关键词: 堆石坝, 面板裂缝, 高频振捣, 钢丝网, 防渗加固

Abstract: Atypical section design is adopted for the original dam body of Luocun concrete face rock-fill dam. After impoundment, there are many cracks on face slab. By analysis of construction quality inspection and deformation monitoring data, the main reason for cracks on the face slab is obtained. After comparison of multiple schemes, anti-seepage reinforcement by M40 high-frequency vibrating steel wire meshed cement mortar face slab is finally selected. Structure design of anti-seepage reinforcement and construction process are introduced in this paper. Results of on-site inspection, quality inspection and leakage monitoring show that seepage reinforcement is successful. No obvious cracks are found thereafter. Dam leakage significantly decreases which gets close to the new constructed dam with similar height, and the anti-seepage effect is good.

Key words: rock-fill dam, face slab crack, high frequency vibration, steel wire mesh, anti-seepage reinforcement