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页数:6页
时间:2019-03-14
《锦屏一级水电站特高拱坝温控防裂技术与实践》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、学兔兔www.xuetutu.com水利水电技术第44卷2013年第12期锦屏一级水电站特高拱坝温控防裂技术与实践王继敏,段绍辉,胡书红,刘毅(1.雅砻江流域水电开发有限公司,四川I成都610021;2.中国水利水电科学研究院,北京100038)摘要:锦屏一级水电站拱坝是世界在建最高拱坝,混凝土温控防裂是其建设中的关键技术难题。根据工程自身特点,在现有的温控防裂技术理论和工程经验的基础上,结合全过程的温控仿真及反馈分析,不断加深对混凝土温控防裂规律的认识,逐步细化本工程的温控技术标准,总结制订了一套完整的温控工
2、作评价体系,在此基础上开展4.5In仓层厚浇筑温控关键技术研究,建立了温度自动化控制系统,有效地控制了不利应力的产生并防止了温度裂缝的出现,解决了超300m级特高拱坝混凝土施工的温控防裂技术难题。关键词:特高拱坝;温控防裂;4.5In仓层厚;温控工作评价;温度自动化控制;锦屏一级水电站中图分类号:TV315文献标识码:A文章编号:1000-0860(2013)12.0041-06Practiceandtechnologyoftemperaturecontrolandanti·-crackingforsuper·
3、-higharchdamofJinpingIHydropowerStationWANGJimin,DUANShaohui,HUShuhong,LIUYi(1.YalongRiverHydropowerDevelopmentCo.,Ltd.,Chengdu610021,Sichuan,China;2.ChinaInstituteofWaterResourcesandHydropowerResearch,Beijing100083,China)Abstract:Thesuper-higharchdamofJinpi
4、nIHydropowerStationisthehighestarchdamsunderconstructionintheworld,forwhichthekeytechnicalproblemduringtheconstructionistheconcretetemperaturecontrolandanti··cracking.Basedonthecur--renttechnicaltheoryoftheconcretetemperaturecontrolandanti-crackingandtheexis
5、tingengineeringexperiences,asetofcom—pletesystemforevaluatingthetemperaturecontrolissummarizedandthenmadethroughcontinuouslydeepeningtheunderstand—ingonthelawofthetemperaturecontrolandanti·crackingandrefiningthestandardsofthetemperaturecontrolforJinpingHydro
6、-powerProjectstepbystep.Onthebasisofthis,theresearchonthekeytechnologyforthetemperaturecontrolonthe4.5inthi—nknessofconcreteplacingcabiniscarriedoutandthenanautomatictemperaturecontrolsystemiscorrespondinglyestablished,thustheoccurrenceoftheadversestressisco
7、ntrolledandtheappearanceofthetemperature-crackispreventedeffectively,more—over,thetechnicalproblemfromthetemperaturecontrolandanti-crackingduringtheconcreteconstructionofthesuper—higharchdamwiththeheightover300misfinallysolvedaswel1.Keywords:super-higharchda
8、m;temperaturecontrolandanti-cracking;4.5inthinknessofconcreteplacingcabin;evaluationsystemontemperaturecontrol;automatictemperaturecontrolsystem;JinpinIHydropowerStation气象等因素影响,特高拱坝的温控防裂技术难度更1概述
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