可溶岩路基顶板稳定性研究

Study on the Stability of the Top Slab of the Soluble Rock Subgrade

文中以某公路路基顶板稳定性分析为例,在多种方法进行地质勘察的基础上,采用半定量评价分析法、结构近似分析法、三维数值模拟等对路基顶板抗弯、抗剪计算分析,综合评价路基顶板整体稳定性。结果表明,在工程实践中,采用多种方法对可溶岩溶洞顶板进行定性分析和定量计算,可进一步分析可溶岩的发育规律等,充分保证路基安全稳定。

Taking the stability analysis of a highway subgrade roof as an example,the overall stability of the subgrade roof is comprehensively evaluated by using semi quantitative evaluation analysis method,structural approximate analysis method,and three-dimensional numerical simulation method,etc.On the basis of a variety of comprehensive methods for geological survey,the bending and shear resistance calculation and analysis of the subgrade roof are performed.The results show that in engineering practice,a variety of reasonable methods can be used to conduct qualitative analysis and quantitative calculation on the roof of karst cave in karst rock,and further analyze the development law of karst rock,which ensures the safety and stability of subgrade.