矿煤瓦斯抽放.doc

煤矿瓦斯抽放毕业设计论文摘要随着煤矿生产技术水平的快速发展，煤矿生产能力大大提高，但是随着开采深度的增加矿井瓦斯涌出量也大大增加，矿井瓦斯已成为制约煤矿安全生产的“头号大敌”。一XX瓦斯赋存情况复杂，涌出量较大，仅靠通风方法难以解决瓦斯超限问题，因而对矿井进行瓦斯抽采势在必行。本文介绍了矿井的基本概况，对矿井瓦斯抽放的必要性与可行性进行了分析；运用分源预测法计算矿井瓦斯涌出量，并分析了不同的瓦斯抽放方法，设计了矿井的瓦斯抽放工艺；通过对井下环境的分析和抽采管径的计算，确定了抽采管路系统的相关参数；在计算抽放系统的管道阻力和瓦斯泵的流量与压力的基础上，选择了合适的瓦斯泵型号。本文对XX煤矿进行的瓦斯抽放设计，对降低工作面回采时瓦斯涌出量，减少瓦斯事故的发生，实现安全生产有重要作用。关键字：瓦斯涌出、瓦斯抽放、瓦斯抽放系统、瓦斯抽放工艺AbstractWiththerapiddevelopmentofcoalproductiontechnology,mineproductioncapacityisgreatlyimproved.Meanwhile，theminegasemissionincreasesmoreandmorewiththedepthofmine.Thegashasbecomethefirstrestrictionofcoalminesafety.Thegashazardofthemineiscomplexandthegasemissionquantityislarge,whichseriouslyrestrictsthenormalcapacityofthemine,anditisdifficulttosolvewiththemethodofventilationalone.Inthepaper,thebasicsituationoftheXXCoalMineisintroduced,andthefeasibilityandnecessityofminegasdrainageareanalysisedtoo；GasemissioniscalculatedusingtheSeparatesourcemethod,andtheminegasdrainagetechnologyisdesignedwithanalysisingthedifferentgasdrainagemethod;throughtheanalysisoftheundergroundenvironmentandtheCalculationofpumping,HYPERLINK"http://dict.baidu.com/s?wd=relevant%20parameter"\t"_blank"parametersofdrainagepipelinesystemisdetermined.basedontheresistanceofdrainagepipeandthegaspump’sflowparameters，thesuitablemodelofthegaspumpisselectedinthepaper.ThegasdrainagedesignofXXcoalminecanreducetheminegasemissionduringmineproducing,thegasaccidentswillbecontrolled,andachievingsafeproduction.Keywords：gasemission，gasdrainage，gasdrainagesystem，gasdrainagetechnologyTOC\o"1-3"\h\z\u目录HYPERLINK\l"_Toc358206784"1绪论PAGEREF_Toc358206784\h1HYPERLINK\l"_Toc358206785"1.1选题背景及研究意义PAGEREF_Toc358206785\h1HYPERLINK\l"_Toc358206786"1.2国内外瓦斯抽放现状PAGEREF_Toc358206786\h1HYPERLINK\l"_Toc358206787"1.2.1国外瓦斯抽放现状PAGEREF_Toc358206787\h1HYPERLINK\l"_Toc358206788"1.2.2国内瓦斯抽放现状PAGEREF_Toc358206788\h3HYPERLINK\l"_Toc358206789"1.3研究内容及技术路线PAGEREF_Toc358206789\h6HYPERLINK\l"_Toc358206790"1.3.1研究内容PAGERE