摘要
简要论述泽雅水库面板堆石坝坝基处理和防渗的原则及设计要点 .趾板基础和堆石体各区砂砾石基础开挖 ,除趾板与其下游 1/ 9底宽范围以及坝脚挖除冲积层至弱风化 (局部微风化 )基岩外 ,其余部分均予以保留 .断层破碎带处理 ,趾板部位采用混凝土塞 ,其它部位采用半透水料置换 ,并根据本工程特点在下游坝脚加设了反滤层 .为提高坝基的整体性和防渗性能 ,对趾板进行了固结和帷幕灌浆 .达到了安全、经济、便于施工的目的 ,运行情况良好 。
A brief introduction is given to the treatment of the Zeya dam foundation,principles of seepage control and design of the concrete face rockfill dam of the Zeya reservoir.As for the excavation of the sand gravel zones,except the toe slab and its 1/9 bottom width down stream,the alluvial layers are excavated to the micro weathered rocks,while the other sections remain unexcavated.Regarding to the treatment of the fracture zones,concrete filling is used for the toe slabs and semi permeable materials are used for other section.According to the construction characteristics,a filter is placed in the down stream embankment foot.To improve the integrity of the dam foundation and anti seepage capability consolidation grouting and curtain grouting are adopted.As a result safety,economic benefit,convenience in construction and good performace are achieved.
出处
《水利水电科技进展》
CSCD
2000年第2期47-49,58,共4页
Advances in Science and Technology of Water Resources
关键词
面板堆石坝
坝基处理
防渗
concrete face rockfill dam
dam foundation
treatment
seepage prevention
