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

摘要： 罗村水库混凝土面板堆石坝原坝体采用非典型断面设计，运行后面板出现众多裂缝。分析施工质量检测结果与变形监测资料，得出面板产生较多裂缝的主要原因。选择确定M40高频振捣钢丝网水泥砂浆面板防渗加固方案。介绍了防渗加固结构设计及施工工艺措施。现场检查、质量检测、渗流量监测成果分析表明：防渗加固成功，处理后多次检查未发现明显裂缝，大坝渗流量降幅明显，且接近国内坝高相近的新建工程，防渗效果良好。

关键词: 堆石坝, 面板裂缝, 高频振捣, 钢丝网, 防渗加固