黄登水电站压力钢管设计
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摘要
黄登水电站压力管道为地下埋藏式,为巨型压力管道。考虑进水口布置和坝肩边坡开挖影响,以及地质条件、施工便利及施工保障可靠性等综合因素,通过多方案比较,压力钢管结构设计采用洞内明管方式设计,同时对压力钢管抗外压稳定进行复核。此外,根据压力钢管水文地质条件,压力钢管外回填混凝土与围岩之间、回填混凝土与钢管之间均设有排水系统,以确保压力钢管检修工况稳定运行。同时对钢管外进行回填灌浆、无盖重固结灌浆和帷幕灌浆设计。实际运行表明压力钢管运行状况良好。
The penstocks of Huangdeng Hydropower Station are buried underground and are giant pressure pipeline.Considering the influences of intake layout and dam abutment slope excavation, as well as other factors such as geological conditions, construction convenience and construction support reliability, the penstocks are designed as exposed-tube mode inside the hole through the comparison of multiple schemes, and the resistance capacity to external pressure stability are reviewed. In addition, according to the hydrogeological conditions, the drainage systems are set between the backfilled concrete outside the penstock and the surrounding rock, and between the backfilled concrete and the penstock respectively to ensure the stable operation under maintenance condition of penstock. The backfilling grouting, reconsolidation grouting without cover and curtain grouting are also designed. The actual operation shows that the penstocks are in good condition.
The penstocks of Huangdeng Hydropower Station are buried underground and are giant pressure pipeline.Considering the influences of intake layout and dam abutment slope excavation, as well as other factors such as geological conditions, construction convenience and construction support reliability, the penstocks are designed as exposed-tube mode inside the hole through the comparison of multiple schemes, and the resistance capacity to external pressure stability are reviewed. In addition, according to the hydrogeological conditions, the drainage systems are set between the backfilled concrete outside the penstock and the surrounding rock, and between the backfilled concrete and the penstock respectively to ensure the stable operation under maintenance condition of penstock. The backfilling grouting, reconsolidation grouting without cover and curtain grouting are also designed. The actual operation shows that the penstocks are in good condition.
引文
[1] DL/T 5141—2001水电站压力钢管设计规范[S].
[2]潘家铮.压力钢管[M].北京:电力工业出版社,1992.
[3]马善定,伍鹤皋,秦继章,等.水电站压力钢管[M].武汉:湖北科学技术出版社,2002.
[4]万文强,杨佳奇,叶永.引水式水电站压力管道设计探讨[J].水利科技与经济,2018,24(12):64-68.
[5]胡蕾,伍鹤皋,苏凯.全埋式钢衬钢筋混凝土管道与坝内垫层管比较分析[J].武汉大学学报:工学版,2012,45(1):54-58.
[6]苟芳蓉,杨怀德,邱云.溪洛渡水电站压力管道灌浆设计[C]//水电站压力管道第八届全国水电站压力管道学术论文集.北京:中国水利水电出版社,2014:3-10.
[7]伍鹤皋,周彩荣,付山,等,埋藏式压力钢管加劲环抗外压稳定分析方法探讨[J].水力发电学报,2015,34(12):19-23.
[2]潘家铮.压力钢管[M].北京:电力工业出版社,1992.
[3]马善定,伍鹤皋,秦继章,等.水电站压力钢管[M].武汉:湖北科学技术出版社,2002.
[4]万文强,杨佳奇,叶永.引水式水电站压力管道设计探讨[J].水利科技与经济,2018,24(12):64-68.
[5]胡蕾,伍鹤皋,苏凯.全埋式钢衬钢筋混凝土管道与坝内垫层管比较分析[J].武汉大学学报:工学版,2012,45(1):54-58.
[6]苟芳蓉,杨怀德,邱云.溪洛渡水电站压力管道灌浆设计[C]//水电站压力管道第八届全国水电站压力管道学术论文集.北京:中国水利水电出版社,2014:3-10.
[7]伍鹤皋,周彩荣,付山,等,埋藏式压力钢管加劲环抗外压稳定分析方法探讨[J].水力发电学报,2015,34(12):19-23.