基于原型观测成果的泄洪洞初期运行情况及评价

Initial Operation and Evaluation of Flood Discharge Tunnel Based on Prototype Observation Results

某水电站泄洪洞自2017年7月参与水库泄洪以来,经历了2个汛期,累计泄洪历时逾4000h,其初期运行工作性态对验证建筑物是否满足设计要求及指导后期运行具有重要意义。结合汛后检查、水力学原型观测和重要结构监测数据对泄洪洞初期运行情况进行了分析评价。综合分析认为,泄洪洞经过2a汛期过流考验,其流态、水力特性、消能效果总体较好,运行正常。

Since being used for reservoir flood discharge in July 2017, the flood discharge tunnel of a hydropower station has experienced two flood seasons. The accumulated flood discharge has lasted more than 4 000 h. Its initial operational performance is important for guiding the later operation and verifying whether the structure meets the design requirements. Combined with post-flood inspection, hydraulic prototype observation and important structural monitoring data, the initial operation of the flood discharge tunnel was analyzed and evaluated. According to the comprehensive analysis, the flood discharge tunnel has passed the 2 a flood season discharge test, and its flow pattern, hydraulic characteristics and energy dissipation effect are generally favorable and the operation is normal.