三峡工程建筑物设计关键技术问题研究与实践

针对三峡水利枢纽拦河大坝泄洪流量大、孔口多、泄洪消能结构复杂，岸坡厂房坝段基岩长大缓倾角结构面因坝后厂房深挖临空危及坝基稳定，坝体混凝土耐久性要求高且温控防裂困难；茅坪溪防护土石坝沥青混凝土心墙设计施工尚缺乏实践经验；电站运行水头高、变幅大，引水压力管道及进水口选型和蜗壳埋设方式技术复杂，地下电站采用变顶高尾水洞替代常规的尾水调压室；双线五级船闸运行水头高、输水水力条件复杂，且在山体深挖岩槽中修建，全衬砌船闸结构、高水头输水系统和大型人字闸门及启闭机设计难度大等关键技术问题，文章重点介绍了各建筑物设计研究解决问题的途径、采用的优选方案及技术措施和通过实践检验的创新成果。...

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Bibliographic Details
Published in中国工程科学 Vol. 13; no. 7; pp. 20 - 27
Main Author 郑守仁 钮新强
Format Journal Article
LanguageChinese
Published 中国工程院战略咨询中心 01.07.2011
高等教育出版社有限公司
长江水利委员会,武汉,430010%长江水利委员会长江勘测规划设计研究院,武汉,430010
Subjects
三峡工程
关键技术
实践
建筑物
设计
关键技术
建筑物
设计
实践
三峡工程
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Summary:针对三峡水利枢纽拦河大坝泄洪流量大、孔口多、泄洪消能结构复杂，岸坡厂房坝段基岩长大缓倾角结构面因坝后厂房深挖临空危及坝基稳定，坝体混凝土耐久性要求高且温控防裂困难；茅坪溪防护土石坝沥青混凝土心墙设计施工尚缺乏实践经验；电站运行水头高、变幅大，引水压力管道及进水口选型和蜗壳埋设方式技术复杂，地下电站采用变顶高尾水洞替代常规的尾水调压室；双线五级船闸运行水头高、输水水力条件复杂，且在山体深挖岩槽中修建，全衬砌船闸结构、高水头输水系统和大型人字闸门及启闭机设计难度大等关键技术问题，文章重点介绍了各建筑物设计研究解决问题的途径、采用的优选方案及技术措施和通过实践检验的创新成果。
Bibliography:11-4421/G3
Three Gorges Project ; structure ; design ; key techniques ; practice
The dam of Three Gorges Project is characterized by large flood discharge capacity, more outlets dam-toe. For the dam body concrete, the durability requirement is high as well as the temperature control and crack prevention are difficult. There is a lack of practical experiences in the design and construction of asphalt concrete core wall for Maopingxi protective earth-rock dam. The power station operates with high water head and large head variation. The type selection of penstock and intake as well as the embedding way of spiral case are complicated in technique, and the tailrace tunnel with sloping ceiling of underground power plant is arranged instead of traditional tailrace surge tank. For the double-line five-step ship-lock, the design of fully lined ship-lock, high head delivery system and large-sized miter gates and hoists is very difficult due to high operation head, complicated delivery conditions and building in deep exc
ISSN:1009-1742
2096-0034
DOI:10.3969/j.issn.1009-1742.2011.07.004