钻挖
- 网络Tunnel Boring Machine

钻挖
Tunnel Boring Machine
...道时会使用钻爆(Drill and blast)、钻挖(Tunnel Boring Machine)及明挖随填(Cut-and-cover)三种不同方法;建造竖井、紧急救 …
1
2
3
4
7
8
9