关键词: 运行损伤, 混凝土修复, 水电站, 泄洪洞

Abstract:

Under the joint effect of flood discharge and storage, the concrete of partial pressure section on left bank spillway tunnel of a hydropower station was damaged, which might affect the normal operation. On the basis of analyzing the difficulties of repair works, a series of reasonable, effective and innovative construction methods were introduced through summarizing the concrete repair technique under the harsh conditions of large water seepage and small construction space. Relevant experience can be used for reference in emergency rescue work in future.

Key words: operational damage, concrete repair, Hydropower Station, spillway tunnel