Tunnels

Solva Tunnel, Wales

Client – Welsh Water (Dwr Cymru) Tunnel condition survey and maintenance recommendations for a 170m long unlined access tunnel through thinly bedded and jointed sandstone and mudstone.

Posted in Tunnels, Underground Mines

Harbour Area Transfer Scheme, Hong Kong

Client – MTR / ATKINS CHINA Review of layout alternatives for adit complexes at the base of deep shafts. Review of ground conditions, production of models and concept design of temporary support schemes.

Posted in Sewerage & Drainage, Tunnels

Brisbane Airport Link, Australia

Client: THIESS JOHN HOLLAND Overall review of major underground scheme. Independent detailed design evaluation of Kedron Ramp comprising 23m span tunnel in very shallow cover, and in weathered volcanic sediments. Detailed geological modelling and stability assessment via¬† FLAC, UDEC and … Continue reading

Posted in Caverns and Underground Mines, Tunnels

Express Rail Link, Hong Kong

Client : Atkins China Ltd Development of strategy for the control of groundwater in the long and short term and assessment of hydrogeological and geotechnical impacts, design concept selection and development of specification. Review of excavation support for larger spans. … Continue reading

Posted in Rail, Tunnels

Gilgel Gibe II, Ethiopia

Client: ELECTROCONSULT Independent assessment of ground conditions and collapse mechanisms of TBM tunnel under very high cover, and flowing ground.

Posted in Tunnels, Water & Hydropower