Thursday, 11 September 2014

Lentor Drive Diverts

Much changes have taken place at the Lentor site throughout the 3rd quarter. The junction between Yio Chu Kang and Ang Mo Kio Avenue 4 has been diverted to accommodate the road diversion at Lentor Drive, which has been re-routed to skit around the proposed station box. 3 crawler cranes and a hydraulic grab machine is currently on the site.

Mentioned in the Springleaf update, a hydromill trench cutter is one way of excavating the trench for the d-walls. An alternative method would be the use of a hydraulic grab, which physically excavates the earth via clamshells. This machine is feasible for excavating panels of shallow depths in soft ground conditions. Lentor station will be constructed top-down.

At the groundbreaking ceremony, it was revealed that CR5 will be procuring their 2 TBMs from China Railway Engineering Equipment Group for the drives from Lentor to Mayflower station via 5XO. This is the first time CREG's TBMs are being used in Singapore soil.

Preparations are underway for the initial road diversion at the crossover site. The road will be diverted east of the original alignment. 5XO will be structurally completed and backfilled by 2017. The road will be realigned then.

Lentor Drive has diverted
Groundbreaking Ceremony on 6 September
Prime Minister Lee viewing the exhibit of the T209 TBM which will be manufactured by China Railway Engineering Equipment Group

Bauer GB 46 - A hydraulic grab to excavate the d-wall
View of the machine and guide wall from above

Alignment of the old road

Junction diversion at Yio Chu Kang Rd
YCK/AMK Avenue 4

Closed slip road from Ave 4 to YCK
Station box


Diversion plan for 5XO
Diversion from inbound traffic from YCK
The road will be pushed to the east

Groundbreaking Ceremony media credited to -
Seng Han Thong and Lee Hsien Loong from AMK Town Council

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