资源描述：
《砌石坝老化病害成因及治理加固技术》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、山东农业大学学报(自然科学版),2008,39(2):283-290JournalofShandongAgriculturalUniversity(NaturalScience)砌石坝老化病害成因及治理加固技术111李荣之,郑灿堂,刘建生(1.山东省莱芜市莱城区水利局,山东莱芜271100;山东省水利科学研究院,山东济南25001;2.东阿恒信地产公司,山东东阿252200)摘要:根据对大量砌石坝实地考察及国内外相关资料评析,将砌石坝老化病害归纳为应力超强和稳定性差、裂缝和断裂、渗水和漏水、溶蚀和潜蚀、冻融和剥蚀、松石和脱皮、水质侵蚀以及强度衰减和刚度降低等类型。上述病害有的是由自然
2、老化或环境因素变化所致,有的是因设计安排不周、施工掌握不严、砌筑材料质量差、使用功能改变遭受超设计荷载等原因造成的。无论是哪种原因造成,其总的危害都是影响工程安全,逐渐发展会使正常坝变成病坝,病坝变成险坝,甚至导致溃坝失事,须及时治理加固。文中简要介绍了坝体灌浆、培厚加固、铺镶卷材、换面嵌缝以及喷涂防渗面层等行之有效的砌石坝病害治理加固技术。关键词:砌石坝;老化病害;正常坝;病坝;险坝;治理加固+中图分类号:TV223.24文献标识码:A文章编号:1000-2324(2008)02-0283-08THECAUSESOFAGINGDISEASESANDREINFORCESTECHNIQ
3、UESFORSTONEMASONRYDAM112LIRong-zhi,ZHENGCan-tang,LIUJian-sheng,ZHENGFu-hai(1.LaiChengCityBureauofWaterResourcesofLaiwuCityinShandongProvince,LaciWu27100,china;WaterResourcesResearchInstituteofShandongProvincejtnan250011,china;2.HengxinrealestatecompaniesofDonge'countryDonge'252200,china)Abstrac
4、t:Bysuruegingofagreatdealofstonemasonrydamsandanalgzingofdomesticandoverseasdatum,agingdiseasesofthestonemasonrydamscanbedividedintostrongstressandbadstability,crackandbreak-age,waterseepageandleakage,corrosionandsubsurfaceerosion,freeze-thawandabrasion,looserockandshedskin,waterqualityerosion,
5、strengthdecreaseandstiffnessdegradationtypesanalgzing.Someoftheabove-mentioneddiseasesareproducedbynaturalagingorthechangeofenvironmentfactor.Othersareproducedbyculpablearrangemen,tundemandingconstruction,badqualitybuildmaterialsorexceedingdesignedloadbe-causeofthefunctionchangeetc.Whetherwhith
6、reason,itmustaffecttheengineeringsafety,Thenthegradualdevelopmentwillmakethenormaldambecomethediseasedam,thediseasedambecomeinsurancedam,evencausedamcrash.Sothedammustbereinforcedintime.Inthispaper,someagingdiseasesandeffectiverein-forcedtechniquesforstonemasonrydamarementioned,suchasdambodygro
7、uting,dambodythicdeningrein-force,changingfaceandveneerjointing,injectingwatertightfacing.Keywords:Stonemasonrydam;agingdisease;normaldam;diseasedam;dangerousdam;managementandrein-force1前言据不完全统计,截至1999a底,我国已建大、中、小型砌石坝水库2684座,是世界上砌
