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斗门在渠道上虽是一个很小的附属建筑物,但是在水利灌溉工程中占有很重要的地位。如果这群小放水结构在运行中起不到止水和控制流量的作用,不仅容易浪费水量,更重要的是当灌区需要大量水时,将会给渠道的调度和管理工作带来困难。因此,如何解决放水斗门的结构形式,是水利渠道防渗设计工作中值得研究的一个技术问题。这里拟以合面狮渠道工程为例,简单介绍活塞闸在渠道斗门上的应用。合面狮渠道工程于1975年建成,东干渠长45公里,设计流量5立方米/秒,西干渠长68公里,设计流量9立方米/秒,共有斗门近100座。施工时因设备、材料不足,未能
Doumen in the channel though it is a small subsidiary buildings, but in irrigation works occupy a very important position. If these groups of water drainage structures can not stop water and control the flow of water during operation, it is not only easy to waste water but more importantly, when the irrigation area needs a lot of water, it will cause difficulties in channel scheduling and management. Therefore, how to solve the structural form of the drainage gate is a technical problem deserving to be studied in the seepage prevention design of water conservancy canal. Here to meet Lion Channel project, for example, a brief introduction of the piston gate in the channel Doumen application. The cooperative Lion Channel project was completed in 1975. The East Main Canal is 45 km long. The designed flow rate is 5 cubic meters per second. The West Main Canal is 68 kilometers long. The designed flow rate is 9 cubic meters per second. There are about 100 Doumen gates. Construction due to equipment, lack of material, failed