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Nakamura tunnel highlights NATM
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Radioactive waste disposal 921511 What does the scientist need to know about quality assurance to effectively implement quality assurance principles Hedges, D Rock Mechanics Contributions and Challenges: Proc 31st US Symposium, Golden, 18-20 June 1990 P787-790. Publ Rotterdam. A A Balkema, 1990 Quality Assurance procedures used today for radioactive and hazardous waste disposal were initially developed for the nuclear plant industry. These projects involve engineers from many disciplines. The necessity for adequate and well managed QA is emphasised, despite the many supposed difficulties in its implementation. Management responsibilities and the effective implementation of available customised QA programs are discussed.
921512 Contributions of quality assurance to rock mechanics and challenges of program implementation Sublette, W R; Mitchell, M J; Crawford, S L Rock ~Wechanics Contributions and Challenges: Proc 31st US Symposium, Golden, 18-20 June 1990 P791-798. Publ Rotterdam." A A Balkema, 1990 QA is an integral part of characterisation, design, and performance assessment for the Yucca Mountain radioactive waste repository program. It must be developed and implemented for rock mechanics and other site related activities. The QA program must ensure quality engineering without disrupting production and provide data to meet all regulatory requirements. Criteria must be laid down and verified. Type and variability of the geologic medium influence design methods and rock mechanics requirements. Implemented properly, good QA wilt improve quality, confidence, and reliability of work, without significant cost increase.
Underground construction methods 921513 Heading through trouble under the park McWilliam, F Tunn Tunnlg V23, N7, July 1991, P24-26 Construction of twin road tunnels in Madrid through Miocene clay containing irregular sand pockets is described. Although shafts and galleries were known to exist, they could not be located by radar, which suggested they are infilled. Roadheader excavation with support according to NATM principles, but with steel ribs to reduce lining flexibility and minimise ground movement, was employed. A large cave-in occurred when a pocket of water beating sand was encountered and remedial filling from the surface with sand/cement/fly ash was necessary. Chemical grouting was used to ensure stability following this incident. 921514 NATM in soft ground for Fort Totten Station Wagner, H; Schulter, A; Kolitsch, F Tunn Tunnlg V23, N7. July 1991, P38-40 The Fort Torten Station and running tunnels of the Washington DC metro are in Cretaceous sediments consisting of overconsolidated gravel, sands, and plastic clay. A combination of
NATM and cut and co~er construction has been used. Support for weakly cohesive sands in the tunnel crown was by forepoting and grouting with microfine cement. Excavation sequencing, design, and back analysis, which included effects of excavation and stress relief, to evaluate in situ soil parameters are described.
921515 Giant urban cavern stretches existing soft ground limits Wallis, S Tunn Tunnlg Summer 1991: NA TM Special Issue. PT-lO Design and construction of a 180m long by 250 sq m seetion underground car park in impermeable clays overlain by gravels and conglomerate beneath a hill in the town of Landsberg, Germany, is described. Excavation was by backhoe, with twin side drifts of 3 benches, then removal of the central pillar, also in 3 benches. An existing, adjacent derelict structure was filled with grout to minimise problems. Careful construction and monitoring resulted in surface subsidence much less than the expected 25mm
921516 Nakamura tunnel highlights NATM Martin, D Tunn Tunnlg Summer 1991, N A T M Special Issue. P31-33 The Japanese version of NATM is described with special reference to the Nakamura tunnel, in ground varying from hard schists to soft ground clays,shales, and sandstones. Drilling and blasting, mucking, support installation, cycle times and costs are considered for the range of conditions met.
921517 Slurry tunnelling systems in action Coller, P J Proc 2nd International Conference on Foundations and Tunnels, London, 19-21 September 1989 I/2, P281-285. Publ Edinburgh: Engineering Technics Press, 1989 Modern slurry tunnelling uses a full face cutter to support the soil and slurry to support the groundwater, and allows construction in hazardous ground without recourse to compressed air, dewatering or other ground treatment. The principles, shields, slurry transport, jacking, and control are described. Three systems suitable for pipe installation (250-300mm diameter) in clay, silt, or granular soils or soft rocks, the MEPCB, Crunchingmole, and Unclemole, are illustrated and cases of their use described.
921518 Specialized urban shaft construction Almeraris, G A; Peyton, T F Proc 1989 Rapid Excavation and Tunnelling Conference, Los Angeles, 11-14 June 1989 P251-273. Publ Littleton. SME. 1989 Three shafts up to 199m deep excavated through moderately jointed muscovite/biotite schists with zones of pegmatite are described. The construction was by both mechanical and conventional methods despite the urban locations. Areas of heavy water inflow were encountered and grouting gas applied to stabilise the ground. Problems of noise and vibration levels, and safety when transporting explosives were overcome by planning and creative thinking.
© 1992 Pergamon Press pie. Reproduction not permitted
Radioactive waste disposal 921511 What does the scientist need to know about quality assurance to effectively implement quality assurance principles Hedges, D Rock Mechanics Contributions and Challenges: Proc 31st US Symposium, Golden, 18-20 June 1990 P787-790. Publ Rotterdam. A A Balkema, 1990 Quality Assurance procedures used today for radioactive and hazardous waste disposal were initially developed for the nuclear plant industry. These projects involve engineers from many disciplines. The necessity for adequate and well managed QA is emphasised, despite the many supposed difficulties in its implementation. Management responsibilities and the effective implementation of available customised QA programs are discussed.
921512 Contributions of quality assurance to rock mechanics and challenges of program implementation Sublette, W R; Mitchell, M J; Crawford, S L Rock ~Wechanics Contributions and Challenges: Proc 31st US Symposium, Golden, 18-20 June 1990 P791-798. Publ Rotterdam." A A Balkema, 1990 QA is an integral part of characterisation, design, and performance assessment for the Yucca Mountain radioactive waste repository program. It must be developed and implemented for rock mechanics and other site related activities. The QA program must ensure quality engineering without disrupting production and provide data to meet all regulatory requirements. Criteria must be laid down and verified. Type and variability of the geologic medium influence design methods and rock mechanics requirements. Implemented properly, good QA wilt improve quality, confidence, and reliability of work, without significant cost increase.
Underground construction methods 921513 Heading through trouble under the park McWilliam, F Tunn Tunnlg V23, N7, July 1991, P24-26 Construction of twin road tunnels in Madrid through Miocene clay containing irregular sand pockets is described. Although shafts and galleries were known to exist, they could not be located by radar, which suggested they are infilled. Roadheader excavation with support according to NATM principles, but with steel ribs to reduce lining flexibility and minimise ground movement, was employed. A large cave-in occurred when a pocket of water beating sand was encountered and remedial filling from the surface with sand/cement/fly ash was necessary. Chemical grouting was used to ensure stability following this incident. 921514 NATM in soft ground for Fort Totten Station Wagner, H; Schulter, A; Kolitsch, F Tunn Tunnlg V23, N7. July 1991, P38-40 The Fort Torten Station and running tunnels of the Washington DC metro are in Cretaceous sediments consisting of overconsolidated gravel, sands, and plastic clay. A combination of
NATM and cut and co~er construction has been used. Support for weakly cohesive sands in the tunnel crown was by forepoting and grouting with microfine cement. Excavation sequencing, design, and back analysis, which included effects of excavation and stress relief, to evaluate in situ soil parameters are described.
921515 Giant urban cavern stretches existing soft ground limits Wallis, S Tunn Tunnlg Summer 1991: NA TM Special Issue. PT-lO Design and construction of a 180m long by 250 sq m seetion underground car park in impermeable clays overlain by gravels and conglomerate beneath a hill in the town of Landsberg, Germany, is described. Excavation was by backhoe, with twin side drifts of 3 benches, then removal of the central pillar, also in 3 benches. An existing, adjacent derelict structure was filled with grout to minimise problems. Careful construction and monitoring resulted in surface subsidence much less than the expected 25mm
921516 Nakamura tunnel highlights NATM Martin, D Tunn Tunnlg Summer 1991, N A T M Special Issue. P31-33 The Japanese version of NATM is described with special reference to the Nakamura tunnel, in ground varying from hard schists to soft ground clays,shales, and sandstones. Drilling and blasting, mucking, support installation, cycle times and costs are considered for the range of conditions met.
921517 Slurry tunnelling systems in action Coller, P J Proc 2nd International Conference on Foundations and Tunnels, London, 19-21 September 1989 I/2, P281-285. Publ Edinburgh: Engineering Technics Press, 1989 Modern slurry tunnelling uses a full face cutter to support the soil and slurry to support the groundwater, and allows construction in hazardous ground without recourse to compressed air, dewatering or other ground treatment. The principles, shields, slurry transport, jacking, and control are described. Three systems suitable for pipe installation (250-300mm diameter) in clay, silt, or granular soils or soft rocks, the MEPCB, Crunchingmole, and Unclemole, are illustrated and cases of their use described.
921518 Specialized urban shaft construction Almeraris, G A; Peyton, T F Proc 1989 Rapid Excavation and Tunnelling Conference, Los Angeles, 11-14 June 1989 P251-273. Publ Littleton. SME. 1989 Three shafts up to 199m deep excavated through moderately jointed muscovite/biotite schists with zones of pegmatite are described. The construction was by both mechanical and conventional methods despite the urban locations. Areas of heavy water inflow were encountered and grouting gas applied to stabilise the ground. Problems of noise and vibration levels, and safety when transporting explosives were overcome by planning and creative thinking.
© 1992 Pergamon Press pie. Reproduction not permitted