南水北调中线漕河渡槽伸缩缝渗漏处理方案

Leakage treatment plan for expansion joint of Caohe Aqueduct in middle route of South to North Water Transfer Project

针对漕河渡槽伸缩缝渗漏问题,探讨大型渡槽伸缩缝渗漏处理方案。对漕河渡槽伸缩缝进行更换U型止水带处理,并通过在止水带上、下表面涂刷具有很好亲和性和变形协调性的黏结材料处理基面,采用高刚度不锈钢"凵"型钢板固定止水带、止水槽丙乳砂浆封填等措施,起到拦截水流、高效防渗的目的。处理后的渡槽没有出现渗漏现象,为类似工程提供技术参考。

Aiming at leakage problem of expansion joint of Caohe Aqueduct,the leakage treatment plan for expansion joint of large aqueduct is discussed.Replacing U-type water stop for expansion joint of Caohe aqueduct,treating the base surface with adhesive material with good affinity and deformation compatibility,fixing water stop with high stiffness stainless steel plate and sealing with acrylic emulsion mortar in water stop tank are adopted to intercept water flow and prevent water effectively.The purpose of seepage.There is no leakage phenomenon in the treated aqueduct,which provides technical reference for similar projects.