東灘煤礦三采區(qū)地應力測量及應力場分析.pdf

1、山東科技大學碩士學位論文東灘煤礦三采區(qū)地應力測量及應力場分析姓名：梁繼新申請學位級別：碩士專業(yè)：礦業(yè)工程指導教師：王同旭孫新榮20050501山東科技大學碩士學位論文摘要AbstractGroundstressiStheultimateforceSOUicewhichaffectsall也egroundprojectstabilityandoneofthemainsubjectsthattheengineeringgeologylong

2、—timestudiesThisitemadoptsaconvenienceandmoreeconomygroundstresstestingmethod—soundemissionmethod(AEmethod)，measuringthethirdminesectiongroundstressofDongtancoalmine、estimatingthemaximumprincipalstress，thelevelminimumpri

3、ncipalstress，andnormalprincipalstressofthirdCOalroof40mandmotherboard30mrangeincludingthesoftrockandCOalbed；makingtheinversionanalysisof也estratumrangeof一500m～700m。obtainingthedistributingruleofthirdminesectionfield，provi

4、dingthedesigninggistfortunnelsupportingandstopeminepresscontrollingGeologyconstitutionanalysisindicatesthatthethirdminesectionofDongtanmineisthesectionofstructurestressfield，andthemaximumprincipalstressiSnorthwestwestsou

5、theasteastorientation；theresultofthethirdnlincsectioneightgroundstressmeasurepohatsindicates也attheorientationoflevelmaximumprincipalstressiS1057?！?487。田1etWOconclusions舡emainlyconformityThedistributingruleofthethirdmines

6、ectiongroundstressvatue：whiletheminingdepthislessthan790m。血elevelmaximumprincipalstressis15～19MPa。moreoverthecoalbedmotherboardiSbiggerthanroofbutaroundthefaultthesizeandorientationofgroundstresschangealot；whilethemining

7、depthis780maboutthenolTnalprincipalstressalmostamountthelevelmaximumprincit’alstress；whiletheminjngdepthiSmorethan780mthenormalprincipalstressismorethanlevelmaximumprincipalstressThemaxprincil；alstressisolinegraphofinver

8、sionanalysisindicatesthattheoldroofandoldfloorrockstratumofthecoalbedsometimeslocatesinmuch11igherstressedzone；themaxofminesectionmaximumlevelprincipalstresspresentstoFS46andFS5lfaultaroundandthesouthwestofthesectionalmo

9、st24MPa；themax，oftheminimumprincipalstresspresentstomidfaultFS51；thenlaxofthemaximumsheerstresspresentstofaultFS46andFS5landthesouthofthethirdminesectionalmost15Ⅳ陴aTunneldisposeorientationshouldparallelwithlevelmaximumpr

10、incipalstressorkeepsmallincludedangleintersecting，avoidsbothverticalorientation；intheconditionthatcannotobviatebotllverticalorientationorbigincludedangle，tunnelsupportingshouldbestrengthenedaccordingtothegroundstresssize