基于扁铲侧胀试验材料指数的岩土类别研究

Soil Classification Based on Material Index from the Flat Dilatometer Test

阐述了岩土工程勘察中岩土类别的划分情况,由于岩土体的复杂性和天然成因,其物理力学性质具有差异性和区域性,采用扁铲侧胀试验对其进行岩土类别的划分,需要建立区域性岩土参数的岩土材料分类公式。通过室内试验数据和扁铲侧胀试验,据现行国家规范提出的材料指数公式,总结了武汉地区岩土类别的划分规律和相关关系,以促进扁铲侧胀技术的推广应用。

This paper introduces the geotechnical material classifications from the engineering explorations.Because of the complexity and variety origination of different soils,their physical and mechanical properties are usually different and demonstrate strong locality.The classification of the geotechnical material by the flat dilatometer test(DMT)requires the establishment of a classification system for geotechnical parameters.Based on laboratory test data and DMT results and the formula of material index proposed by the current national code,this paper summarizes the classification method and the correlation of rock and soil types in Wuhan area.