罗村水库混凝土面板堆石坝面板裂缝成因及加固处理措施  

Causes of cracks on face slab and its reinforcement treatment for Luocun concrete face rock-fill dam

作　　者：葛龙进 史明华 杜斌 张惠英 GE Long-jin;SHI Ming-hua;DU Bin;ZHANG Hui-ying(Zhejiang Design Institute of Wa?ter Conservancy & Hydro-Electric Power)

机构地区：[1]浙江省水利水电勘测设计院

出　　处：《大坝与安全》2019年第2期69-73,共5页Dam & Safety

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。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.

关 键 词：堆石坝 面板裂缝 高频振捣 钢丝网 防渗加固 

分 类 号：TV641.2[水利工程—水利水电工程]