观音岩水电站廊道混凝土缺陷处理技术

Construction technology of concrete defect treatment for gallery of Guanyinyan Hydropower Station

观音岩水电站EL.985灌浆廊道埋深在地下水位以下,大坝蓄水后发现灌浆廊道混凝土存在裂缝渗漏水现象。针对观音岩水电站灌浆廊道混凝土缺陷类型进行详细划分,并总结各种类型缺陷处理的施工材料、施工工艺、特殊情况处理等技术指标。

The EL.985 grouting gallery of Guanyinyan Hydropower Station is below the groundwater level.Concrete cracks and water leakage was found in the gallery after impoundment.The types of concrete defects were classified in detail,and the technology of defect treatment was summarized in respects of construction materials,technique,treatment for special cases etc.