INSIDE xổ số hôm qua TBM TUNNELING ROBOT’S DEEP DIVE AT HANOI METRO LINE 3

As of August 25, xổ số hôm qua entire TBM, including xổ số hôm qua cutterhead and auxiliary equipment, is now fully underground. xổ số hôm qua machine has excavated approximately 100 meters, installed 7 temporary tunnel segments, and assembled 58 permanent tunnel segments.

Up-Close Look at xổ số hôm qua TBM Robot Excavating Deep Underground at Hanoi Metro Line 3 (Source: MRB-HGU-FECON)

After nearly a month of TBM operation, xổ số hôm qua tunneling process encountered challenges due to xổ số hôm qua machine drilling through stiff clay formations, requiring a reduction in speed. However, after adjusting xổ số hôm qua soil conditioning agent ratio—a substance sprayed in front of xổ số hôm qua TBM cutter head to soften xổ số hôm qua geological layer and facilitate excavation—xổ số hôm qua TBM’s tunneling speed has returned to normal at approximately 35-40 mm per minute.

As tunneling progresses, FECON simultaneously installs tunnel segments. With its advanced robotic arm, xổ số hôm qua segment installation process takes around 30 to 35 minutes for each tunnel ring, which consists of six segments. Excavated spoil generated during tunneling is collected and transported off-site.