Home / Standards / GB/T 41053-2021 GB/T 41053-2021 Active Full face tunnel boring machine—Dual modes (earth pressure balanced and slurry balanced) tunnel boring machine 全断面隧道掘进机 土压平衡-泥水平衡双模式掘进机 Standard Type GBT ICS 91.220 CCS P97 Status 现行 Issue Date 2021-12-31 Implementation 2022-07-01 Responsible Dept 中国机械工业联合会 Drafting Unit N/A