Thursday, September 22, 2011
BREAKING NEWS -- TBM Breaks Through
Second Avenue Subway TBM Drills Through Wall
into Lexington Avenue/63rd Street Station
Moments ago, at 11:28 a.m., the tunnel boring machine that had been mining the east tunnel of the Second Avenue Subway reached its final destination. It successfully broke through a rock cavern wall, into open air, deep inside the Lexington Avenue/63rd Street station.
Here you can see the rear wall being watered down, to minimize airborne particles in anticipation of the imminent breakthrough of the TBM.
As the machine's cutterhead broke through the rock cavern wall the assembled crowd cheered loudly to celebrate the momentous occasion.
I was fortunate to witness this historic event -- more than 80 years in the making. A full report, with plenty of pictures, will be posted this evening. Stay tuned.
A full report from the TBM Breakthrough event
can be found on this link:
Subway Infrastructure Milestone Achieved
The Launch Box
Posted by The Launch Box on 9/22/2011 11:55:00 AM