Modeling research on characteristics and extraction method of abnormal seismic waves on small scale karst collapse column

In the common situation,the seismic response of small scale karst collapse column(KCC) is not obvious.This paper utilizes the SVD method to process 3D modeling data.The reflection wave of coal layer has been filtered,the diffracted wave scattered from the break point is enhanced,and the interpretation of samll KCC is improved.This application has obtained favorale result in the actual work.