Application And Research Of Tube Wave Detection In Weathered Strata

The weathered rock formation is a special kind of soil with the widest distribution range and great harm.Geological disasters such as landslides caused by severe weathering of underground rock formations.Therefore,the application of reasonable and accurate exploration methods to determine the specific conditions of weathered rock strata,can provide relevant guidance for the construction of weathered rock strata.This paper introduces the engineering geological characteristics of weathered rock layers,and describes the classification,composition and impact on weathering rock layers.The basic principles of some common geophysical methods,as well as their respective advantages and applications,are analyzed.The paper introduces the basic principles of tube wave detection methods.Using the shear wave velocity,the geotechnical tube wave velocity with different weathering degrees under different pore liquid conditions was calculated,and the criteria for different weathering degrees by tube wave velocity were determined.The calculation formula of tube wave velocity is deduced,and the tube wave velocity of rock layer with different weathering degree is calculated.Through the analysis and research on tube wave PSD curve and energy curve,tube wave map and tube wave velocity,The characteristics of the rock wave in different layers of weathering.Through the application of engineering examples,the tube wave velocity of different weathering layers is calculated.The PSD curve,energy curve and tube wave mapping characteristics of the tube wave detection at the site are analyzed.The weathered layer of the site is effectively divided and the foundation height of the pile foundation is determined..According to the exposure of the hole and the shear wave test results,the validity and accuracy of the tube wave detection are verified..