The Sungai Kelinchi, Perak Hanjong tunnels - Malaysia / Metro tunnels and stations / PeBeKa S.A.

PeBeKa built a discharge tunnel for the Sungai Kelinchi reservoir, a hydrotechnical tunnel on the island of Penang, and a shaft together with a transport tunnel for the Perak Hanjong cement plant. The execution of the task was hindered not only by the geological and technical conditions but also by the very location of the construction site in the middle of a jungle. The tunnels were built based on the traditional mining method.

The tunnel with the length of 367 m constitutes a part of “The Kelinchi River Dam” hydrotechnical facility; it was built based on the NATM technology.
Because of its location in a jungle, the construction site had to be completely independent and self-sufficient with respect to power supply, which required the installation of Diesel power generators, compressors, and circulating water pumps drawing water from the lake.

The Sungai Kelinchi, Perak Hanjong tunnels - Malaysia

Investor: Universalebau, Perak Hanjong
Time of project execution:

1996 – the water discharge tunnel for the Sungai Kelinchi reservoir
1997 – 1998- the Penang hydrotechnical tunnel; the shaft and transport tunnel for the Perak Hanjong cement plant

Additional technical data:

Łączna długość tuneli: 4900 m
Średnica w obudowie: 5,2 m
Wykorzystana technologia: Metody górnicze i budowlane z zastosowaniem niezmechanizowanej tarczy osłonowej

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Location

Malaysia

Project outline

In July 1997 the company started the construction of a shaft and a transport tunnel for the Perak Hanjong cement plant. Under a shaft with the depth of 187 m and the diameter of 3 m sunk by Universale Bau, PeBeKa specialists built a loading chamber and a belt conveyor tunnel with the length of 18 m. These workings are used to transport limestone directly from the quarry to the cement plant.

Under a separate contract, PeBeKa bored a hydrotechnical tunnel with the length of 100 m, in a steel arch support, on the island of Penang. The tunnel secures the lower part of the city against flooding with stormwater in the wet season and conveys stormwater directly to the sea.