The Research Of Development Regularities Of Geological Stucture In Weibei Coalfield

With the speeding up of the coal resources mining speed, Weibei P-C coalfield facingresource depletion and deterioration of mining geological conditions; To achieve efficientproduction, it is necessary to further study of tectonic characteristics and law of coal.This paper analyses the basic characteristics and law of coal of geological structuraldevelopment on Weibei coalfield,study on palaeostructure, syndepositional structures and thelate tectonic movement,work out the structure development characteristics of Weibeicoalfield,and analysis of different periods tectonic movement influence on coal seamoccurrence regularity, the following conclusions:(1) Ancient structures and plant conditions, determine the late carboniferous epoch toform a good coal accumulating environment.(2) The central paleo uplift and38°N structural bet from paleostructural continue tosyndepositional structures, make the ordos basin in the late palaeozoic coal accumulationzoning, the phenomenon of the north.south partition.(3) Influenced by the ancient uplift, Weibei coalfield base overall settlement amplitudeand coal.bearing properties are best mining area in Seoul, chengcheng close second miningarea, the Pope and tongchuan mining area is the worst.(4) In Weibei coalfield in the middle part of the main faults,things on both sides tofold.By4NE.trending fault concentrated bet and3EW. trending fault concentrated betinterweave each other and to the coal field in central convergence, form a pattern of coalfieldstructure of weihe river.(5) The combination of structure form are "λ" shaped structure, echelon structure, laddershaped structure, horst, graben and imbricated thrust, etc. Construction of buried depth, theoccurrence of the coal seam and coal quality have influence; make coal seam breakage,stretched thin, impact of coal mine safety production.