Abstract: To ensure the flood discharge capacity, double orifices radial gates are adopted at the outlet of flood discharge and diversion tunnel of Xianlin reservoir. Hydraulic model test is used to verify the discharge capacity under the conditions of single orifice open and double orifices open with different water levels at flood discharge and diversion tunnel. As well, the design of energy dissipation and antiscour structure is analyzed. The test result shows that adoption of double orifices radial gates can meet the requirements of discharge capacity, and the energy dissipation effect and flow pattern are satisfactory.

Key words: double orifices radial gates, stilling basin, hydraulic model test

摘要： 闲林水库泄洪兼导流洞出口采用双孔弧门结构保证泄洪能力。通过水工模型试验，对泄洪兼导流洞在不同水位下单孔、双孔开启的泄流能力进行了验证，并对消能防冲结构设计进行了分析。试验表明，出口双孔弧门结构可满足泄流能力要求，消能防冲建筑物在消能效果和水流流态上都达到了令人满意的效果。

关键词: 双孔弧形闸门, 消力池, 水工模型试验