临淮岗主坝开孔垂直联锁混凝土砌块护坡试验研究

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1、第1O卷第5期南水北调与水利科技Vo1．10No．52012年10月South-to-NorthWaterDiversionandWaterScience&TechnologyOct．2012doi：10．3724，8P．J．1201．2012．05153临淮岗主坝开孔垂直联锁混凝土砌块护坡试验研究杨中，王桂生(中水淮河规划设计研究有限公司，安徽蚌埠233001)摘要：临淮岗主坝护坡量大、工期紧，波要素远大于一般堤防工程，且坝基下有淤泥质土层，现浇混凝土护坡难以适应坝体沉降变形，砌石护坡石料开采困难，常规混凝土砌块护坡厚度较大。为解决主坝护坡存在的技术难题，临淮岗主坝护坡首次采用“无绳

2、索开孔垂直联锁砌块”，该砌块特别设计的开孔，有利减小波浪作用产生的浮托力，垂直联锁设计可实现砌块三维空间上相互咬合，增强整体性，减小护坡厚度。通过对荷兰Pilarczyk公式、Breteler公式及根据砌块护坡稳定性系列试验研究导出的计算公式几种计算方法进行研究比较，结合临淮岗主坝抗风浪模型试验，合理确定开孔垂直联锁混凝土砌块厚度，提出了砌块设计具体技术指标。关键词：临淮岗工程；主坝；开孔垂直联锁混凝土砌块；护坡研究；厚度计算；技术指标中图分类号：Tv861；TV871．1文献标识码：A文章编号：1672一l683(2o12)05—0153—04ExperimentofVertical

3、InterlockingConcreteBlockRevetmentwithOpeningsforMainDamofLinhuaigangProject’04NGZhong．f4^，GGui-sheng(ChinaWaterHuaihePlanningDesignandResearchCo．，Ltd，Bengbu233001，China)Abstract：ThemaindamofLinhuaigangprojecthasalargerevetmentslopevolumeandatighttimeschedule，anditswavepa-rametersaremuchlargerth

4、anthoseofthegeneralembankmentproject．Thereisasiltlayerunderthedanafoundation，andthecast-in-placeconcreterevetmentisdifficulttoadapttothesubsidencedeformationofthedarn．Thestonematerialfortheblockrevetmentishardtobeexplored，andthethicknessoftheconventionalconcreteblockrevetmentisgenerallylarge．Ino

5、rdertosolvethetechnicalproblemsoftherevetmentofthemaindam。therevetmentofthemaindamfortheLinhuaigangprojecta—doptsthetechnologyof“non-ropeverticalinterloekingblockwithopenings”forthefirsttime．Theblockhasspeciallydesignedopenings。whichcandecreasetheupliftingpressurecausedbywaveaction．Thedesignofve

6、rticalinterlockingcanrealizethemu—tualinterlockingoftheblocksinthethree-dimensionalspace，whichcanthenenhancetheintegrityandreducethethicknessoftherevetment．BasedonthecomparisonamongthePilarczykformula，Bretelerformula，andsevera1derivedcalculationmethodsobtainedfromaseriesofblockrevetmentstability

7、tests。andaccordingtotheanti-wavemodeltestofthemaindamfortheL一huaigangproject。thereasonablethicknessoftheverticalinterlockingconcreteblockwithopeningsisdeterminedandthespecif-icallytechnicalindicatorsfortheblockdesignareprese