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PROTECTION OF BUILDINGS AND STRUCTURES WITHIN THE INFLUENCE OF TUNNELLING WORKS (2015)
The Klang Valley Mass Rapid Transit Sungai Buloh-Kajang (KVMRT-SBK) Line is the first MRT Project in Malaysia. The 9.3-km underground twin-tunnels between Semantan North Portal and Maluri South Portal are constructed using tunnel boring machines (TBMs). The general framework that was adopted to identify and predict the performance of the buildings and structures within the influence of tunnelling are first discussed. The paper then discusses the Sungai Kerayong Bridge case history, in which the tunnel drives encroach into the foundation systems of a road bridge and the micropile training walls along a river. The shallow cover of the tunnels also posed a risk of floatation, and this problem is compounded by the presence of a deep soil valley. The special considerations which were involved, from the beginning of the design stage to the execution of the solutions, led to valuable lessons.
International Conference and Exhibition of Tunnelling and Underground Space IEM Kuala Lumpur 3-5 March 2015
MMC-GAMUDA KVMRT (T) Sdn Bhd, Kuala Lumpur, Malaysia