摘要
在特长隧道采用直径为10.20m敞开式硬岩TBM掘进机,独头施工20 000m过程中更换主轴承存在较大的难度,且对工程施工进度有较大影响。重点介绍在III级围岩中完成新、旧主轴承的换装工艺流程与施工要点。
It is difficult to replace the main bearing in the process of 2000m one-way construction when using open hard rock TBM tunneling machine with the diameter of 10.20m in extra-long tunnel,which has a great influence on the construction progress of the project.The process flow and construction points of new and old main bearing in class III surrounding rock is elaborated.
作者
余学敏
YU Xue-min(China Railway Bureau 18th Group Co.,LTD.Tianjin 300222,China)
出处
《长江工程职业技术学院学报》
CAS
2018年第1期21-22,27,共3页
Journal of Changjiang Institute of Technology
关键词
TBM
主轴承更换
难点
施工要点
TBM
main bearing replacement
key construction points at difficult places
