factors and post-fire debris flow; post-fire debris flow Start-up, the quantitative analysis of the movement process; debris flow after fire mechanism model; rapid and efficient control measures of debris flow after fire.