平煤一矿瓦斯地质规律分析

Analysis of Gas Geology Laws for No.1 Mine of Pingdingshan Coal Industry Group

根据平煤一矿地勘时期的资料、钻孔柱状信息、生产过程中的瓦斯资料,运用瓦斯地质理论,分析了平煤一矿的瓦斯地质规律。将一矿井田地质构造划分为3个地质单元:二水平东部、二水平西部、和三水平及深部;并分析了褶皱构造、断裂构造、顶板岩性、上覆基岩厚度对瓦斯赋存的影响,得出一矿井田内NW和NWW向断裂有利于瓦斯的保存,而NE和NNE向断裂对瓦斯的储集性能较差,上覆基岩厚度是一矿井田瓦斯赋存的主控因素,利用上覆基岩厚度和瓦斯含量之间的关系,推出二者之间的线性关系方程,可用于深部瓦斯含量的预测;分析得出一矿的构造煤分布规律。

According to the geological survey period data of No. 1 Mine of Pingdingshan Coal Industry Group, drilling columnar informa- tion and gas data in the process of production, we analyze laws of gas geology by using the theory of gas geology. No. 1 Mine geological structure is divided into three geological units including the east of two - level, the west of two - level, three - level and the deep ; the influence of fold structure, fracture structure, roof lithology and thickness of overlying bedrock on gas occurrence is analyzed,which con- cludes that the NW and NWW striking faults in No. 1 Mine field are conducive to the preservation of the gas, and gas reservoir perform- ance of the NE and NNE striking faults are poorer,the thickness of overlying bedrock is a main control factor of No. 1 Mine field gas oc- currence. Using the relationship between the thickness of overlying bedrock and gas content, the linear relationship equation between them is introduced, which can be used for the deep gas content prediction;the laws of No. 1 Mine tectonic coal distribution are obtained.