Cai Mep - Thi Vai International Container Port

Client: Ministry of Transport and Communication
Project Management Unit No. 85 (“PMU 85”)

Main Contractor: TOA-TOYO Joint Venture

Project Details:

Cai Mep International Container Terminal, located in Ba Ria-Vung Tau Province about 70km south of Ho Chi Minh City, is a JBIC-funded soft loan development project.

Green Cosmos jointly with our local partner JPS Engineering & Construction undertake the soil improvement work (PVD) package over the entire 36Ha site deploying specialized hydraulic winch PVD installation machines to field install approximately 6.8 million metres of prefabricated vertical drains to depth of -50m below ground to consolidate the highly saturated soft clay subsoil.

In addition, a total of 148km of prefabricated horizontal strip drains and 10km of horizontal drainage trench were constructed as part of the overall soil improvement works.

Pictorials on Field installation of PVDs:

Overview on PVD installation work at Cai Mep Int’l Container Terminal Project	Specialized Hydraulic Winch PVD Installation Machine - excavator base mounted
Hydraulic Winch PVD Installation Machine equipped with 56m rig structure	PVD installation depth capability of up to 52m below working platform
Installed PVD cut off at designed length above working platform	Anchor shoe plate holding PVD inserted into steel mandrel ready for next PVD point
Electronic Data Logger System for depth measurement and verticality control	Logged data displays PVD depth, location, start/finish *time, point ref. #, grid coordinates, tilt*
*Inclinometer device mounted on hydraulic winch assembly (see blue box - top right)*
Verticality control on both X- and Y-axis to maintain PVD eccentricity to within +/- 1⁰ tolerance	*Erection of PVD leader structure in progress*
Lifting and lowering of PVD leader structure facilitated entirely by excavator base machinery

Pictorials on Construction of horizontal Drains:

*Overview on horizontal drainage trench construction*	*Approved crushed stone stockpile for horizontal drainage trench construction*
*Perforated PVC pipe stockpile*	Excavation of horizontal drainage trench in progress. Note excavator tracks traverse between PVD points to avoid any physical damage to installed PVDs
*Placement of approved non-woven geotextile into excavated trench*	*Intersection of main and lateral drainage trenches*
*Placement of perforated PVC pipes into gravel filled base of drainage trench*	*Installed horizontal strip drain connects securely into gravel filled trench*
*PVD installation in progress up to 50m below working platform*	*PVD installed in square grid formation with cut-off length 1m for connection to horizontal strip drains*
*Soft mud spoils at PVD points removed prior to laying of horizontal strip drains*	*Placement of horizontal strip drains between PVD points*
*PVD overlaps onto laid horizontal strip drain*	*Overlapped PVDs securely stapled together over horizontal strip drain*
*Overview of installed horizontal strip drains*	*Overview of installed horizontal strip drains ready for excavation of lateral drainage trench*