the article introduces the geological conditions of covering layer of the powerhouse of the hydropower station, the technical difficulties, the main work equipments, construction technology and technical parameters. and it also analyzes and discusses the grouting problems and proposed solutions to the problems. the impervious wall made of high pressure jet grouting plays an important role in cofferdam seepage prevention of the hydropower station.%本文介绍了某水电站厂房覆盖层的地质条件、本工程高喷施工的技术难点、主要工作设备、施工工艺和技术参数,分析讨论了灌浆中出现的问题并提出了解决问题的方案。高喷灌浆建造防渗墙在某水电站厂房围堰防渗中发挥了重要作用。
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