Sedimentary Characteristics And Accumulation Of Coal Measure In Weibei Mining Area

Based on the old mining area as the research object, weihe coal of shanxi group andtaiyuan formation sedimentary facies analysis, reducing sedimentary environment at that time,divided from the sedimentary characteristics of sedimentary system; Out of time and spaceanalysis of the coal-bearing strata distribution, analyzes the various sequence of sedimentarycenter, coal accumulating center as well as to the influence of coal seam, discusses theinfluencing factors of coal bearing strata distribution and control of coal seam thicknessrelated geological factors. By studying the thought:Area of weihe coal bearing rock series of depositional model mainly delta sedimentarysystem, sedimentary system barrier coast and offshore carbonate shelf sedimentary system,there are three kinds of research Sedimentary coal mode: coastal barrier-lagoon, meanderingriver into coal and delta-lake into coal mode. Taiyuan group of coal seams in the study areais a transgression system tract coal depositional model, coal seam of shaanxi formationmainly belong to the high system tract deposition pattern.10,11coal development in sequence Ⅰ, mulberry ping coal mine mining area coalaccumulating center in Seoul and northern xiangshan coal mine and clarification of themining area in southern west;4,5and6coal development in sequence Ⅱ, sedimentary centerlocated in the eastern part of orange Dong Guhe southern mining area coal mine, and the kingvillage coal mine; No.2and no.3coal seam and development in sequence Ⅲ, depocentermulberry ping coal mine east mining area is located in Seoul.Sedimentary environment are the main factors influencing the no.3coal seam thicknesschange. For the influence of the thickness of coal seam coal thickness is mainly manifested incoal seam no.3,5and10; Swamp base of the uneven subsidence control configuration andevolution of sedimentary environment, often causes coal thickness along the tendency ofzonality and along the direction of the partition; No.5coal seam thickness change in additionto the affected by sedimentary environment and marsh basement uneven subsidence,epigenetic scouring rivers is5factors of coal thickness thinning or missing; Later structurechange is one of the factors that affect this study area coal thickness.