Cavity effect on Rayleigh wave dispersion and P-wave refraction

作     者：Hossein Rahnema Sohrab Mirassi Giancarlo Dal Moro Hossein Rahnema;Sohrab Mirassi;Giancarlo Dal Moro

作者机构：Department of Civil and Environmental EngineeringShiraz University of TechnologyShirazIran Department of Civil EngineeringShahrekord BranchIslamic Azad UniversityShahrekordIran Institute of Rock Structure and MechanicsAcademy of Sciences of the Czech RepublicPragueCzech Republic 

出 版 物：《Earthquake Engineering and Engineering Vibration》 (地震工程与工程振动（英文刊）)

年 卷 期：2021年第20卷第1期

页      面：79-88页

核心收录：

学科分类：081801[工学-矿产普查与勘探] 081802[工学-地球探测与信息技术] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程] 0801[工学-力学（可授工学、理学学位）] 

主　　题：R-wave velocity spectrum P-wave refraction cavity intrusion backscattered waves finite element modeling(FEM) MASW method 

摘      要：Sinkholes and cavities can represent serious hazards to human safety and urban infrastructures,cause roadbed subsidence,and so *** is therefore essential to evaluate various sinkholes in different depths and sizes to assess the risk of *** paper evaluates the effect of different cavities on Rayleigh-wave propagation and body(P)wave ***(R)wave propagation is analyzed according to the classical multi-channel analysis of surface waves(MASW)method also considering the R-wave *** seismic traces are computed by means of finite element modeling(FEM)for cavity and intrusion at different depths and ***,field acquisition data is used to verify the detection effect of a cavity on R-and *** results show that the presence of backscattered R-waves and the changes in the R-wave velocity spectrum can help in cavity *** possible evidence is represented by significant changes in the refraction travel times over the cavity *** can be concluded that the field data are in good agreement with the synthetic,and it could be effective to consider the results of both R-and P-wave analysis in order to efficiently identify the cavities.