2023年10月水运工程Oct.2023第10期总第615期Port&WaterwayEngineeringNo.10SerialNo.615胶凝砂砾石施工技术在围堰工程中的实践与应用蒋渊1,张平2,牙琪敏3,李承轩1(1.中交四航局第四工程有限公司,四川成都610200;2.四川岷江港航电开发有限责任公司,四川乐山614000;3.四川港航建设工程有限公司,四川成都610023)摘要:胶凝砂砾石施工技术是将胶凝砂砾石作为围堰工程中的防冲防渗结合体结构,以替代传统防渗墙+块石护面的结构形式。针对岷江龙溪口航电枢纽工程二期一汛右岸船闸全年围堰工程的应用实践,介绍了原材料及配合比的选用、施工工艺及方法、质量控制等,重点阐述了应用过程中胶凝砂砾石与混凝土、高喷防渗墙等既有结构连接处以及施工缝面等关键部位施工工艺,并进行施工技术经济性比较。结果表明,胶凝砂砾石施工技术具有施工工艺简单、工序少、成本低、施工速度快的优势。关键词:胶凝砂砾石;防冲防渗结合体;围堰;防渗墙中图分类号:U64;TV551.3+1文献标志码:A文章编号:1002-4972(2023)10-0137-05ApplicationandpracticeofcementitioussandgravelconstructiontechnologyincofferdamengineeringJIANGYuan1ZHANGPing2YAQimin3LIChengxuan11.TheFourthEngineeringCompanyofCCCCFourthHarborEngineeringCo.Ltd.Chengdu610000China2.SichuanMinjiangPort&Shipping&ElectricityPowerDevelopmentCo.Ltd.Leshan614000China3.SichuanPortandChannelConstructionEngineeringCo.Ltd.Chengdu610023ChinaAbstractTheconstructiontechnologyofcementitioussandgravelistousecementitioussandgravelasthecombinedstructureofanti-impactandanti-seepageincofferdamengineeringtoreplacethestructuraltypeoftraditionalanti-seepagewall+blockstonecladding.Aimingattheapplicationpracticeoftheyear-roundcofferdamprojectoftherightbanklockofthesecondphaseoftheLongxikouNavigation-powerJunctionprojectinMinjiangRivertheselectionofrawmaterialsandmatchingratioconstructiontechnologyandmethodqualitycontroletc.areintroducedandtheconstructiontechnologyoftheexistingstructuralconnectionssuchascementedsandgravelandconcretehigh-sprayimpermeablewallandconstructionseamsintheapplicationprocessaremainlyexpoundedandtheconstructiontechnologyandeconomyarecompared.Theresultsshowthattheconstructiontechnologyofcementitioussandgravelhasthead...
