急傾斜煤層巷道圍巖變形破壞特征及支護(hù)技術(shù)研究.pdf

1、西安科技大學(xué)碩士學(xué)位論文急傾斜煤層巷道圍巖變形破壞特征及支護(hù)技術(shù)研究姓名：張永濤申請學(xué)位級別：碩士專業(yè)：采礦工程指導(dǎo)教師：伍永平2011Subject:ResearchonacteristicsofDefmationfailureofSurroundingRockSupptingTechnologyofRoadwayinSteepCoalSeamSpecialty:MiningEngineeringName:ZhangYongtao(S

2、ignature)Instruct:WuYongping(Signature)ABSTRACTWiththeincreasingofcoalminingespeciallythehighyieldhighefficiencytechnologyisdevelopedrapidlyinrecentyearscoalreservesundergoodconditionhasnearlyexhaustedinarelativelyshtper

3、iod.Sothesteepcoalseammininghasbeenpaidmemeattentionbyminingindustry.Sofarthesupptofgatewayinsteepcoalseamismainlydominatedbysingletraditionalsupptpatternswhichhasverywseeffectcannotmeettherequirementsofsafetyinproductio

4、n.Fthisreasonresearchonacteristicsofdefmationfailureofsurroundingrocksupptingtechnologyofgatewayinsteepcoalseamwillbeoneofthemajissueswhichisurgentlysolvedfchinascoalminingindustry.Throughtheanalysisofthesurroundingrockm

5、echanicsbrokenrockzoneofroadwayinsteepcoalseamtheasymmetryofdefmationfailureofroadwayinsteepcoalseamissummarizedwhichpresentsthemutualrupturedefmationacteristicswith“bottomupliftroofdecline”causesthebearingloadtothesuppt

6、ingstructureasymmetric.Therefethesupptingstructureofsurroundingrockmustbestudiedfthestabilitycontrol.BasedonthespecificacteristicsofsupptofroadwayinsteepcoalseamTheboltsteelmeshanchcombinedsupptunderasymmetricloadsisprop

7、osedthepurposeofcontrollingthestabilityofthesurroundingrockofroadwayisachievedbynonsymmetricallayoutmutualperfmancecouplebetweentheboltsteelmeshanchcombinedsuppt.TakingtheNo.3964roadwayinZhaojiabacoalmineofSichuanGuangwa