High Resolution Seismic Reflection Survey for Coal Mine: fault detection

Thursday, 18 December 2014
Ulambayasakh Khukhuudei1,2 and Munkhnasan Khukhuudei1, (1)Mongolian University of Science and Technology, ulaanbaatar, Mongolia, (2)"Proseis" llc, ulaanbaatar, Mongolia
High Resolution Seismic Reflection (HRSR) methods will become a more important tool to help unravel structures hosting mineral deposits at great depth for mine planning and exploration. Modern coal mining requires certainly about geological faults and structural features.

This paper focuses on 2D Seismic section mapping results from an “Zeegt” lignite coal mine in the “Mongol Altai” coal basin, which required the establishment of major structure for faults and basement. HRSR method was able to detect subsurface faults associated with the major fault system. We have used numerical modeling in an ideal, noise free environment with homogenous layering to detect of faults. In a coal mining setting where the seismic velocity of the high ranges from 3000m/s to 3600m/s and the dominant seismic frequency is 100Hz, available to locate faults with a throw of 4-5m. Faults with displacements as seam thickness detected down to several hundred meter beneath the surface.