煤矿安全2017，Vol.48Issue(2)：149-152,4.DOI:10.13347/j.cnki.mkaq.2017.02.040
东欢坨矿瓦斯地质特征及其控制因素分析
Gas Geological Characteristics and Control Factors Analysis in Donghuatuo Mine
王国华 1冯光俊 2刘刚 3陈崇域2
作者信息
- 1. 开滦(集团)有限责任公司,河北唐山063018
- 2. 中国矿业大学资源与地球科学学院,江苏徐州221116
- 3. 中国矿业大学煤层气资源与成藏过程教育部重点实验室,江苏徐州221116
- 折叠
摘要
Abstract
In order to clear the gas geological characteristics and controlling factors in Donghuantuo Mine,based on geological exploration data of coal field,gas geology data,mining and drilling data,we study the generation,evolution,occurrence and emission of the gas in study area,and further analyze the geological control factors of gas characteristics.The results show that the gas is mainly formed in the deep thermal metamorphism at the end of Middle Triassic.The gas geological controlling factors include geological structure,depth,thickness,hydro-geological characteristics and litho-logical properties of the coal seam.The reason of low gas content in the mine is the function of large-medium tensional fault and hydrodynamic escape.What's more,the characteristics of coal seam buried depth lead to an increasing trend of the gas content from SE to NW,while the local high value area occurs in the zone of thick coal seam and density lithology of roof and floor.The gas emission increases suddenly from the zone of the small normal fault and the sharply changed zone of coal thickness,and to be more obvious in the deep area.Therefore,attention should be paid to prevent gas anomaly when the mining crosses the zone.关键词
瓦斯赋存/瓦斯涌出/地质控制因素/东欢坨矿/地质构造Key words
gas occurrence/gas emission/geological controlling factor/Donghuantuo Mine/geological structure分类
矿业与冶金引用本文复制引用
王国华,冯光俊,刘刚,陈崇域..东欢坨矿瓦斯地质特征及其控制因素分析[J].煤矿安全,2017,48(2):149-152,4.
