集賢煤礦高瓦斯煤層瓦斯抽采方法研究與應(yīng)用.pdf

1、西安科技大學(xué)碩士學(xué)位論文集賢煤礦高瓦斯煤層瓦斯抽采方法研究與應(yīng)用姓名：孫全喜申請學(xué)位級別：碩士專業(yè)：礦業(yè)工程指導(dǎo)教師：@@Subject:StudyofGasExtractionMethodsofHighMethaneCoalseamItsApplicationinJixianCoalmineProgramfuild:SafetyEngineeringName:SunQuanxi（Signature）Instruct:ChenXiaoq

2、un（Signature）ChenYiguang（Signature）ABSTRACTFiredampcontentofJIXIANcoanmineisfairlyhighthreatenedcoalproductionseriously.Gasextractiontechniqueisstudiedtheblueprintofgasextractioninthecoalmineisdesigned.Thetechniqueisempl

3、oyedtosolvetheproblemoffirdampmakesuresafetyproductionintheminesuccessfully.RegulationofmethanecontentitsdistributioninJIXIANcoalminearestudied.Atheeticalmodelofcrannyzonedistritutioninthegobissetup.Thedistributionofthec

4、rannyzoneinabovethegobofNo.9coalseamofJIXIANmineisdeterminedbymeansofdrilling.Gasextractionparameterslikeangledirectionlengtharedesignedconsideringtherangeofthecrannyzone.Itdesighedthatthehightofthebeendshouldbenohighert

5、han3~12mabovethebottomofthecoalseam10~30mawayfromthecoalpillar.Thelengthofthebeisdesignedtobe120mifthedistancebetweenthedrillingbasesis40m.Themethodofgasextractionfromtheonconditionofuptodownventilationisdetermined.Theme

6、thodsofextractingfiredampoftheneibingcoalseamwithhcrossbesextractingtheminingseamgaswithfanshapedboesextractingthecongregateduppercnergaswithelevationbesextractingthegasintheminedoutareawithpreburriedpipelinesextractingg

7、asduringdiginglanewayarestudiedsystematically.BycombiningalltheabovementionedmethodsfiredampproblemissolvedwellinJIXIANcoalmine.ThestudyisimptantfdirectinggasfatheringprobleminSHUANGYASHANcoalfieldalsoinothercoalminesofs