Abstract：The main reason forming multiple in Sanjiang basin is existence of a set of parallel inconformity layers (Muleng Formation) with strong reflectivity.Meanwhile, a great deal of high-velocity coal seam is developed. From many aspects such as time-space domain, Radon domain, frequency domain and autocorrelation, the paper analyzed in detail the geophysical feature of multiple, discovered regularity the multiple existed in the region and used forward and inverse transform in Radon and frequency domains as well as adaptive multiple muting for separation and study. It is shown that the effects of separation in Radon domain are better. On that basis, we developed a set of multiple-eliminated technique. Because the technique is Radon transform technique applied in frequency domain, which improves the focus property of multiple; combining filtering function with coherent technique, the aim of adaptive multiple-elimination is fulfilled, which has good stability.
