瞬态面波法在公路软基勘查中的应用研究

对公路建设中时常遇见的砂土类软弱路基问题,采用瞬态面波法并结合少量钻孔测试信息,建立面波速度和砂土力学参数的关系模型,可预测勘查区的砂土力学参数的纵横向展布特征和规律。经实践检验,预测结果与实际砂土介质的变化规律基本吻合,表明所建立的关系数学模型基本正确并具有较高的实用性。结果为公路砂土路基分类评价以及软弱路基的勘查提供了一个经济可行的思路和方法。

Application Study on Transient Surface Wave Method in Soft Foundation Exploration of Highway

The weak roadbed in sand soil area is a common problem in the highway construction.Adopting transient surface wave method combining with the test information of some drill holes,the relation model of the interface wave velocity and sandy soil mechanics parameters is built up in thip paper,and the vertical and horizontal distribution characteristic and regulation of the sandy soil mechanics parameters can be predicted in prospecting area.Through the practice checking,the predict result mainly coincides with the variety regulation of the actual sandy soil medium,which indicates that the mathematiced relation model built up in the paper is correct and has higher practicability.The method will provide an economic viable way for prospecting and the classification evaluation of sandy soil in highway roadbed.