某混凝土面板堆石坝坝基帷幕灌浆施工技术

Construction Technology of Curtain Grouting for the Foundation of a Concrete Faced Rockfill Dam

混凝土面板堆石坝坝基帷幕灌浆工程,对水库枢纽防渗安全稳定具有重要的工程意义。为此,结合某混凝土面板堆石坝大坝坝基帷幕灌浆施工技术实践展开分析研究。结果表明,了解大坝坝基帷幕灌浆工程概况,明确坝基帷幕灌浆钻孔次序及灌浆法,科学实施帷幕灌浆施工技术(主要包括钻孔、钻孔及裂隙冲洗和压水试验、帷幕灌浆试验内容、灌浆记录与监控、浆液拌制和灌浆施工技术等内容),同时规范处理施工各种特殊情况,加强灌浆物探测试及质量检查,最终确保坝基帷幕灌浆施工技术应用科学规范、施工质量优良。可为类似水库枢纽工程坝基帷幕灌浆施工提供借鉴参考。

The curtain grouting project for the foundation of a concrete faced rockill dam has important engineering significance for the safety and stability of anti-seepage in the reservoir hub.Therefore,analysis and research are conducted based on the practical construction technology of curtain grouting for the foundation of a concrete faced rockfll dam.The results indicate that understanding the overview of the dam foundation curtain grouting project,clarifying the drilling sequence and grouting method of the dam foundation curtain grouting,scientifically implementing the curtain grouting construction technology(mainly including drilling,drilling and crack flushing and water pressure test,curtain grouting test content,grouting records and monitoring,slurry mixing and grouting construction technology,etc.),and standardizing the handling of various special construction situations,strengthening grouting geophysical testing and quality inspection,Ultimately,ensuring the scientific and standardized application of dam foundation curtain grouting construction technology and excellent construction quality.This can provide reference for the curtain grouting construction of dam foundation in similar reservoir hub projects.