Abstract: Discharge structure has been damaged seriously suffering abrasion of high-speed flow with sand at long time since it has put into operation for 30 years. Some measures have been taken to repair it, including epoxy mortar floating on channel body, treatment of zinc spraying and anti-erosion for gate. The measures to be taken under water are constructed in the dry and submarine work. It also optimized on gate open styles and achieved a good effect.?

摘要： 刘家峡水电站运行已30多年，泄水建筑物长期经受高速水流挟带泥沙的磨蚀，破坏严重。补强加固措施有：渠身洞身抹环氧砂浆、原钢衬板表面贴新钢板塞焊加固、闸门进行修复喷锌防腐处理、水下施工采用旱地施工方法或潜水施工方法；并对闸门开启方式进行优化，取得了良好的效果。