煤层瓦斯抽采设计毕业设计

《煤层瓦斯抽采设计毕业设计》由会员分享，可在线阅读，更多相关《煤层瓦斯抽采设计毕业设计（86页珍藏版）》请在毕设资料网上搜索。

1、 1 *煤矿煤矿二二1 1煤层瓦斯抽采设计煤层瓦斯抽采设计 摘要：巩义市大峪沟煤业集团*矿属于瓦斯突出矿井，本设计通过收集*煤矿二1煤层 瓦斯含量、透气性系数及钻孔瓦斯流量衰减系数等参数，计算了矿井的瓦斯涌出量、储 量及抽放率等瓦斯抽放基本参数。采用分源预测法，预测了该矿井的瓦斯涌出量，分析 论证了*煤矿二1煤层进行瓦斯抽放的必要性与可行性。根据矿井瓦斯涌出量来源及构 成分析，结合国家及行业标准，设计其回采工作面采用开采层预抽和边采边抽，掘进工 作面穿层钻孔预抽条带瓦斯， 采空区埋管相结合的抽采方式。 结合*煤矿开拓开采方式， 绘制了瓦斯抽采系统图，计算了最大阻力，确定了管网抽放量及管径，设计

2、了合理的抽 放系统管网布置形式， 选择了与抽采能力相匹配的瓦斯抽采泵型号。 最后又对管路铺设、 附属装置的安装及系统的安全措施进行了比较详细的说明。 关键词：瓦斯突出矿井 抽采设计 分源预测法 阻力计算 设备选型 2 The Gas Drainage System Design of the East Wing of the No.II1 Coal Seam in Huatai Mine AbstractAbstract：Gongyi City Huatai Dayugou Coal Group mine is a high-gas coal mine, the design by colle

3、cting Huatai Coal Mine No.II1 coal seam gas content, permeability coefficient and drilling parameters such as gas flow attenuation coefficient calculated emission in coal mine gas reserves and drainage rate and other basic parameters of gas drainage. The use of source prediction method to predict th

4、e amount of gas emission from the mine, the analysis demonstrated Huatai Coal Mine necessity and feasibility of a coal seam gas drainage. According to the amount of mine gas emission sources and composition analysis, combined with the national standards, the use of mining stope design its pre-draina

5、ge layer, while mining extraction and drainage Gob combination of extraction methods, the heading face using the first pumping after digging a drainage methods. Huatai coal mining combines pioneering way to draw the gas drainage system diagram, calculate the maximum resistance to determine the drain

6、age volume and diameter of the pipe network, designed a reasonable arrangement of drainage pipe network, selected with the drainage capabilities matching gas drainage pump models. And finally the installation of safety measures and systems of pipes laid attachment carried out a more detailed explanation. KeywordKeywords s：gas outburst mine drainage design predicted method by different gas source resistance calculation drag calculation equipment selection 3 目目 录录 1 引 言