古水水电站放空冲沙洞掺气减蚀研究  

Study on Aeration and Erosion Reduction of Drainage Sand-scouring Tunnel in Gushui Hydropower Station

作　　者：郑大伟 冯业林 ZHENG Da-wei;FENG Ye-lin(Kunming Engineering Corporation Limited,Kunming 650051,Yunnan;Yunnan water conservancy and hydropower embankment dam engineering technology research center,Kunming 650051,Yunnan)

机构地区：[1]中国电建集团昆明勘测设计研究院有限公司,云南昆明650051 [2]云南省水利水电土石坝工程技术研究中心,云南昆明650051

出　　处：《云南水力发电》2019年第5期40-43,共4页Yunnan Water Power

摘　　要：高水头大泄量泄洪隧洞常因空蚀而遭到破坏,古水水电站放空冲沙洞最大水头175.4m,最大泄量2 100m^3/s,且隧洞布置受下游滑坡堆积体影响,隧洞长度较长,底坡较小,掺气难度较大。对古水水电站放空冲沙洞掺气设施设计及模型试验、抗冲耐磨混凝土材料、过流面不平整度控制进行介绍。High head and large discharge tunnel is often destroyed by cavitation erosion. Gushui Hydropower Station empties sand-washing tunnel with maximum head of 175.4 m and maximum discharge of 2100 m^3/s. The tunnel layout is affected by downstream landslide accumulation. The tunnel length is longer, the bottom slope is smaller, and aeration is more difficult. This paper introduces the design and model test of aeration facilities, erosion-resistant and wearresistant concrete materials, and the control of irregularity of flow surface of Gushui Hydropower Station.

关 键 词：空化空蚀 突扩突跌 小底坡掺气 抗冲耐磨混凝土 不平整度控制 

分 类 号：TV131.32[水利工程—水力学及河流动力学]