煤矿软岩扩孔钻头研发及其锚固效果试验研究林健

441Vol．44No．120161CoalScienceandTechnologyJan．201612121212121.1000132.100013、。5.3mm100mm112.3kN1.55。。TD35A0253－2336201601－0079－05ＲesearchanddevelopmentonreamerbitofminesoftrockandexperimentalresearchonanchoringperformanceofreamedboreholeLinJian12WangZhengsheng12YangJinghe12ＲenShuo12WangYang121.DepartmentofMiningandDesignTiandiScienceandTechnologyCompanyLimitedBeijing100013China2.MiningandDesignBranchChinaCoalＲesearchInstituteBeijing100013ChinaAbstractAccordingtothegenerallowboltanchoringforceandnotmeetthedesignedrequirementoftheboltanchoringforcewhentheboltsupportappliedtotheminesoftandbrokensoftrockroadwayatopreamingheadoftheminesoftrockboreholewasdeveloped．Theboreholereamingeffectandtheanchoringperformancecomparisontestofthereamedboreholeswereconductedinthelabandtheunder-groundminesite．Thetestresultsshowedthatareamingdiameterofanewresearchedanddevelopedreamingheadattheboreholereamingsectioncouldbeabout5．3mmlargerthantheconventionalboreholediameter．Inthe100mmshortanchoringpullingcomparisontestsoftheundergroundminethemaxanchoringforceoftheboltinthereamedboreholecouldbeupto112．3kNandcouldbe1．55timeshigherthantheanchoringforceoftheconventionalborehole．Meanwhilewhenthebondingfailureoccurredbetweentheresinanchoringcartridgeandboreholecoalandrockwallagoodmechanicalfrictionalresistancecouldkeepabasicunchangingoftheboltanchoringforceandcouldfullyreflectexcellenteffectofthereamedboreholeanchoringinsoftrock．Keywordsboltsupportsoftrockroadwayreamerbitanchoringperformance2015－09－25DOI10．13199/j．cnki．cst．2016．01．013U1261211“”2012BAB13B022013MS0101969—。[e-mail]reamerbitofminesoftrockandexperimentalresearchonanchoringperformanceofreamedboreholeJ．CoalScienceandTechnology201644179－83．0。。、、、1。2972016144。3、4－6、7－9、10－13。、。、、。14－15。。28～35mm。1620%～30%66%。17。。1。、。1。1Fig.1Ｒeamerbitofsoftrock22.1。56mm。。10MPa30mm1MSK2335。2.22。2。。30mm31.4mm36.7mm5.3mm。2Fig.2Ordinarybitdrillingandreamerbitdrillingeffect2.33。450mm。2200kN。206kN132kN0820161229kN。3Fig.3Anchoringeffectcontrastcurvesofcommondrillingandreaminghole4。。4Fig.4Expandinganchoragesubdivisionphotos3。5－2。3.12。30mm160mm440mm。2400mm540mm。400mm540mm140mm。500mm。22mm、500mm。2100mm23mm、95mm23mm、165mm。1h。3.25。31.5mm36.8mm。。3.36。72.5kN58.9kN112.3kN1.55。110kN。5Fig.5Ｒeamingeffectpictureinsite43、20～100kN、。、、、、“”。1820161446Fig.6Pullingtestcurvesinsite。200kN22mm。51、。25.3mm。3100mm72.5kN112.3kN1.55。。4。1．M．199512－20．2．J．201116167－70．HuBinKangHongpuLinJianetal．FeasibilitytestofanchoringsandstonehydratedroofofroadwaysurroundedbysoftrockinFengshuigoucollieryJ．CoalMiningTechnology201116167－70．3．J．201029S12604－2609．GaoYanfaWangBoWangJunetal．Testonstructuralpropertyandapplicationofconcrete－filledsteeltubesupportofdeepmineandsoftrockroadwayJ．ChineseJournalofＲockMechanicsandEngineering201029S12604－2609．4．J．200221S22574－2578．LiGuofuJiaAnliShanZhiyongetal．Studyandapplicationofboltingandgroutingsupporttechniqueinextremelysoftrockroad-wayJ．ChineseJournalofＲockMechanicsandEngineering200221S22574－2578．5．J．200825141－45．DongTaoXieYouyouZhuHualinetal．Applicationofyieldpressureandbolt－groutinginsoftrockroadwayJ．JournalofMining＆SafetyEngineering200825141－45．6．J．200524162889－2893．WangLianguoLiMingyuanWangXuezhi．StudyonmechanismsandtechnologyforboltingandgroutingspecialsoftrockroadwaysunderhighstressJ．ChineseJournalofＲockMechanicsandEn-gineering200524162889－2893．7．J．2010294649－664．KangHongpuWangJinhuaLinJian．CasestudiesofrockboltingincoalmineroadwaysJ．ChineseJournalofＲockMechanicsandEngineering2010294649－664．8．J．200611659－62．LinJian．ApplicationofhighstrengthhighstiffnessandpoweredanchorsupportingsystemindeephighstressandsoftrockＲoad-wayJ．CoalMiningTechnology200611659－62．9．“”J．201318143－46．LinJianFanMingjianHuBinetal．Technologyofprotectingroadwaywithsmallcoal－pillarincrackedcoal－seamunderhy-droussandstoneroofJ．CoalMiningTechnology201318143－46．10．J．2011362223－228．WangWeijunPengGangHuangJun．Ｒesearchonhigh－strengthcouplingsupporttechnologyofhighstressextremelysoft2820161rockroadwayJ．JournalofChinaCoalSociety2011362223－228．11．J．2006233346－349．ZhouHengQiTaiyueXiaoFengetal．Mechanismofhigh－strengthboltandbolting－groutingsupportinsoftroadwayandItsapplicationJ．JournalofMining＆SafetyEngineering2006233346－349．12．J．201027113－18．ZhangCanZhangNongXuXingliangetal．SupporttechniqueintensifyingsoftbrokenroadwaywithhighgroundstressJ．Jour-nalofMining＆SafetyEngineering201027113－18．13．J．2005279977－980．HeManchaoGuoZhibiaoＲenAiwuetal．Deepsoftrocksup-portingtechnologyoftherepairprojectfortransporttunnelinLi-uhaicoalmineJ．ChineseJournalofGeotechnicalEngineering2005279977－980．14．SMWJ．201032S1261－264．HuangWeidaZhangMingLanYongjietal．PracticeofSMWmethodandreameringanchorsindeepandlargefoundationpitsJ．ChineseJournalofGeotechnicalEngineering201032S1261－264．15．J．200811875－76．NingJiaxuMaHongchaoLiuXinglong．HowtoimprovetheboltpullingforceinprotectionprojectofstoneculturalrelicsJ．GeotechnicalEngineeringWorld200811875－76．16．J．20093061615－1619．Hu