138A

826115 FINAL BILL FOR THE PORTLAND OUTFALL Roberts, D; Flint, G Consult Engr, V46, N6, June 1982, P24-28

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Discusses the driving of the 2700m long, 1.68m diameter concrete lined outfall tunnel in Dc~set, UK, where conditions necessitated the use of a shield, compressed air arf~ dewaterlng from a moored barge. The progress of construc- tion is described up to the point where 2 massive inrushes of seawater occurred.

SITE INVESTIGATION FOR TUNNELS: I. FIVE CASE STUDIES

Dumbleton, M Ground Engng, VI5, N4, May 1982, P30-38

Case studies of 5 tunnel projects are presented, relating predicted ground conditions to the tunnel design: the Sydenham Road Sewer Tunnel, London, the River Medway Cable Tunnels, the Emplngham Reservoir Tunnels, the Tyneslde South Bank Intercepter Sewer, and the River Tyne Siphon Sewer Tunnel (all in th UK). The second half of the paper, which will be published later, will review the general lessons learned from these studie s.

T~LING BY MACHINE Min Mag, V146, N6, June 1982, I~69-487

Briefly discusees the use of drum miners, roadheaders and full-face tunnelling machines in underground mines and describes machines avadlable from the various manufacturers.

LONGEST PIPEJACK MAKEs A BREAKTHROUGH New Civ Engr, h~98, I July 1982, P14-15

R~pQrts the driving of a sewer tunnel l.Sm dia- meter and 4.2km long in Feltbam, London, UKby Jacking length~ of pipe up to 460m long through London clay.

TUNNELLING. sPECIAL FEATURE New Civ Engr, ~94, 3 June 1982, P12-45

A collection of articles including discussions of the following projects: (i) the water supply tun- nel fQr Bogota, Colombia, constructed in squeezing ground, with high methane inflows, (2) Jersey out- fall tunnel through saturated silty clay, (3) a brief review of immersed tube techniques, (4) Illinois (USA) compressed air energy storage pro- Ject to be excavated in dolomltic limestone, (5) the 2.34m diameter Carsington aqueduct tunne].s in Derbyshire, UK, (6) the Don Valley sewer, Shef- field, UK, (7) Killingholme cavern for storage of LPG beneath the water table in chalk, with excav- ation by drilled shafts, (8) Blisworth canal tunnel, Northants, UK, repair work.

FORD BROOK I M P R ~ SCHEME FOR WALSALL Tunn Tunnlg, VI4, ~, July 1982, P58-61

Reports a paper and discussion at the British Tunnelling Society (13 May 1982 ) on the con- struction of the 1.1kin sewer diversion tunnel through diverse types of ground in the centre of Walsall, UK.

PREVENTION OF BLOWOUTS IN SHIELD DRIVEN TUNNELS (IN 2 PARTs) Wheby, F T Tunn Tunnlg, VI4, NS, June 1982, P13-15 (Part i),

vl4, ~, ,~uly 1962, Ply21 (Part 2)

Part i discusses the use of compressed air in shield driven tunnels beneath both land and water and how blowouts by seepage or upheaval can be prevented. Part 2 gives data on a number of tunnelling projects with and without compressed air and examines 4 from the period 1825-1905 in more detail (BrunelIs Thames Tunnel, the Tower Subway, the Hudson Tubes and the City and South London Railway) prior to discussing ad- vances in the state of the ~n~t.

826122 OVERVIEW OF SOFT GROUND TUNNELLING IN THE HIMALAYAS

Chokshi, C K Tunn Tunnlg, V14, N5, June 1982, P21-24

The Himalayas contain Intra-thrust zones, shear zones, folds, faults and fissures, intrusions, synclines, antlsynclines and highly explosive g~.ses. Rocks are mostly soft and of differing types: moderately stratified and Jointed rocks, heavily stratified and/or blocky and sean~ rocks, crushed rocks, squeezing and swelling rocks. The article discusses support by bolts, shotcrete and steel supports, and selection of tunnelling method from full-face, heading and benching, top heading, wall plate drift, side drift, multi-drift, forepoling and/or pre- grouting. Discusses tunnelling_ through crushed, squeezing and swelling rocks sep~Irately, also tunnelling in methane gas and ~chlne tunr~lling versus drill and blast.

826123 TUNNELLING FOR THE DISPOSAL OF NUCLEAR WASTE Tunn Tunnlg, VI4, N5, June 1982, P65-66

A brief report of the British Tunnelling Society/ British Geotechnicel Society meeting of i0 February 1962 at which 5 papers were presented: Radioactive waste management in the UK, The geo- logical research programme, Repository design and engineering in crystalline rocks, Reposi- tories in clay formations, Sub-sea bed disposal.

826124 LOGGING TUNNEL GEOLOGY McFeat- Smith, I Tunn Tunnlg, Vl4, N4, May 1982, •20-25

Proposes a system of compiling a continuous log of conditions at the tunnel face, together with sample log sheets, and explains how this could be integrated into the operation of the project to yield a permanent engineerirg geological record.

826125 CONSTRUCTION AsPECTs OF THE BERLIN METRO Braun, W M Turnl Tunmlg, VI4, N4, May 1982, P43-46

Discusses current practice: in constructing Berlin Metro tunnels in waterlogged sand and silt formations, including a sophisticated modification of the diaphragm wall technique and the use of concrete caissons.

826126 TBM + BENTONITE FACE UP TO 2~ TUNNEL JACKING JOB IN IPSWICH

Andrews, W Tunn Tunnlg, Vl4, N4, May 1982, P54-55

Reports the use of tunnel Jacking, in which a full face mechanised tunnelling machine is used together with bentonite injection, in dri- ving s 1.2-1.Sin diameter sewer tunnel in varying density sand with little evidence of groundwater, at Ipswich, ~{.