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丹江口水利枢纽泄洪深孔为我国首次设计、施工的无门槽的压力短管深孔,检修事故闸门利用反钩导向,从根本上避免了有门槽的种种弊病,管道和溢流表面均未出现明显气蚀。通过近二十年的运行证明,此泄洪建筑物的选型合理,布置紧凑且水力特性良好,启闭灵活、调洪可靠,其经验可在类似工程的设计、施工中推广。对于有压段未设通气孔和采用高强砂浆抹面的混凝土胸墙等方面有明显不足,应在以后的设计、施工中引以为鉴。本文还指出了丹江口深孔运行中应注意的有关问题,供今后安全运行参考。
Deep-hole drainage of Danjiangkou Hydropower Project is the first non-groove pressure short tube deep hole designed and constructed in our country, and the anti-gate of maintenance accident gate is used to fundamentally avoid the drawbacks of having gate grooves. None of the pipes and overflow surfaces Appear obvious cavitation. After nearly 20 years of operation, it has been proved that this flood discharging building has a reasonable selection, compact layout, good hydraulic characteristics, flexible opening and closing and reliable flood control. Its experience can be popularized in the design and construction of similar projects. There are obvious shortcomings in the pressure wall has not set vent holes and the use of high-strength mortar plaster walls, etc., should be in the future design, construction, learn from it. This article also pointed out the Danjiangkou deep hole operation should pay attention to the relevant issues for future safe operation reference.