针对盾构隧道大体积管片施工技术的重、难点，结合武汉长江隧道盾构管片施工过程中的实际经验，介绍了盾构大体积管片施工过程中不同裂纹类型、形成原因及控制重、难点，对关键工序及关键工艺进行重点介绍，并简要介绍了常见问题及其对策和预防措施。

On basis of the experience in the prefabrication of the largescale segments for the shielddriven Wuhan Yangtze River crossing tunnel, the paper presents the types of the cracks of the largescale segments, as well as the causes and countermeasures for the cracks. The paper places its emphasis on the description of the key technologies and critical technical processes of the prefabrication of the segments. The paper also presents the problems frequently encountered during the prefabrication of the segments and their prevention measures.