通过隧洞，主要用于泄放洪水的泄水建筑物。其孔口位置可为表孔、中孔或深孔。根据其布置和隧洞内水流特点，可分为无压、有压及混合型3种类型，其建筑物由上游引水段、控制段、隧洞泄流段、消能工及下游退水渠组成，图示为表孔泄洪隧洞。
... sluice tunnel 泄洪隧洞，冲沙隧洞，排沙隧洞 spillway tunnel 泄洪隧洞 subaqueous tunnel 水下隧洞 ...
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... 泄洪量 flood discharge 泄洪隧洞 flood-discharge tunnel 泄降曲线 drop-down curve ...
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The adverse 3-D spatial stress distribution in the intersection of diversion tunnel and spillway tunnel at the bottom of plug is adequately considered in calculation, the length and shape of plug is checked and the optimized proposal is put forward.
计算中充分考虑堵头末端位于导流隧洞与泄洪隧洞交叉的不利三维空间分布情况，复核堵头的长度及体型，并提出优化意见。
参考来源 - 紫坪铺水利枢纽导流洞堵头及围岩稳定性三维有限元计算分析·2,447,543篇论文数据，部分数据来源于NoteExpress
洪家渡水电站泄洪隧洞的设计优化，经多种设计方案的比较论证，优选出适宜于该洞自然条件和运行要求的方案三。
There are two methods namely flood discharge tunnel and spillway selected and compared for flood discharge structure of the Hengquan Reservoir Project.
普通城门洞形过水断面是泄洪隧洞和灌溉引水隧洞较常采用的断面形式之一，其水力计算中的正常水深求解无显函数形式的表达公式。
The arched section is one of the usually adoptive section shapes in flood discharge tunnels and irrigation tunnels, but the analytic expression of normal water depth for this section is not explicit.
主要介绍山西省汾河水库泄洪隧洞F3断层塌方冒顶的处理情况，并分析了塌方冒顶的原因，总结了经验教训，为同类工程塌方的预防和处理提供了有益的经验。
Treatment for rockfall of F3 fault in spillway tunnel at Fenhe Reservoir is introduced and Cause of collapse is analyzed . Experience is gained for the similar project.
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