防水节点处理是保证地下工程混凝土质量的关键所在。本文介绍了地下工程混凝土施工过程中应急施工缝设置、后浇带膨胀混凝土的配制及限制膨胀率现场测量两个注意事项,并有针对性的给出应急解决方案,有效提高了地下工程防水质量,保障了地下工程正常使用。 Waterproof node processing is to ensure the quality of underground engineering, the key to the concrete. This article introduces the construction of underground engineering in the construction of emergency joints, the preparation of post-pouring with expansion concrete expansion and on-site measurement of the two considerations, and give a targeted emergency solutions to effectively improve the quality of underground waterproofing , To protect the normal use of underground works.