2/2 沈箱工程? Nov. 2008

" No. It is Bored piles construction." Blogger 炭燒 says. Thanks! 炭燒 .
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

.......... It was ready to install the drill .........

Another crane was placing a working platform on top of a tube.

I was waiting to see the installation of the drill

...... waiting ......

a close up

another drilling machine was working.

There was a drill in front of the drilling machine.

......... waiting ...........

.......... waiting .......

at last, the drill was on top of the tube

......... going down ............

.......... down ........

.......... down .......

........... and down ..............

........ then a platform was placed on top of the tube ............

......... workers were going to detached the drill from the wire of the crane .

I did not have time to wait for the action of the drilling machine connected to the drill.