摘要
TB880E型掘进机在秦岭隧道南口的掘进中,其盘形滚刀首先发生刀圈挡圈脱落,严重影响施工的顺利进行,文章分析了挡圈脱落的原因和对挡圈的改进,为盘形滚刀的使用和改进设计提供了参考。
The drop of disc cutter ring happened during the excavation of southern section of Qinling tunnel by TB880E TBM and it seriously affected smooth construction. This paper analyses the reason of dropping and ring improvement measures. It can be taken as a reference for the use of disc cutter and design improvement.
