Tunnelling 94: Papers presented at the seventh international symposium, Tunnelling 94

Hydropower.- Lesotho Highlands Water Project: design and layout of underground works for 'Muela Hydropower Project.- Design and construction of the cooling water intake tunnel system for Point Aconi generating station, Nova Scotia.- Comparison of two classification systems as applied to the Alpe Devero tunnel, Italy.- Metro/Rail.- Planning and design of tunnels for the Jubilee Line extension, London.- New St Clair River tunnel, Canada-USA.- Application of NATM to design of underground stations in London Clay.- Water/Waste.- Underground works on Third Nairobi Water Supply Project.- Design and construction of caverns for an underground sewage treatment plant, Hong Kong.- The Snake: a rock tunnel for storing combined sewage water, Stockholm.- Tunnelling on the Penzance and St. Ives sewerage scheme, Cornwall, England.- Tunnel-boring Machines.- Two tunnel-boring machines for Lesotho: a design and case history.- Open TBM tunnelling in complex geology for railroad in Sweden.- Use of sedimentary rock impact indices in evaluation of tunnel-boring machine performance.- Development and performance of tunnel-boring machines on Phase II of the London Water Ring Main.- Environmental Issues.- Environmental planning for the Massachusetts Water Resources Authority's MetroWest water supply tunnel.- Palais Bernheimer in Munich: tunnelling for parking space under a historic building.- Limiting the damage to historic buildings due to tunnelling: experience at the Mansion House, London.- Compensation grouting to limit settlements during tunnelling at Waterloo Station, London.- Ground movement model validation at the Heathrow Express trial tunnel.- Case Histories.- Gjøvik Olympic Mountain Hall, Norway.- Construction of new escalator shaft and passageways at London Underground's Waterloo Station.- Water in TBM drives, Delivery Tunnel South, Lesotho Highlands Water Project.- Tunnel-boring Machines.- CEN safety standards for tunnelling machines and air locks.- Tunnels below waste disposal tips.- Machine tunnelling in the northwest of England.- EPB-shield tunnelling for the Taipei Metro, contract 201A.- TBM drive management by use of computerized systems.- Research.- Long-term measurements of loads on tunnel linings in overconsolidated clay.- Non-destructive investigation of tunnels.- Case Histories.- Design, construction and performance of a 700-m 'cover and cut' tunnel in soft clay, Norway.- Shotcrete in the construction of Pen-Y-Clip tunnel, North Wales.- Face support for a large Mix-Shield in heterogeneous ground conditions.- Design.- Tunnel ring design, development, testing and manufacture for the London Water Ring Main.- Medway tunnel detailed design.- Developments in precast concrete tunnel linings in the United Kingdom.- Case Histories.- Channel tunnel: French undersea crossover design and construction.- Design and construction of Metsovon road tunnel, Greece.- Construction of the 'Passante Ferroviario' link in Milan, Italy, lots 3P, 5P and 6P: excavation by large earth pressure balanced shield with chemical foam injection.- Pen-Y-Clip road tunnel, North Wales: achieving a dry lining through a pervious rock formation.- Hydropower.- Tunnel design in the design and construct context-the Pergau experience, Malaysia.- Serra da Mesa project, Brazil: excavation of shafts and penstocks.- Tunnel Machinery.- Rock cutting with roadheaders.- Increased productivity in construction of civil and mining tunnels through the use of high-capacity tunnel-boring machines and continuous belt conveyor muck haulage.