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.
作者
杨海红
官忠瑞
邓拥军
YANG Haihong;GUAN Zhongrui;DENG Yongjun(PowerChina Kunming Engineering Corporation Limited, Kunming 650051, Yunnan,China;Huanerg Lancang River Hydropower Co . , Ltd . , Kunming 650214, Yunnan, China)
出处
《水力发电》
北大核心
2019年第6期26-30,55,共6页
Water Power
关键词
压力钢管
洞内明管
结构设计
排水设计
灌浆设计
黄登水电站
penstock
exposed pipe in the hole
structure design
drainage design
grouting design
Huangdeng Hydropower Station
