The Relationship Between Response Of Seismic And Earthquaketo Slope By Using Ultrasonic Wave

This paper aims to analyze the dynamic response of three typical flat and concave homogeneous slope of shear wave under different incident angle.First of all,the physical model of slope was established,the test of physical simulation experiment of typical homogeneous slope was using ultrasonic physical simulation method,and then established the same size numerical model and prototype model after amplification by the similarity for the slope by using FLAC^3D numerical software.After the model was established,excitation was tested on the three typical homogeneous slope under different vibration directions,different intensities of vertically incident shear wave,respectively.The slope dynamic response?velocity,dynamic stress and plastic zone distribution?was obtained,and the results were analyzed and described as follows:?1?The simple shape of homogeneous slope was compared by physical simulation and numerical simulation,the size of model,parameters and the excitation conditions of physical simulation and numerical simulation were set to the same,the original wave shape was input for excitation,then the gained energy map of physical simulation was compared with the vibration map of numerical simulation,which reflected the consistency of the strength of the law of energy distribution of physical simulation and numerical simulation,which confirmed the practicability and accuracy of ultrasonic wave physical simulation.?2?The physical model was magnified as the similarity ratio,the original wave form was magnified as the physical model too.The original wave form was input into prototype slope after amplification,at the same time,the excitation intensity was increased,by looking for critical acceleration,the process and changes of the slope dynamic response from microseismic to earthquakes were obtained.The relationship of the waves field between microseismic and earthquakes were clear.Not only the energy distribution from earthquakes to microseismic was reflected,but also the rationality analysis through microseismic to earthquakes was fully demonstrated.?3?The essential relationship between the characteristics of microseismic and earthquakes and slope was testified.The significance of microseismic wave field to stability of slope was clear.The results of this study can confirm the value of the research of ultrasonic seismic simulation method to seismic dynamic response of slope.