随着水电开发向西南山区转移,在深厚砂砾石地层上建坝越来越多,需要防渗处理的难度越来越大,也越来越复杂,因此深厚砂砾石层防渗帷幕灌浆施工技术的研究具有重要意义。文章分析了深厚砂砾石层帷幕灌浆施工技术的难点,介绍了帷幕灌浆施工技术在造孔、灌浆、质量检查等方面的进展。 With the hydropower development shifting to the mountainous areas in southwest China, more and more dams are being built on the deep gravel stratum, the seepage control is more and more difficult and more complicated. Therefore, the construction technology of impervious curtain grouting in deep gravel layer Research is of great significance. The paper analyzes the difficulties of the curtain grouting construction technology of deep sand and gravel layer and introduces the progress of the curtain grouting construction technology in the aspects of hole making, grouting and quality inspection.