河南科技HenanScienceandTechnology机械与动力工程总第802期第8期2023年4月大跨越基础复杂地质钻孔灌注桩成孔机械选用及质量控制钟文万华翔汤小兵单长孝（安徽送变电工程有限公司，安徽合肥230022）摘要：【目的目的】对±800kV白浙线长江大跨越工程复杂地质下的桩基施工难题进行分析，并提出解决方案，为今后同类型工程施工提供建议。【方法方法】本研究从优化施工机械选用、细化施工方法、合理运用长护筒、采用新型制浆材料等方面入手，充分发挥旋挖钻机对包含流沙的复杂地质适应性好、对深层岩石掘进效率高等显著优势，同时辅以北斗导航桩基信息化系统及超声波成孔检测装置等技术手段。【结果结果】在采取有效措施优化施工方案后，大跨越桩基施工效率及成孔质量均得到显著提高。【结论结论】经工程实际验证，优化施工方法后的旋挖钻机在复杂地质桩基施工中全部实现预期目标。关键词：旋挖钻机；钻孔灌注桩；复杂地质；大跨越工程；北斗导航系统中图分类号：TU753.3文献标志码：A文章编号：1003-5168（2023）08-0045-05DOI：10.19968/j.cnki.hnkj.1003-5168.2023.08.009SelectionandQualityControlofDrillingMachineforLargeSpanFoundationComplexGeologicalBoredPileZHONGWenWANHuaxiangTANGXiaobingSHANChangxiao(AnhuiElectricPowerTransmissionandTransformationCo.,Ltd.,Hefei230022,China)Abstract:[Purposes]Toanalyzethedifficultiesandsolutionsofpilefoundationconstructionundercom⁃plicatedgeologyof±800kVBaizheLineYangtzeRiverspanproject,andtoprovidesuggestionsfortheconstructionofsimilarprojectsinthefuture.[Methods]Startingfromoptimizingtheselectionofcon⁃structionmachinery,refiningconstructionmethods,rationaluseoflongguarddrum,adoptingnewpulp⁃ingmaterials,etc.,therotarydrillingrighasthesignificantadvantagesofbetteradaptabilitytocomplexgeologyincludingquicksandandhigherefficiencyfordeeprockexcavationcomparedwithtraditionalcir⁃culatingdrillingrig.Atthesametime,Beidounavigationpilefoundationinformationsystemandultra⁃sonicholedetectiondeviceandothertechnicalmeansareadopted.[Findings]Aftertakingeffectivemea⁃surestooptimizetheconstructionscheme,theconstructionefficiencyandpore-formingqualityoflarge-spanpilefoundationaresignificantlyimproved.[Conclusions]Thro...
