三河闸伸缩缝防渗处理效果分析

Analysis of the effect of anti-seepage treatment of expansion joints in Sanhe Sluice

三河闸是淮河入江水道的控制口门,经过多年运行,多处闸墩伸缩缝位置出现渗漏,影响工程运行安全。通过分析三河闸伸缩缝观测资料,研究伸缩缝变形与闸墩渗漏问题之间的关系,结合现场条件,提出在伸缩缝中部钻孔及灌注水溶性聚氨酯浆液的防渗处理方案。经灌浆防渗处理后,三河闸闸墩渗漏问题得以解决,可为类似大型水闸的伸缩缝检查观测及防渗处理提供借鉴。

The Sanhe Sluice,as the control gate of channel for the Huaihe River to the Changjiang River.After many years of operation,leakage occurred at many gate pier expansion joints,affecting the safety of project operation.By analyzing the observation data of the expansion joint of Sanhe Sluice,the relationship between the deformation of the expansion joint and the leakage of the gate pier is studied.According to the site conditions,the anti-seepage treatment scheme of drilling holes in the middle of the expansion joint and filling with water-soluble polyurethane grouting fluid is proposed.After grouting and anti-seepage treatment,the leakage problem of Sanhe Sluice pier has been solved thoroughly.It can provide reference for the inspection and observation of expansion joints and seepage prevention treatment of similar large sluices.