Abstract:

The reconnaissance and the general survey results, such as drilling, geophysical prospecting and chemical testing results, as well as methods of key beds, interlayer spacing, coal quality analysis and log response, have been applied to establish and compare the coal-bearing strata in Dangzhonggang Exploration District, Anhe Coalfield, determine key recoverable coal seams and analyze stratigraphic sequences, lithologic combination, key bed thickness and interlayer spacing. The existing research results have been studied and the experience has been compared, the 12 layers of coal containing coal measure strata is determined, and the thickness of Group or Member. To determine the horizon of Key workable coal seams B1 and A 1 1. The apparent resistivity of coal seams B1 is 372 ~ 1350 Ω?m , coal seams B1 is low-ash and low-sulfur coal. The apparent resistivity of coal seams A 1 1 is 320 ~ 860 Ω?m , coal seams A 1 1 is Ash Coal and High Sulfur Coal. A case study of coal and rock seams correlation in this area, discusses the importance of coal and rock contrasting suitability of different methods, combined with comparative data to explain the area coal sedimentary origin, composition differences, differences in the physical properties inherent mechanism.

Key words: Anhe Coalfield, Dangzhonggang Exploration District, Carboniferous, Permian, comparison of coal seams and rock strata, key bed, seam B1, seam A11