龙抬头式泄洪洞体型设计与泄洪消能问题研究

Study on Problems about Figure Design of Energy Dissipator and Flood Discharge and Energy Dissipation for Dragon Head Type Spillway Tunnel

结合某枢纽工程龙抬头式泄洪洞(由导流洞改建)渥奇曲线段体型设计与出口泄洪消能问题,以及对收集到的国内已建龙抬头式泄洪洞工程实例进行综合分析,认为该工程龙抬头渥奇曲线段体型设计合理,满足防蚀要求。同时通过试验研究提出了一种结构简单、施工方便的综合式消能工,从而较圆满的解决了该工程导泄"二合一"隧洞出口消能工体型选择及泄洪消能问题。

Combined with the problems about the figure design in Warton＇ s curve segment and the flood discharge and energy dissipation in the outlet of the dragon head type spillway tunnel （rebuilt from a diversion tunnel） in a hydro project, and based on the comprehensive analysis for the existing similar engineering cases built in China, it can be defined that the figure design of the energy dissipator in such the project as mentioned above is reasonable, and is able to meet the requirments of corrosion protection. Simultaneously, a composite energy dissipator which is simple in structure and convenient in construction is proposed by experimental studies, thereby, the problems about the figure selection of energy dissipator and the flood discharge and energy dissipation in the outlet of the ＂two combining into one＂ spillway tunnel combined diversion with discharge in this project could be solved satisfactorily.