海河流域平原区水闸闸门防冰冻研究与实践

Research and Practice of Protecting Sluice Gate from Freezing in the Plain of Haihe River Basin

北方冬季河道会结冰,河道上的水闸闸门在冰压力作用下会发生变形。在冰层附近,闸门会加速锈蚀,如养护不及时,其面板甚至被锈穿。这些现象的发生,严重影响了水闸功能的发挥,威胁水闸的安全。作者在海河流域水闸设计中,为了防止静冰压力对水闸闸门的破坏,先后采用了压力水射流法、压缩空气吹泡法、保温板法等多种方法进行比较研究及实践。通过几个冬季的运行观察,压力水射流法效果最佳,建议在其它水闸工程中推广使用。

Sluice gate is generally distorted under the ice pressure in icy river of north China. The corrosion of sluice gate will accelerate, and even the steel plate of the gate will be penetrated right through around the ice layer if not maintained in time. The function and safety of the sluice will be severely affected. In the present research, methods including pressure water jet, to prevent the static ice pressure from is proved to be the best approach by project in cold regions. compressed air bubble, and heat-preservation board are tested and evaluated damaging the sluice gate in Haihe River Basin. The pressure water jet method observation through several winters, and is suggested to be applied to stuice