【摘要】 搞清井田瓦斯赋存规律是瓦斯治理的基础，是矿井实现“一矿一策，一区一策”瓦斯治理措施的保障。以古汉山井田为例，运用瓦斯赋存构造逐级控制理论，在分析区域构造演化及控制的基础上，探讨了古汉山井田瓦斯赋存规律及主控因素。研究结果表明，石炭-二叠系含煤地层沉积之后经历的多期构造运动造就了焦作煤田现今的构造格局及瓦斯赋存特征。以团相断层及其NE向延伸方向断层为界，将古汉山井田划分为3个瓦斯地质单元。马坊泉断层与团相断层间形成的地堑是造成瓦斯地质单元1上覆基岩厚度为井田最厚的原因，同等埋深条件下瓦斯地质单元1上覆基岩厚度厚是造成该区瓦斯含量高的主要原因；赤庄断层形成的煤层隐伏露头和上覆基岩厚度薄是瓦斯地质单元2瓦斯含量井田最低的主要原因；上覆基岩厚度相同情况下瓦斯地质单元1和3瓦斯含量相差不大。更多还原

【Abstract】 It is the basis of gas control to understand the gas occurrence law in the mine field, and the guarantee of gas control measures in the mine to realize "one mine, one policy, one district and one policy". Based on the analysis of regional tectonic evolution and control, the gas occurrence law and its main control factors in Guhanshan mine field were discussed by using the gradual tectonic control theory for gas occurrence. The obtained results indicate that the present tectonic framework and gas occurrence characteristics of Jiaozuo coalfield were formed by the multi-stage tectonic movement after the deposition of the carboniferous-permian coal bearing strata.The Guhanshan mine field was divided into three gas-geology units by taking the Tuanxiang fault and its NE extending fault as the boundary.The graben formed between Mafangquan fault and Tuanxiang fault is the reason why the overlying bedrock thickness in gas-geology unit 1 is the thickest in the mine field. Under the same burial depth,the overlying bedrock thickness in gas-geology unit 1 is the main reason for the high gas content. The hidden outcrop of coal seam formed by Chizhuang fault and the thinner overlying bedrock are the main reasons for the lowest gas content in gas-geology unit 2. Under the same thickness of overlying bedrock, the gas content of gas-geology units 1 and 3 is almost the same.更多还原