Application of Automatic Picking of First Arrival Time of Fuzzy Nesting Multilevel Median Filter Based on Combined Energy Ratio Method in 3-D Seismic Processing in Mingye Coal Mine
SUN Zhe
JIANG Weina
Abstract：3-D seismic explored blocks of Mingye Coal Mine were divided into exposed bedrock block and loess covering block, the surface elevation difference and the transverse speed change near the surface caused the distortion of the hyperbolic shape, the low relevant degree of first arrival time near the road and the poor excitation and receiving conditions, the random noise affected the automatic first arrrival picking accuracy. In this paper, the fuzzy nesting multlevel median filter method was adopted to suppress the random noise and effectively protect the first arrival wave signals, and under the premise of the first arrival wave signal with high signal noise ratio ( SNR) , sliding time window energy ratio method was used for the batch picking of the first arrival time. The results showed that this method was suitable for the frist arrival automatic picking of the seismic data of single-shot first arrival hyperbolic in low relevant degree and with low SNR, and this method has been successfully applied in 3-D seismic processing in Mingye Mine.
Keywords：automatic pickingmedian filterenergy ratio3-D seismiccoal mine
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 61-63,67 )