砂性土路基病害的地质内因与水文外因分析  

Analysis on the Inside Geological and External Hydrological Causes of Sand-soil Subgrade Disease

作　　者：齐建模 汤罗圣[2] 肖斌 乔松林 宋挺 

机构地区：[1]武黄高速公路管理处,武汉430205 [2]湖北省交通规划设计院,武汉430051

出　　处：《建材世界》2014年第3期43-45,共3页The World of Building Materials

摘　　要：在分析杭瑞高速砂性土路基段工程地质条件的基础上,采用现场调查方式对该砂性土路基段病害发育位置、规模、类型等进行分析及总结,最后运用室内试验及理论分析等手段,对该砂性土路基段病害成因进行深入分析。分析结果表明强风化花岗残积土填料是该砂性土路基病害的地质内因,地表水流直接冲刷、地表水下渗内部掏空及坡脚水流侵蚀是该砂性土路基病害的水文外因。The disease development position,size and type of the sand-soil subgrade section were analyzed and sum-marized by field investigation.On the basis of the analysis on engineering geological conditions of sand-soil subgrade section in Hangrui Highway,the disease causes of this sand-soil subgrade section were analyzed by means of indoor test and theoretical analysis.Analysis result shows that for the sand-soil subgrade disease,the strongly weathered granite residual soil packing is the internal geological causes,and surface water erosion directly,surface water infiltra-tion empty inside and slope toe water erosion are the external hydrological causes.

关 键 词：砂性土路基 病害成因 地质内因 水文外因 

分 类 号：U418.6[交通运输工程—道路与铁道工程]