資源描述：
《高壓灌漿抬動(dòng)監(jiān)測(cè)技術(shù)研究.pdf》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第26卷云南水力發(fā)電第2期YUNNANWATERPOWER35高壓灌漿抬動(dòng)監(jiān)測(cè)技術(shù)研究熊德全,趙正洪,王昆(中國水電顧問集團(tuán)昆明勘測(cè)設(shè)計(jì)研究院勘察分院,云南昆明650041)摘要:水電大壩及樞紐防滲處理的基本方法之一為灌注水泥漿液,隨著灌漿機(jī)具及工藝的日趨成熟和完備,灌漿的壓力因工程的規(guī)模及地質(zhì)條件復(fù)雜等原因而大幅提高,國內(nèi)相關(guān)大型水電工程的最大灌漿壓力已達(dá)到5~7MPa,較大的灌漿壓力一方面有利防滲帷幕體的結(jié)實(shí)耐久,另一方面對(duì)巖土層會(huì)引起次生的劈裂破壞,以及對(duì)水工結(jié)構(gòu)物產(chǎn)生的抬動(dòng)變形等危害,因此灌漿抬動(dòng)監(jiān)測(cè)
2、不容忽視。一般灌漿工程主要采用單點(diǎn)法觀測(cè)30m以上的地表層灌漿抬動(dòng)變形,本文以洪家渡水電站面板堆石壩趾板高壓灌漿試驗(yàn)的分層多點(diǎn)監(jiān)測(cè)巖層變形為主,主要介紹抬動(dòng)監(jiān)測(cè)方法及數(shù)據(jù)分析研究的相關(guān)資料,與水電基礎(chǔ)加固處理工程建設(shè)同行探討。關(guān)鍵詞:水電站;灌漿試驗(yàn);高壓力;抬動(dòng)變形監(jiān)測(cè);成果分析中圖分類號(hào):TV6981+1文獻(xiàn)標(biāo)識(shí)碼:A文章編號(hào):1006-3951(2010)02-0035-07TheTechnicalStudyofMonitoringofHighPressureGrouting-causedUpliftXIONGDe-quan,ZHAOZh
3、eng-hong,WANGKun(KunmingHydroelectricInvestigation,DesignandResearchInstitute,CHECC,Kunming650051,Yunnan,China)Abstract:Cementgroutinjectionisoneofthebasicseepagecontroltreatmentmethodsinconstructionofdamsandhydraulicstructuresofhydropowerprojects.Withripeningandperfectingofgroutin
4、gmachinesandtoolsaswellastechn-ologydaybyday,thegroutingpressureincreasesbyalargemarginbecauseofbothscaleandgeologicalconditionsofahydropowerprojectbecominglargerandmorecomplicated.Max.groutingpressurehasreached57MPainconstruc-tionoftherelevantlargehydropowerprojectsinChina.Thehig
5、hgroutingpressureenablesimperviouscurtainstobesolidanddurableontheonehandandcausessecondarysplittingdamagetorockandsoilformationsontheotherhand.Fur-ther,thehighgroutingpressurewouldcauseupliftdeformationofhydraulicstructures.Itisthereforenecessarytomonitorgrouting-causedupliftofahy
6、draulicstructure.Ingeneral,thesinglepointmethodisusedtomonitorover30mthickgroundsurfacelayergrouting-causedupliftdeformationingroutingworks.Bytakingtheconcretefacerock-filldamplinthhighpressuregroutingtestofHongjiaduhydropowerprojectasanexampleformonitoringofrockformationdeforma-ti
7、onusingmulti-pointinstrumentationarrangedinlayers,thispaperintroducesthemonitoringmethodofgrouting-causedupliftandrelevantinformationconcerningdataanalysisandstudyfordiscussionwiththecolleaguesengagedinfoundationconsolidationtreatmentofhydropowerprojects.Keywords:hydropowerproject;
8、groutingtest;highpressure;
