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以安县晓坝镇旁边的茶坪河一级阶地为研究场地,利用瑞利波勘探技术结合原位钻探技术,对该场地土层进行了大致划分。基于瑞利波法测得的大量剪切波波速数据、静力触探和标准贯入试验计算的地基承载力数据,分别建立了粉质粘土和砂土的上述两物理量之间的定量关系式。统计和回归分析表明,剪切波速度和地基承载力之间存在线性关系。该试验研究结果有助于快捷、经济地确定河流冲积土的地基承载力,进一步扩展了瑞利波法在岩土工程勘探中的应用。
Taking the first terrace of Chaping River next to Xiaoba Town in Anxian County as the research site, the Rayleigh wave exploration technology and the in situ drilling technology are used to roughly classify the soil layer of the site. The quantitative relationship between the above two physical quantities of silty clay and sand was established based on a large number of shear wave velocity data measured by Rayleigh wave method and the data of foundation bearing capacity calculated by static penetration test and standard penetration test . Statistical and regression analysis shows that there is a linear relationship between shear wave velocity and foundation bearing capacity. The results of this experiment will help to quickly and economically determine the foundation bearing capacity of river alluvial soil and further extend the application of Rayleigh wave method in geotechnical engineering exploration.