事故闸门是指能在动水中截断水流以便处理或遏止水道下游所发生事故的闸门。事故闸门是指能在动水中截断水流以便处理或遏止水道下游所发生事故的闸门。中孔事故闸门的布置和型式需结合工程的整体规划和水工建筑物的总体布置进行技术经济比较，其水力学性能以及门体结构动力性能，直接关系到右岸泄洪隧洞工作门及泄洪建筑物运行的技术可行性、可靠性、经济合理性和安全性。
在泄洪洞事故闸门动水下门过程中，洞内可能产生巨大的噪音和强烈的振动。
In the process of emergency gate shutting in an orifice tunnel, big noise and strong vibration would be observed within the mid gate chamber.
按重力相似准则建立了1：25溪洛渡泄洪洞模型和事故闸门水力相似模型，研究了该事故闸门动水闭门持住力和动水启门力。
Some results are as follows:(1) A 1:25 scale model was built following the gravity similarity criterion. The gate closing and opening force in hydrodynamic conditions was studied.
宝鸡峡水库是修建在多泥沙河流上的水利水电枢纽工程，工程布置采用了大底孔的方案，又设置事故检修闸门。
The Baojixia Reservoir is constructed on the river with the overload flow. The large scale bottom outlet was adopted, and the emergency overhaul gate was set.
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