Expansion of port of Tanjung Manis (Malaysia)
The port of Tanjung Manis in Sarawak (Malaysia) is currently undergoing expansion, with more facilities planned. The old jetty will be replaced by a larger one with double berth capacity. The Rajang River will be made suitable for ships that have a deeper draught, and to protect its banks against the erosion that shipping will cause, TenCate geosynthetics are being used.
The Rajang River flows in a south-westerly direction, passing among other places Tanjung Manis, and finally discharges across a swampy delta into the South China Sea. Its total length of 560 kilometres makes the Rajang the longest river in Malaysia. It is navigable by ocean-going vessels as far as Sibu, some 130 kilometres inland. After that the river becomes shallower, and consequently for the next 160 kilometres it is navigable only by shallow-draught craft.
The port of Tanjung Manis lies approximately 30 kilometres from the sea. It has a container terminal, a deep-sea fishery wharf and facilities, and a jetty for oil, gas and chemicals transport (OGC). The OGC jetty will be replaced by a new one, which will be larger and have two berths, each 200 metres in length, and deeper water to accommodate ships with a greater draught (12 metres).
As larger ships cause greater swell and thus erosion, the banks will be given added protection, for which TenCate geosynthetics will be used. Along the river banks TenCate Geotube® units will be installed that measure 25 metres in length; these will then be filled with locally available sand.
The units will have a timber raft foundation, which will be covered with an anti-erosion layer of geotextile. The TenCate Geotube® ‘toe dyke’ forms the foot of the revetment of the steeply rising banks. This revetment consists of parallel TenCate Geomattress™ units filled with sand.