《地质专业毕业设计(论文)_刘庄煤矿8煤层瓦斯赋存特征及其影响因素》.doc

本科毕业论文 刘庄煤矿8煤层瓦斯赋存特征及其影响因素 The methane Hosting Features and Influencing Factors of Coal-bed No.8 in liuzhuang Coal Mining刘庄煤矿8煤层瓦斯赋存特征及其影响因素 摘要 煤层瓦斯是生于煤层、储于煤层的非常规天然气，主要成分为甲烷。煤与瓦斯突出是煤矿开采过程中严重的灾害之一，瓦斯问题已成为制约矿井生产能力、 影响矿井安全生产和经济效益的重大问题。本文通过对刘庄煤矿井田勘探、生产阶段地质、瓦斯与现场实验资料的研究分析，从而得出8煤层的瓦斯分布规律、瓦斯涌出量特征、煤储层压力特征等瓦斯赋存特征，以及影响其赋存特征的各影响因素。 本文首先通过分析、整理资料，总结出井田的地质、瓦斯概况，及井田的地层、煤层、地质构造、煤层顶底板岩性、水文地质条件等地质概况，瓦斯风化带和瓦斯含量分布等瓦斯概况。 随后在分析资料的基础上得出8煤层的瓦斯赋存特征：经统计资料，用回归分析的方法得出瓦斯含量具有随埋藏深度增加而增大的整体趋势；试井资料表明8煤层为高压煤层；历年的瓦斯涌出量统计表明刘庄煤矿瓦斯等级为突出矿井；用分源预测法和回归分析得到8煤层涌出量分布散点图，由图看出煤层瓦斯涌出量具有随埋深加大而增加的变化趋势，相对其它主采煤层来说，8煤瓦斯相对涌出量随深度的变化梯度要低得多。 最后，通过对8煤层的瓦斯分布规律的分析研究表明，8煤层的瓦斯赋存主要受地质构造、煤层的顶底板岩性、煤层埋深、水文地质条件、煤层上覆基岩厚度等因素的综合影响。 关键词：瓦斯赋存特征，瓦斯涌出量特征，影响因素The methane Hosting Features and Influencing Factors of Coal-bed No.8 in liuzhuang Coal Mining ABSTRACT The mine methane is an unconventional natural gas that was born in the coal seam and stored in the coal seam. It is composed mainly of methane. Coal and gas outburst is a serious disaster in coal mine. The methane is a major problem which has restricted the production capacity of coal mining, effected coal mine safety and economic benefits. By the exploring of the LiuZhuang coal mining, studying of the production stage geology and analyzing the data of the methane’s field experiments, this paper has grasped the law of the methane subsection，characteristics of the methane emission and pressure characteristics of existing features, and impacted characteristics of the occurrence of various factors. By the analyzing and collating information, this paper summed up the mine field of the geology, the coal seams, the geology structure, the roof and floor rocks, the watering geology, the methane distribution, the methane content of overview and so an. Based on collection analysis of the primitive data, this paper has grasped the methane hosting features of the coal-bed No.8: The statistics, obtained by regression analysis the gas content increases with the burial depth of