高速公路软基病害处理质量检测技术

在埋藏浅、厚度薄的软基病害路段修建高等级公路,往往采用换土垫层法进行处理,但处理过程中清淤厚度和换填层的厚度直接关系到路基沉降、路堤稳定,一直引起各方关注。以湖南省某高速公路66处软基病害路段处理效果检测为例,详细探讨了清淤厚度的地球物理无损检测技术。工程实践表明,采用地球物理无损检测技术,与传统钻探取芯方法相比较,可以快速、准确地查清清淤及换填层的厚度,为施工单位及业主的决策,及时提供相关数据资料和科学依据。

Detection Technique of Distress Treatment Quality of Soft Foundation for Expressway

In section of soft foundation with embedding fleet,and thickness thin for expressway,soil replacement and padding methods are always adopted.But during processing,thickness of cleaning up silt and displacement relates to sedimentation of roadbed and stabilization of road,which are paid more attention.In case of detection of treatment results of 66-positions soft foundation for expressway in Hunan Province,the geophysical non-destructive detection technique for thickness of cleaning up silt are discussed particularly.Practice shows that,compared with the traditional drilling for core,the geophysical non-destructive detection technique can find out thickness of soil replacement and padding quickly and exactly,which can bring about actual data and proof scientifically for decision-making to construction.