Research Of Tectonic Control Characteristics On Gas Occurrence In Chengzhuang Coal Mine

Gas is the geological origin of the gas geology, geological evolution control gasgeneration, storage conditions, occurrence and distribution law.The Occurrence of thepresent coal gas is the result coal-bearing strata experienced complex geologicalinteraction.This paper study Chengzhuang mine in Jincheng Mining Group, useing tectonicsequential control on gas occurrence theory and method, ombination tectonics theoryabout plate, the regional geological evolution theory, analysis the influence of structuralevolution and its structure in mining area, thus research scope of controlling structuremine ban. search gas deposit growth characteristics and structural features in area,mining area, coal mine. analysis of the Chengzhuang coal mine methane occurrencecharacteristics and tectonic coal development, distribution characteristics, searchstructural features of occurrence of different structures of the coal seam gas controlaction.Statistics of a large number of field measurement of gas content data, analysismain control factors of coal seam gas occurrence in three coal seam of Chengzhuangmine. the combination master tectonic characteristics, gas pressure changescharacteristics, and in the process of mining to expose and observations of the gasemission, structure coaldevelopment, gas dynamic phenomenon factors and so on, toreflect the characteristics of gas occurrence, thus the occurrence characteristics of theChengzhuang coal mine divided into three gas field geological unit, to provide referencefor drainage and utilization of coalbed methane.The results were as follows:â‘ JingCheng mine area made by mining areastructure is subject to the exhibition NE NNE of cloth to fold and the direction of thecomposite structure EW role. From the structure than anticline tectonic gas occurrencecondition is complex, especially two direction from the structure of the compound site,is the best position for gas occurrence condition.â‘¡ChengZhuang mine gas by from thewhole control, in the great from the structure also in development has little inclinedback to form a composite back to the structure, this area coal seam gas occurrenceabnormalities.â‘¢The bedrock thickness is the effect of chengzhuang coal mine3#coalseam gas occurrence of major controlling factors.â‘£Chengzhuang coal mine is divided into three gas geology unit, â… with ChengZhuang north anticline in thedividing line is the central part of the mine, the southwest; â…¡with ChengZhuang northanticline in the dividing line is northwest of mine; â…¢ with sedimentary thickness isless than300m, the dividing line is to the east of the mine.