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岩溶塌陷对线性交通工程的安全运营影响很大,在已建高速公路区开展岩溶塌陷影响因素及致塌机理研究,对于高速公路防灾减灾具有重要的应用价值。本文以浙江省运营高速公路区覆盖型岩溶塌陷为研究对象,结合已有的某高速路段典型塌陷灾害勘察成果,深入研究了运营高速公路岩溶塌陷影响因素及灾变机理。认为对于运营高速公路区段的岩溶塌陷而言,特殊的覆盖型岩溶地质结构是灾害发生的基本地质条件,而外荷载和水动力条件的强烈变化则是运营高速公路岩溶塌陷的最主要影响因素。
Karst collapse has a great influence on the safety operation of linear traffic engineering. Studying on the factors affecting the collapse of the karst collapse and the mechanism of collapse in the expressway has the important application value for disaster prevention and mitigation of expressway. In this paper, the coverage of karst collapse in the expressway area of Zhejiang Province is taken as the research object. Based on the results of the typical collapse survey of a certain high-speed expressway, the influencing factors and disaster mechanism of karst collapse in expressway are studied. It is considered that the special cover karst geological structure is the basic geological condition for the karst collapse in the expressway section, and the strong change of the external load and hydrodynamic conditions is the main factor affecting the karst collapse of the expressway .