砾砂灰岩富水地质深基坑止水帷幕施工技术

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GUANGDONGARCHITECTURECIVILENGINEERING201344APR2013No.4,,,,。,,。,,,,、、,,。11.1、、,,,,、,。1.2⑴,,,。,,,,,,。⑵,,,,、。,,,。(510115):,、、,,。:;;;;TheWaterproofCurtainConstructionTechnologyofDeepExcavationinGravelLimestoneandWater-richGeologicalLiangZhuohua(GuangzhouJishiConstructionGroupCo.,Ltd.Guangzhou510115,China)Abstract:Inthispaper,thewaterproofcurtainconstructionmethodofdeepexcavationingravellimestoneandwater-richgeologicalwhichthoughmodifyingthemotoroftraditionalmixingpilemachine,drillpipeanddrillbithavebeenintroduced.Andtheconstructionmethodofguidingholebeforejet-groutingforsolvingtheconstructionproblemsofthicksandlayerandweakweatheringlimestonecontactingwithgeologyhavebeensolved.Inadditional,thequalityofthewaterproofcurtainintheexcavationhasbeenimproved.Keywords:mixingpile;jet-groutingpile;sandlayer;rockstratum;waterproofcurtain332f600@140014004001①②⑩輥輱訛輥輯訛③①輥輰訛④⑤⑥⑦⑧⑨①②③④⑤⑥⑦⑧()⑨⑩輥輯訛輥輰訛輥輱訛:APR2013No.420134422.1,(1),,,。,,,,,,。,:①,;②、。,,:①45kW60kW;②;③。2.280kgm,0.24m3,42.5R,0.5,0.8m3,,,3.33m。2.3,60cmmin、,0.7MPa,,,,,,30s,,,、,。2.4,,f600,(2),。2.5,,1MPa,f100,2m,12m3min。,,,0.5%。2.642.5R,1.0,0.28m3,0.8m3,,,3.33m。2.7,。25MPa,10rmin,30s,15cmmin。1m30MPa,10cmmin,-11.00m,。3,“+”,,,。,、,,。,,(18)349。,、、,,,,。754,。,,、、。8,,,,,,,,。[1]JGJ94-2008[S][2]GB50202-2002[S][3]GB50204-2002(2011)[S][4]SJG05-2011[S][5]JGJ18-2003[S][6],,.[P].:ZL201210508801.X:APR2013No.420134444444444444444444444444444444444444444448(34),、、。,,,,,。[1],,.[J].,2012(10)[2],,.[J].,2012(6)[3].[J].,2004(1)[4],.[J].,2003(2)18

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