本文着重讨论了我国火电200MW 机组工程,从主厂房开挖到交付安装土建工期的问题,对工期作了统计分析,并提出了保证率为90%的工期区间。围绕缩短土建工期的问题讨论了分项工程通用设计、创造土建提前开工条件和浇制、预制相结合交叉施工的方案,以及正确决策设计方案以达到缩短土建施工工期,加快工程进度的目的。 This article focuses on the discussion of the 200MW power unit project of China’s thermal power plant, from the excavation of the main powerhouse to the delivery of the civil engineering construction period. Statistical analysis was made on the duration of the project, and a duration period with a guarantee rate of 90% was proposed. Around the issue of shortening civil engineering construction period, the general design of sub-projects, creation of conditions for early construction of civil works, and the combination of pouring and prefabrication with cross construction were discussed. The correct decision-making design scheme was also adopted to shorten the construction period of civil works and speed up the progress of the project.