Report No. : GEO Report No. 372

Report Title : Review of Engineering Geological Aspects of Hong Kong West Drainage Tunnel (2024), 92 p.

Author : K.L.H. Lo

Abstract

Tunnel mapping records are invaluable resources for geotechnical practitioners as these records provide a factual account of the subsurface ground conditions along the tunnels. Hong Kong West Drainage Tunnel traverses from Tai Hang to Cyberport, crossing crosses different rock formations, eight major faults as well as subsidiary faults, shear zones and contact zones in the western part of Hong Kong Island. The consultants' design models and the contractor's as-built tunnel mapping records of the project have been reviewed to evaluate the ground model along the tunnel alignment in detail. Review of geological conditions, including lithology, major faults, minor faults, photolineaments, joints as well as the rock mass quality and groundwater conditions of the main tunnel were conducted.

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