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《中厚煤層沿空留巷圍巖控制技術(shù)-研究》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫。
1、太原理工大學(xué)碩士研究生學(xué)位論文STUDYONSURROUNDINGROCKCoNTROLTECHNOLOGYOFTHERETAININGROADⅥ，AYALONGGoAFINTHEMIDDLETHICKCOALSEAMABSTRACTWithcoalproductionincreasing，exceedofthegascontenthasbecomethemainreasonofhighproductionandefficiencyintheworkingplaneofmedium-thicknesscoalseam．Thetechnologyofretainingroadwayal
2、onggoafisoneofthemosteffectivewaystogovernhighgasintheworkingplane．RoadwayalonggoafCanalsogreatlyimprovetherecoveryrateofcoalresources，torealizereciprocatingmining，toreducetheminingroadwaydrivagerateandthemovingtime．Thistechnologyissuperiority，andhasremarkableeconomicbenefit．Inthispaper，through
3、thecombinationoftheoreticalanalysis，numericalsimulationandengineeringpractice，surroundingrockdeformationandactivitypaaemswerestudiedonthebasisofpreviousanalysis．Thearticleproposestechnologyofsurroundingrockcontrolofretainingroadwayalonggoafinmedium．thicknesscoalseam．Themainresearchworksareasfol
4、lows：(1)IntroducingHouChaojiongconceptofbigandsmallstructuresintoIII太原理工大學(xué)碩士研究生學(xué)位論文surroundingrockstabilitystudyofretainingroadwayalonggoafinmedium．thicknesscoalseam．UndertheactionofobturatorandMined．outareas’brokenrock，thehardoldroofwhichisaboveatthetestroadwayhasrebalancedandformedthenewstruc
5、ture．Wecalledlargestructureofsurroundingrockofroadway．Thehangingactionwithboltsandanchorcablemadetheunstableroofanchortogether，andthisstructurecalledthesmallstructureofsurroundingrock．(2)Throughtheestablishmentofthekeyblockmechanicsmodelandmechanicalanalysis，weconcludedthat：duringtheperiodofrec
6、overyoftheupperandlowerworkingface，thekeyblockoftestroadwayhaslargerotation，butnotloseitsbalance．SoiftheyCanmaintainimmediateroofstability，retainingroadwayalonggoafCanbesuccessfullyimplementedinmedium．thicknesscoalseam．(3)Proposedobturatormustbothhasenoughinitialsupportforceandhascertaincontrac
7、tility．BecausesufficientinitialsupportforcecarlensuretheobturatorcutofftheroofattheedgeofMined—outareas．CntractilepropertiesCanpreventobturator仔omdamagedbyupperlargestructure’Srotarysinking．(4)Roadsidepackinginmedium-thicknesscoal
