It is the first time I saw the drill placed into the tube.
Reference:
Bored piles : http://www.cse.polyu.edu.hk/~ctbridge/case/bored_kt.htm
The crane was moving forward .......
........ What did it want to do? .............
.......... the pulley was lifted ...........
.......... did it want to lift something up from this tube .............
........ another crane was being assembled ...........
.......... the pulley was ging down ..........
............. Oh! I see. It was going to deliver this drill .............
... the conection of the drill and the wire at crane was going on ...
..... on .......
.... on .....
.......... and on .........
It is the close up of the drill
finally the connection was done.
It stood up ...............
............... It was ready to go ...........
........... going on and on ......
...........where didi it go? ..........
............... so many tubes, ........... which one?..........................
Here it is. The driving machine was tilted in order to let the drill going inside the tube .....
...... Stand by ....... Go! .........
P.S.
你影的是 "Bored pile" 的建造過程