RELATIONSHIP BETWEEN SEDIMENTARY ENVIRONMENTS AND THE INFLUENCE OF COAL ROOF STABILITY ON MINE PLANNING

The sedimentary environments of No. 9 coal roof in the Taiyuan Formation have been reconstructed in this paper with the aid of core records, columnar borehole sections, logging curves, chemistry and grain size analysis of the rocks and minerals from 47 boreholes in the study area. The sedimentary facies on the roof include flood lake deposits, distributary channel deposits, natural levee deposits, crevasse-splay deposits. Combined the environmental analysis of the coal-bearing series with mine safety and production, this paper has opened vast vistas for the research and utilization of the sedimentary environments.