大岗山水电站泄洪洞泄洪雾化观测成果分析

Analysis of the Observation Results of Flood Discharge Atomization at the Flood Discharge Tunnel of the Dagangshan Hydropower Station

巨型电站高坝工程泄洪形成的泄洪雾化现象对水利枢纽的正常运行、交通安全、周围环境甚至下游岸坡稳定均可能造成危害。运行实践表明,大型水电工程的泄洪雾化,由于降雨强度及其影响范围相当大,与常规的自然降雨相比对水利枢纽附属建筑物和下游岸坡所造成的威胁、破坏要大得多,泄洪雾化作为环境问题受到了社会各方面的极大关注。通过大岗山水电站泄洪洞雾化原型观测,提出合理的安全调度运行方式,确保泄水建筑物运行的合理性、可靠性和安全性,为泄水建筑物的合理调度以及验证工程设计的正确性、合理性提供了依据。

The flood discharge atomization occurs at large-scale hydropower station during the flood discharge of the high dam may cause harm to the normal operation of the hydraulic complex, traffic safety, the surrounding environment and even the stability of the downstream bank slope. The operation practice shows that the flood discharge atomization of large-scale hydropower station causes intense rainfall and impacts a large area, and the threats and damages caused to the affiliated buildings of hydraulic complex and the downstream bank slopes are much more severe than the conventional natural rainfall. Flood discharge atomization has received great attention from all aspects of society as an environmental issue. Through the atomization prototype observation of the discharge tunnel of the Dagangshan Hydropower Station, a reasonable safe scheduled operation mode is proposed to ensure the operating rationality, reliability and safety of the flood discharge structure, providing the basis for the reasonable scheduling of the flood discharge structure and the engineering verification of design validity and rationality.