Publication Navigation

Site Navigation

Malaysian tunnel breaks record

Publishing Date
06 Apr 2011 10:12am GMT
Trenchless World

Pipe jacking  

Malaysian under-river tunnel breaks record
A recently completed tunnel on the island of Borneo has become Malaysia’s longest-ever under river pipejack project. Contractor Kumpulan-Nishimatsu-Hock Seng Lee consortium (KNH) has achieved what has been hailed as a technical milestone, following the completion of the 280m tunnel under the Sarawak river.
The work included the jacking of 92 sewage pipes of 1.5m diameter, as well as the construction of deep shafts in the city to allow lowering and retrieval of the tunnel boring machine (TBM).
During its 280m drive, through mostly hard rock, the laser-guided (TBM) required three changes of cutterhead, although this did not prevent it from arriving at its destination on schedule.
The alternative method would have been to construct an open trench along the entire pipeline route through the city of Kuching, crossing the river by means of a costly bridge and pumping station.
The completed under-river section forms part of an 8km tunnel linking Kuching to a new sewerage plant near the Zecon toll which will process the city’s wastewater and remove a major pollution source. Currently, Kuching’s sewage is stored in septic tanks which are more often than not emptied untreated into rivers, while grey water ends up in rivers and waterways. The main sewer line is expected to be completed by the beginning of 2012, with connections in the central business district starting this year.

More News By Subject

Site Search

Read articles from the latest Print Edition - TW Jan/Feb 2015

Professional PlacementsProfessional Placements: Executive Director - PDAC

The Prospectors & Developers Association of Canada (PDAC) is seeking an Executive Director (ED) to oversee its operations from its headquarters in Toronto, Ontario

Russian precious metals company Polymetal International plc’s commitment to establishing an extensive pipeline of growth projects has continued with the acquisition of the Kyzyl gold project.
Russian precious-metals company Polymetal International plc has made significant progress at the Semcha platinum-group metals (PGM) property in the past year as it moves the project towards a preliminary economic assessment
The Republic of Guinea intends to launch, pursuant to the mining Code, a competitive and transparent invitation to tender for three bauxite mining blocks located in the prefectures of Boffa, Boké and Télimélé.
Indochine Mining Limited is developing a high-grade gold project at Mt Kare in PNG by rapidly developing wide, high-grade gold zones
Sarama Resources is a West Africa-focused gold explorer with substantial landholdings in Burkina Faso, Liberia and Mali.

Recently Created or Updated Company News Portals

Recently published Reports:

No results were found