观音岩水电站左岸坝段溶蚀区固结灌浆生产性试验.docx

第14卷01期2016年2月Vol.14

第14卷01期2016年2月

Vol.14No.01Feb.2016

South-to-NorthWaterTransfersandWaterScienceTechnology

观音岩水电站左岸坝段溶蚀区固结灌浆生产性试验

冷涛1,石炜栋2

(1.湖北水利水电职业技术学院,武汉430070;2.中国葛洲坝集团基础公司,湖北宜昌443002)

摘要:观音岩水电站是金沙江中游河段的一座)等大(1)型水利工程,该电站左岸混凝土坝段坝基地质条件复杂,溶蚀现象发育,通过固结灌浆生产性试验,经过加密灌浆孔距,使灌浆孔间排距在1.25m左右后,检查孔平均透水率降至1.3Lu以下,压水检查孔段全部合格。重点介绍循环式灌浆方法?序和ò序灌浆孔施工顺序,确定合理的灌浆施工参数和施工工艺措施,并对物探孔灌浆前后声波检测情况进行了系统分析,可供同类水电站参考和借鉴。

关键词:溶蚀区;固结灌浆;孔距优化;成果分析;观音岩水电站

中图分类号:TV543文献标识码:A文章编号:1672-1683(2016)001-0088-02

CorrosionconsolidationgroutingtestatGuanyinyanhydropowerstationcsleftdam

LENGTao1,SHIWedong2

(1.WuhbeiWaterResourcesTechnicalCollege,Wuhan430070,China;

2.ChinaGezhouGroupFoundationEngineeringCo.LTD,Yichang443002,China)

Abstract:GuanyinyanHydropowerStationistheYangtzerivermiddlereachesoftherivera1big(?)thetypeofwaterconservancyprojects,suchasthecomplexgeologicalconditions,theleftbankpowerstationdamfoundationconcretecorrosionphenomenon,byconsolidationgroutingproductivetest,encryptedgroutingholespacing,thegroutingholebetweenrowspacingafter1.25meters,averageinspectionholepermeableratedroppedtobelow1.3Lu,pressurizedwaterinspectionholesectionofallqualified.Thispaperintroducesthecirculatinggroutingmethod?sequenceandòsequenceofgroutingholeconstructionsequence,todeterminethereasonablegroutingconstructionparametersandconstructiontechniquemeasures,andthegeophysicalexplorationholeacousticdetectionsystemisanalyzed,beforeandaftergroutingcanbeusedforrefer-enceinthesimilarhydropowerstationandusingforreference.

Keywords:karstarea;consolidationgrouting;holespacingoptimization;resultsanalysis;Guanyinyanhydropowerstation

1概况

1.1工程概述

观音岩水电站位于金沙江中游河段,为一等大(?)型工程,以发电