贵诚煤矿M14瓦斯抽放系统设计_图文

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1、贵诚煤矿M14瓦斯抽放系统设计摘要：贵诚煤矿位于贵州省织金县东北方向，该矿井属于高瓦斯矿井，其中M14煤属于高瓦斯低透气性煤层。本文首先对贵诚煤矿和M14煤的基木情况进行了介绍，利用搜集到的基本参数计算了M14煤的瓦斯储量和论述了对该采区进行瓦斯抽放的口J行也针对该采区开采时瓦斯涌出量大和瓦斯超限等问题，说明了对该采区进行瓦斯抽放的必要性。本文论述了当前瓦斯抽放的一些方法，结合M14煤的实际情况，确定了该采区应用本煤层预抽、边掘边抽和釆空区抽放相结合的综合瓦斯抽放方法。根据煤层的高瓦斯低透气性特征，通过计算，确定了设计参数以及钻场和钻孔的布置方式。Z后对瓦斯抽放系统进行设

2、计，进行管路敷设线路和管网抽放量得确定，以及抽放管路选型和管网阻力计算。设计了抽放系统管网的布置形式，根据计算的管网阻力与流量，选择了与抽放能力相匹配的瓦斯抽放泵及抽放管路附属装置及设施。然后对整个瓦斯抽放系统进行了经济概算，制定了整个抽放系统的安全技术措施，论述了抽放瓦斯的综合利用和抽放站的配套设施。最后制定了瓦斯抽放的规章制度。关键词：贵诚煤矿；M14煤；高瓦斯；瓦斯抽放GasdrainagesystemdesignofGuichengMineAbstract:GuichengMineislocatedinnortheastofZhijin,GuizhouProvin

3、ce・Theminebelongstogasoutburstmines,ofwhichtheM14workingareabelongstohighgasandlowpermeabilitycoalseam,thisthesisintroducesthebasicconditionsofGuichengMineandtheM14workingarea,usesthebasicparametersgatheredtocalculatethegasreservesoftheM14workingarea,anddiscussesonthefeasibilityofgasdrain

4、ageintheworkingarea.Aimingattheproblemsthatthereisalargeamountofgasemissionandthegasoverrunswhenmining,itexplainsthenecessityofgasdrainageintheworkingarea・ThisthesishasdiscussedsomeofthegasdrainagemethodsandcombinedwiththeactualsituationoftheM14workingareatodeterminethattheintegratedcombi

5、nationofgasdrainagemethodthatPredrainaging,DrainagingwhiletunnellingandGoafplumbshouldbeimplementedintheworkingarea.Accordingtothecharacteristicsthathighgasandlowpermeabilityofthecoalseam,itdeterminesthedesignparametersandthearrangedstylesofthedrillfieldsanddrillholesthroughcalculation.Th

6、enitcarriesonthedesignofthegasdrainagesystemandthepipelinelaying,detenninationthedrainagevolumeofthepipelinenetworkandtheselectionofthedrainagepipelinetypeandthecalculationofthepipelinenetworkresistance.Thepipelinelayoutformsofthedrainagesystemaredesigned,accordingtothecalculationoftheres

7、istanceandrateofflowofthepipelinenetwork,thegasdrainagepumpanddrainagepipelineauxiliaryequipmentandfacilitieswhichmatchwiththedrainagecapacityhavebeenchosen.Thenitmakestheeconomicbudgetandthesafetytechnicalmeasuresofwholegasdrainagesystem,anddiscussesthecomprehensiv