Abstract
Extensive monitoring of the ground and buildings affected by the construction of the Island Line (ISL) of the Mass Transit Railway (MTR) in Hong Kong was carried out between 1982 and 1986. Predictions were based on the Peck method (Peck, 1969) and the monitoring enabled a comparison of prediction and performance to be made. The results suggested that tunnels in completely weathered granite behaved as in Peck's sands (cohesive granular soils) whilst the shallow tunnels in colluvium, alluvium or marine clays behaved like Peck's soft clay. This paper reports the results of some of the monitoring and provides a tunnelling settlement estimate method suitable for Hong Kong.
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