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本文针对几条铁路岩溶塌陷成因机理的分析 ,建立了导水盖层的渗流场与应力场耦合、阻水盖层的强度弱化—压差场—失托增荷效应、薄顶板溶洞岩体力学和路堑填土路基 4个宏观上的概念模型。并用实例进行了分析 ,为铁路岩溶塌陷机理分析和数学模型的建立提供了比较系统的概念体系。
Based on the analysis of the genetic mechanism of several karst collapses in railway, the seepage field and stress field of water cap are established, and the strength of water cap is weakened - the differential pressure field - And four conceptual models of roadbed filling roadbed. The analysis is carried out with examples, which provides a systematic conceptual system for the analysis of karst collapse mechanism and the establishment of mathematical models.