Research On Coal Seam Characteristics Based On SURPAC

With the increase of mining depth, speed and scale of coal resources, more and more complex geological condition, hydrogeological condition, efficient and safe production of coal seam to bring serious security hidden danger, only according to the laws of the coal seam occurrence, scientific organize production, can effectively avoid the risk of mining, improve the efficiency of coal mining.Statistical mining area geological information collected in this paper, the downhole practical strata, on the basis of systematic study of the Suntuan field10coal seam stability characteristics, and influence the occurrence characteristics and regional geological features, sedimentary environment of coal seam thickness, recoverable coefficient, variation coefficient, the immediate roof lithology and thickness of immediate roof and immediate roof sandstone rate, fracture fractal dimension value and the analysis of the fracture zone with Suntuan10coal seam mining field is established entity3DM model, has carried on the10coal seam occurrence condition of Suntuan field comprehensive evaluation, the main achievements and knowledge are followed:(1) in the study area10coal seam thickness, the analysis of the coefficient of variation coefficient and recoverable, it is concluded that most areas of Suntuan field10coal seam of coal seam and the stability of coal seam, the more stable only tiny central area belongs to the unstable coal seam;(2) coal seam of10coal seam roof and floor lithology and lithologic:on the relationship with thick coal roof and floor for mudstone area of coal seam is relatively thick, relatively thin coal seam and sandstone distribution area;(3) application software SURPAC established Suntuan geological database mining field, within the scope of the field is generated10entity of coal seam3dm model, through comparing with actual data analysis, SURPAC established physical model, only local small differences, orebody entity model is effective and conforms to the actual situation;(4) use the analytic hierarchy process, coefficient of variation, recoverable index, the direct roof coal thickness, lithology and thickness of immediate roof and immediate roof sandstone rate, fault and fault fractal dimension values affected zone8indexes, such as10coal seam occurrence condition in the study area for the comprehensive evaluation, the results show that the Suntuan10coal seam occurrence condition is good, and good mining field area, accounts for about75%of the entire field of occurrence condition and general area accounts for about25%of the mine area.