构皮滩拱坝放空底孔提高挡水位时结构复核研究  

Study on Structure Review of Emptying Bottom Outlet for Raising Water Retaining Level of Goupitan Arch Dam

作　　者：韦玮 夏传星 朱喜 熊堃 WEI Wei;XIA Chuanxing;ZHU Xi;XIONG Kun(Goupitan Power Plant,Guizhou Wujiang Hydropower Development Co.,Ltd.,Zunyi 564408,China;Changjiang Institute of Survey,Planning,Design and Research,Wuhan 430010,China)

机构地区：[1]贵州乌江水电开发有限责任公司构皮滩发电厂,贵州遵义564408 [2]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《人民珠江》2020年第4期81-86,共6页Pearl River

基　　金：国家重点研发计划资助(2017YFC0404906);长江设计院自主创新项目(CX2018Z06)。

摘　　要：构皮滩水库正常运行时,放空底孔由进口挡水门挡水,挡水门若需检修则要利用底孔出口的工作门挡水,该工作门及闸门支撑结构的设计挡水水位为死水位590 m。但水库实际长期在死水位以上运行,为减少挡水门检修时的弃水,需研究放空底孔工作门抬高挡水水位的可行性。采用材料力学法和三维有限元法,分别针对工作闸门、闸门支撑结构、底孔结构开展了复核研究,通过计算可知,构皮滩拱坝放空底孔具备安全拦挡595 m水位的能力,且有一定裕度。During the normal operation of Goupitan Reservoir,the emptying bottom outlet is blocked by the inlet water retaining gate,or by the working gate at the outlet of the bottom outlet if the water retaining gate needs to be repaired.The designed water retaining level of the working gate and gate support structure is 590 m of dead water level.However,the reservoir actually runs above the dead water level for a long time.In order to reduce the waste water during the maintenance of the water retaining gate,the feasibility of raising the water retaining level by working gate of the bottom outlet needs to be studied.Based on the material mechanics method and the three-dimensional finite element method,this paper reviews and studies the working gate,gate support structure,and bottom outlet structure respectively.Through calculation,it can be known that the emptying bottom outlet of the Goupitan arch dam can block the water under 595 m level safely,with certain margin.

关 键 词：高拱坝 放空底孔 工作门 结构复核 

分 类 号：TV642.4[水利工程—水利水电工程]