Theoretical Study of Seismic Tomography and Its Application in the Karst Development Area
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Abstract:
Based on the wave ray propagation theory in the homogeneous medium, a velocity model was developed for the forward calculation of ray using the straight ray tracking method. The model was simulated inversely using the SIRT and LSQR algorithms. The results showed that LSQR algorithm can achieve a better balance in the accuracy, efficiency, and stability. The seismic tomography method was applied to the adit exploration on the right bank of a hydropower station in the karst development area. This method can determine the velocity distribution of the rock mass and the spatial distribution of K25 cave in the area. Compared with the results obtained from other methods, it suggested that the seismic tomography method has the advantages of high resolution, intuitive image, and easy to explain when used for the karst development area.
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