关键词: 坝基固结灌浆, 岩石盖重灌浆, 无盖重灌浆, 混凝土盖重引管灌浆, 白鹤滩水电站

Abstract: Baihetan hydropower dam is the first super-high arch dam based on columnar jointed basalt worldwide. To be stable and safe, considering the exposure of dam foundation rock mass, the location of foundation surface and the progress of concrete pouring and other influencing factors, it is proposed that non cover weight grouting, non cover weight grouting combined with concrete cover weight guide pipe grouting and reserved protective layer rock cover weight grouting combined with concrete cover weight guide pipe grouting should be adopted for consolidation grouting of dam foundation of Baihetan hydropower station. The results of acoustic wave inspection show that the wave velocity in rock mass in each dam section after grouting is higher than before, which indicates that the three grouting methods mentioned above are feasible for consolidation grouting of dam foundation of Baihetan hydropower station.

Key words: dam foundation consolidation grouting, rock cover weight grouting, non cover weight grouting, concrete cover weight guide pipe grouting, Baihetan hydropower station