高喷灌浆、静压灌浆、混凝土防渗墙是比较成熟的土石围堰防渗施工方法,但在块石架空严重地层围堰和较短的施工工期的防渗工程中,其应用范围受到一定的限制。本文研究了膏浆(速凝膏浆)材料的性质、施工工艺以及其号常规防渗技术的比较,为在块石架空地层围堰进行防渗施工提供一种有效、经济的施工技术。 High jet grouting, static pressure grouting and concrete cutoff wall are relatively mature seepage control methods for earth rock cofferdam. However, in the seepage control project with serious strata cofferdam and short construction period, the scope of application is limited limits. In this paper, the properties of plaster (quick setting plaster) material, construction technology and comparison of its conventional seepage control technology are studied to provide an effective and economical construction technology for impermeable construction of cofferdam in block stratum.