摘要
汾河二库大坝坝基节理发育,断层、破碎带多,岩溶较为发育。大坝帷幕灌浆主要采用小口径钻孔,孔口封闭,自上而下分段施工,孔内循环的灌浆方案,钻孔保证孔向准确,偏差不超过规范规定的值,在灌浆之前进行钻孔冲洗和压水试验,灌浆自上而下分段进行,每段5m ,浆液由稀至浓。检查钻孔压水试验及单位耗灰量分析,灌浆达到设计要求。
The scheme of curtain grouting under dam of Fenhe Reservoir Ⅱ is such a scheme that holing in small diameter,closing in hole mouth,and stage descending grouting from top to bottom.In this paper,the design of curtain and construction of curtain grouting,and the analysis of the effect of the curtain grouting by water pressure test,the calculation of the grout consumption and drainage in foundation pit are introduced.The analysis result shows that the curtain grouting of Fenhe Reservoir Ⅱ is of good quality.
出处
《山西水利科技》
1999年第4期28-29,共2页
Shanxi Hydrotechnics
