作为抽水蓄能电站下水库的已建水库大坝混凝土质量检测及其安全评价

Quality Inspection and Safety Evaluation of Concrete for Existing Reservoir Dam as Lower Reservoir of Pumped Storage Power Station

为了评价作为抽水蓄能电站下水库的已建水库大坝安全性,通过对红岩水电站大坝混凝土进行裂缝检测、溶蚀渗漏检测、水质侵蚀检测、混凝土回弹及碳化深度检测、钢筋保护层厚度检测、孔内成像以及混凝土钻孔取芯性能检测等,以评价混凝土质量。结果表明:红岩水电站大坝表面混凝土受碳化影响,存在老化现象;大坝上游面、下游面、坝顶均未发现明显的裂缝,坝体运行状态良好;红岩水电站作为贵阳抽水蓄能电站下水库是可行性的。该研究成果可为其他抽水蓄能电站利用已建水库提供参考和借鉴。

In order to evaluate the safety of the existing reservoir dam as the lower reservoir of pumped storage power station,the concrete quality of the dam of Hongyan Hydropower Station by crack detection,corrosion leakage detection,water erosion detection,concrete rebound and carbonation depth detection,steel protection layer thickness detection,hole imaging and concrete drilling core performance detection.The results show that the concrete on the dam surface of Hongyan Hydropower Station is affected by carbonization and there is aging phenomenon;No obvious cracks were found on the upstream surface,downstream surface and dam crest of the dam,and the dam body is in good operation;It is feasible to use Hongyan Hydropower Station as the lower reservoir of Guiyang Pumped Storage Power Station.The research results can provide reference for other pumped storage power stations to use existing reservoirs.