Metro Manila Subway
Metro Manila Subway is an enormous infrastructure venture across a densely populated area capable of transporting 1.74Million passengers, easing congestion on roading. The 36km north-south network with 15 stations is expected to cost USD7billion.
The Geotechnical investigation project across the Northern sector consisted of hundreds of drillholes. Drilling results were variable with poor RQD across different soils and volcanic units. RDCL supplied Televiewer scanning (borehole imagery), which JICA engineers used to determine static water level, geological units, fractures and defects. Data was digitally saved in 3D log outputs, allowing engineers across the world to easily understand the geotechnical risks for the tunnelling.
RDCL dedicated a team to the project in Manila and permanently deployed Televiewer tooling to Philippines, growing the RDCL footprint for televiewer work across Asia Pacific. Our staff were locally based, deploying daily for several months and quickly scanning holes, while our New Zealand processing team downloaded data overnight and presented results the following day. Due to variable to poor drilling results, with questionable core recovery, RDCL de-risked the design scope, as supplied reassurance of geology and geotechnical properties.
Wireline Geophysics including; Acoustic and Optical Televiewers (ATV & OTV), Downhole Seismic