SEISMIC WORK AT THE CHULMAKAN COAL DEPOSIT IN ORDER TO IDENTIFY AND TRACE LOW-POWER COAL SEAMS
A. S. Salnikov1, V. S. Seleznev2, P. V. Gromyko2, V.M. Soloviev3, Y. I. Kolesnikov1
1 Trofimuk Institute of Petroleum Geology and Geophysics of Siberian Branch Russian Academy of Sciences, Novosibirsk, Russia.
2 Seismological Branch of the Geophysical Survey of Russian Academy of Sciences
3 Altai‐Sayan Branch of the Geophysical Survey of Russian Academy of Sciences
Keywords: coal seams, discontinuous disturbances, seismic exploration, refracted and reflected waves
Abstract
Profitability, efficiency, and safety in the
coal mining industry depend on the mining and geological conditions. Quite
often, the geological forecast is not confirmed, especially in the presence of
small-amplitude tectonic disturbances and local geological inhomogeneities,
which is why the development and application of geophysical methods, including
various types of seismic exploration, is of great importance. The article
presents the results of ground-based seismic surveys at the Chulmakan coal
deposit in the Sakha Republic (Yakutia) to clarify the general geological
structure of the study area, identify thin coal layers, study their structure,
and detect tectonic faults. It has been shown that, due to fundamental physical
and technological limitations, the reflected wave method cannot be the only
source of reliable information when studying fine-structured objects. Based on
the joint interpretation of reflected and refracted waves, as well as the
analysis of well data, the authors have successfully traced and refined the
parameters of the thin coal layers, and identified several tectonic faults that
were not detected by drilling. It is also shown that the purposeful development
of methodology, technical means, and technologies for interpreting refracted
waves is not just an academic interest, but an urgent production necessity.
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