闸门止水是指在闸门门叶与门槽间或分段门叶两段间用于封闭缝隙的防渗漏装置，又称水封。它的作用是阻止渗漏和喷射，高水头闸门的渗漏或喷射的水流会引发闸门振动或使止水座空蚀。
简介了广东连江梯级闸门止水由传统的木、橡胶止水改为钢止水的过程。
Steel sealing strips were introduced to the lock gates in the canalized water-way of Lianjiang River in Guangdong Province instead of the traditional woo-den or rubber strips.
在小开度、淹没出流情况下，如果止水橡胶损坏，水和闸门的相互作用将导致闸门产生破坏性的振动。
In the case of small opening, submerged discharge, and water-stop rubber damage, the interaction between water and gate may cause vibration which result in gate damage.
高水头弧形闸门的充压伸缩式止水已在若干工程得到成功应用，但由于高寒地区低温环境的特殊性，使其应用受到限制。
It has been used successfully in many projects to choose the pressure-filled telescopic water stop type for high head redial gates.
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