刘家峡水电站泄水道2^#孔检修门槽进口段磨蚀破坏修复处理的工程实践  

Practice on the repair to the erosion area at the entrance section of the emergency gate slot at No．2 opening of the sluiceway of Liujiaxia Hydropower Station

作　　者：李贵生 胡建成 鲁琦 

机构地区：[1]刘家峡水电厂,甘肃永靖731600

出　　处：《大坝与安全》2001年第3期40-44,共5页Dam & Safety

摘　　要：泄水道检修门槽进口段磨蚀破坏部位在60多m水下，要修复处理，就要制造一扇浮体闸门，将其封堵在2＃孔进水口，创造旱地施工条件；围绕浮体门的堵水工作，探索、研究、实践、创新和发明了一系列新技术：混凝土止水面水下测量技术，水封选型、试验、制造技术，浮体门沉浮技术以及浮体门下水就位技术；解决了一个又一个难题，封堵结果相当成功，创造了国内大坝深水浮体闸门封堵一次成功的奇迹。 The erosion area at the entrance section of emergency gate slot at No．2 opening of the sluiceway is 60 m deep underwater． In order to repair the damaged area a floating gate is required to be manufactured as a bulkhead gate which can be placed at No．2 opening to create the construction condition in the dry site． A lot of work has been done around the floating gate and a range of new technology are developed and created including the under－water measurement technology of concrete seal plane selection of seal type test and fabrication technology of floating gate lowered and raised and being placed under water accurately． Knotty problems have been solved one by one and the desirable result has been achieved． It creates a miracle of which floating gate in deep water blocks up successfully once in China．

关 键 词：检修门槽 磨蚀 水下修复 旱地施工 刘家峡水电站 泄水道 

分 类 号：TV738[水利工程—水利水电工程]