Quantitative Division Of Mine Geological Types

It's a basic geological work of quantitative division of mine geological types,which relates to the production of coal mine,and plays a very important role.The evaluation of quantitative division involves many aspects,including structure of mine,coal seam,hydrology,methane,and coal seam roof and floor etc.The paper arranges the data of evaluation into the database of geological,according to the Regulations of Coal Mine Geological,Code for Geological Exploration of Coal and Peat,and Provisions for Prevention and Control of Water in Coal Mine,then finishing the evaluation of geological type by establishing a series of evaluation system.The data of the geological database is from coal geological account,which is built by Vfp database language,and is a foundation of geological type;The structural complexity involves folds,faults,and magmatic rocks,which can be inducted as structural evaluation index and economic and technical index,then selecting these indexes and the weight of these are put up by grey correlation method,finally,the level of structural complexity is given by fuzzy comprehensive evaluation.The stable degree of coal seam mainly calculates three indexes by mathematical statistics method,including average thickness of coal mine,mineable coefficient of coal thickness,the variation coefficient of coal thickness,which shows that the discrete degree of the coal thickness and admissibility;the method of trend surface analysis to illustrate the spatial occurrence features and regulation of varieties of coal seam,and evaluation grade is determined by fuzzy comprehensive evaluation;The evaluation of hydrogeology mainly contains extracting data from database,and calculating,analysis of data,then giving the final level,according to Provisions for Prevention and Control of Water in Coal Mine;Other mining conditions of geology involves the evaluation of coal seam roof and floor,coal seam pitch and other distinctively mining conditions of geology,particularly,it's a difficult to evaluate coal seam roof and floor,which has a unified standard,and the paper preliminary use fuzzy comprehensive evaluation to give the level of coal seam roof and floor,and the result will be verified in the later,basing on references;Ultimately,giving the result of quantitative division of mine geological types,by using principle of "care about high not about low".The established evaluation system is applied to Dong po mine,the quantitative result is consistent with qualitative evaluation,which illustrates that the system is correct and reasonable,and provides some reference function for other quantitative division of mine geological types.