本文从原理、施工做法和经济性分析等角度介绍了化学预应力混凝土、后浇带超前止水技术、取消上翻导墙和塔吊基础处理等四种地下工程防水新技术。新技术的推广有助于提高地下防水工程的施工技术水平,保证工程防水质量,加快施工进度,降低工程造价。 In this paper, four kinds of underground engineering waterproofing technologies, such as chemical prestressed concrete, post-pouring zone advanced sealing technology, and the elimination of upper guide wall and tower crane foundation treatment, are introduced from the aspects of principles, construction practices and economic analysis. The promotion of new technologies will help to improve the construction technology of underground waterproofing projects, ensure the waterproof quality of projects, accelerate the construction progress and reduce the construction cost.