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汶川“5·12”大地震引发了大量的次生地质灾害。这些次生地质灾害阻断交通,堵塞河流,对灾区人民的生命财产安全形成了严重威胁,并为灾区过渡性安置和灾后重建工作遗留重大的安全隐患。本文在分析四川省地震灾区松潘县东龙沟泥石流基本特征的基础上,通过对形成泥石流的地形、水源、物源三个基本条件进行了深入论述,计算了泥石流的重度、流速、流量、冲出量等动力学参数,并分析了泥石流的发展趋势,最后根据泥石流危险性和被保护对象的重要性,提出了相应的综合治理措施。
Wenchuan “5.12 ” earthquake triggered a large number of secondary geological disasters. These secondary geological disasters block traffic and block rivers, posing a serious threat to the lives and property of the people in the disaster-stricken areas and left a major security risk for the transitional resettlement and post-disaster reconstruction of the disaster areas. Based on the analysis of the basic characteristics of debris flow in Donglong Gully, Songpan County, Sichuan Province, this paper discusses the three basic conditions of topography, water source and provenance of debris flow, and calculates the debris flow velocity, flow rate, According to the danger of debris flows and the importance of the protected objects, the corresponding comprehensive control measures are put forward.