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I摘要那标水库位于凭祥市夏石镇夏石社区那标屯西面的左江二级支流上,距夏石镇政府所在地4km,距凭祥市市区15km,是一座以灌溉为主,兼顾防洪、养殖等综合利用的小(1)型水库。水库坝址以上集雨面积15km2,总库容330万m3,设计灌溉1700亩。主坝坝基由石灰岩和页岩组成,岩石多呈中化风状,裂隙较发育,多以压扭性为主,裂隙间连通性较好,但仍出现坝基渗漏现象。据于上述地质情况和坝体、坝基出现的渗漏现象,经有关部门研究,决定对该坝体、坝基分别进行高压喷射灌浆和帷幕灌浆处理。灌浆设计由广西水利电力技术职业学院承担,我单位中标并负责施工。关键词:小(1)型水库;二级支流;灌浆设计;左江IIHighpressurejetgroutinginPingxiangcitythestandardreservoirreinforcementengineeringStudent:WEIFa-zhanTeacher:Abstract:TheNabiaoreservoiristhesecondtributaryofZuojiangriver,whichlocatedinWestofNabiaovillage,Xiashicommunity,XiashiTown,CityofPingxiang.Itis4kmfromtheseatoftowngovernmentand15Kmfromthecitycenter!Itisasmallmulti-purposereservoirwiththemainobjectiveofirrigationaswellasfoodcontrolandfarming.Therainwatercollectionareaof15squarekilometers,thelargeststoragecapacityof3.3millioncubicmetersandthedesigningirrigationareaof1,700mu.Maindamfoundationcomposedoflimestoneandshale,therockshapedasweathering,hasalotofoffracture,mainlyincompressivetectonicregime,thefussuredconnectionisgood,buttheseepageondamfoundationstillhappened.Inconsiderationoftheabovesituation,thedepartmentsconcerneddecidedtomakehighpressurejetgroutingandcurtaingroutingtothedambodyanddamfoundationrespectively.ThedesignofGroutingwillbemadebyGuangxiTechnicalCollegeofwaterResourcesandElectricEngineering.Ourcompanywonthebidandwillresponsiblefortheconstruction.Keywords:Small(1)reservoir;Thesecondtributary;Groutingdesign;ZuojiangRiverIII目次摘要................................................................IAbstract...............................................................II1工程概况..............................................................12库区地质情况.........................................................13施工依据..............................................................14施工措施..............................................................14.1施工总布置........................................................14.2灌浆材料准备及制浆...............................................14.2.1灌浆材料......................................................14.2.2制浆..........................................................24.2.3施工机械选用..................................................24.2.4灌浆设备......................................................24.2.5高压喷射灌浆施工顺序..........................................34.2.6高喷灌浆施工工艺流程..........................................34.2.7测量布孔及电路管路铺设准备工作................................34.2.8造孔..........................................................34.2.9高压喷射灌浆的技术参数........................................44.2.10高压摆喷灌浆施工工艺.........................................54.3帷幕灌浆施工工艺..................................................54.3.1钻孔冲洗、裂隙冲洗和简易压水试................................55施工质量保证措施.....................................................65.1质量目标..........................................................65.2原材料的质量控制..................................................65.3浆液搅拌的质量控制................................................65.4浆液输送及现场施工的质量控制......................................76施工机械和人员配备...................................................76.1施工机械..........................................................76.2人员配备..........................................................77高喷防渗板墙的施工....................................................7IV8高压摆喷灌浆施工的经验................................................88.1高压喷射注浆定义概述..............................................88.1.1高压喷射灌浆的释义............................................88.1.2高压喷射注浆三重管法..........................................88.2高压喷射注浆的基本原理............................................98.2.1高压水喷射流的性质............................................98.2.2水泥与土的固化机理............................................98.3施工方法..........................................................98.3.1浆液的制作....................................................98.3.2高喷设备的要求及特点.........................................108.3.3施工设备.....................................................108.3.4钻机造孔的要求及注意事项.....................................118.3.5高喷灌浆操作要点及注意事项...................................118.3.6施工参数确定.................................................13结论................................................................15谢辞.................................................................15参考文献...............................................................1611工程概况那标水库位于凭祥市夏石镇夏石社区那标屯西面的左江二级支流上,距夏石镇政府所在地4km,距凭祥市市区15km,是一座以灌溉为主,兼顾防洪、养殖等综合利用的小型水库。水库坝址以上集雨面积15km2,总库容330万m3,设计灌溉1700亩。2库区地质情况主坝坝基由石灰岩和页岩组成,岩石多呈中化风状,裂隙较发育,多以压扭性为主,裂隙间连通性较好,但仍出现坝基渗漏现象。坝体为粘士坝,材料就地取材,主要来源于近坝的粘性士(全风化砂岩和页岩),其间夹较多的风化岩碎块,密实度一般,兼之年长日久,坝体出现渗漏比较严重。据于上述地质情况和坝体、坝基出现的渗漏现象,经有关部门研究,决定对该坝体、坝基分别进行高压喷射灌浆和帷幕灌浆处理。灌浆设计由广西水利电力技术职业学院承担,我单位中标并负责施工。3施工依据施工依据如下:(1)设计灌浆图。(2)那标水库施工招标文件。(3)《水电水利工程高压喷射灌浆技术规范》DL5200—2004。(4)《水工建筑物水泥灌浆施工技术规范》SL62—94。4施工措施4.1施工总布置由于现场施工场地比较小,在总体施工布置上,施工人员住宿、生活和灌浆材料、制浆站均布置在坝体右肩。施工用水从水库里直接抽取。4.2灌浆材料准备及制浆4.2.1灌浆材料本灌浆工程的灌浆材料主要是水泥,采用纯水泥浆灌注,水泥经有关质检部门检验合格,生产(出厂)指标及检验资料报送监理人员审查批准。(1)水泥:选用当地生产的425#普通硅酸盐水泥。2(2)水泥细度通过80um方孔筛的余量不大于5%。(3)掺合料和外加剂:经监理人员批准在浆液中加入掺合料和外加剂,各种掺合料和外加剂符合SL62—94和DL5200—2004的要求,加入量通过试验确定,
本文标题:凭祥市那标水库除险加固工程灌浆施工技术方案
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