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The gas is a product of geological processes , gas generation, migration , preservation conditions being affected by geological processes control . Today 's coal seam gas mode of occurrence of coal-bearing strata is subjected to complex geological evolution . The paper uses the gas occurrence constructed stepwise control theory, combined with the the Fangzhuang mine production revealed a large number of measured gas data , mine gas geological theory and methods to study the history of geological evolution occurrence role in the control of Jiaozuo mining area gas analysis square Zhuang mine gas Occurrence and characteristics of tectonic control , mine hydrogeology gas hosting , content of coal mine gas and coal mine gas emission in the forecast , revealing the geological evolution of the occurrence of the Fangzhuang two mine gas control feature . Studies have shown that : ( 1 ) Taihang uplift , piedmont fault from the structure of Jiaozuo mining area control ; ② in TPFZ under the control of , NE , NNE to fault by the multi-stage crushing, shearing tectonic transformation , easy - to - gas save , an increase of coal and gas outburst , EW trending faults tensile fault is easy gas release , but concentrated in the intersection of the NE and NW faults and fault tip off tip stress , destruction of coal , gas enrichment ; ③ seam depth is one of the controlling factors of the Fangzhuang mine gas content ; the ④ mine hydrogeology is an important factor to control gas occurrence , coal interrupt fault distance is greater than 20m a matching Taiyuan Formation limestone communication , control migration and occurrence of significant gas . Findings is mine mine planning , ventilation design, gas extraction and utilization of coal and gas outburst prediction reference .
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