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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。
The construction of high-grade highways in shallow and thin-thickness soft-base disease sections is often treated by soil replacement cushion method. However, the dredging thickness and the thickness of the replacement layer are directly related to the subgrade settlement and the stability of the embankment during the treatment. All parties concerned. Taking the treatment of soft ground disease in 66 highway in Hunan Province as an example, the geophysical nondestructive testing technology of dredging thickness was discussed in detail. Engineering practice shows that using geophysical non-destructive testing technology compared with the traditional drilling coring method can quickly and accurately find out the thickness of dredging and replacement layers for the construction unit and the owner’s decision-making, timely provision of relevant data and data Scientific basis.