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Keywords: tunnel
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Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-601
... ABSTRACT: This paper details the design of a multilevel anchored diaphragm wall which forms part of a cut and cover tunnel for the Eastern Distributor Motorway in Sydney. The paper also presents settlement predictions and proposed monitoring program for the structure, as well as settlement...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-611
... ABSTRACT: The relevant tunneling methods of various excavation sequences and support systems are reviewed in detail. In addition, a numerical model was established to evaluate the performances of these methods. In the numerical analysis, the strain softening constitutive law of squeezing rocks...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-581
... ABSTRACT: The stability of tunnels constructed in clay with overlying layers of coarse grained soil is examined using data from centrifuge model tests. Results show that the stability of a tunnel in the lower clay layermay be influenced by the presence of an upper layer depending on the type...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-571
... ABSTRACT: A 3D mathematical modelling of a tunnel construction using an EPBS shield type machine is presented. The excavated soils are soft and hard clays under phreatic level and the different construction phases, including the grout injection, are simulated. The calculation results, namely...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-016
...ON THE OBSERVATIONAL METHOD IN TUNNELLING K. Kov‡ri1 and P. Lunardi2 ABSTRACT Continuous observations made during the driving of a tunnel have always been taken for granted, just like keeping one s eyes on the road when driving a car. Therefore, the term observational method often produces...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-031
... ABSTRACT: In tropical areas, weathering is common down to several tens of metres, and can occur to depths of over a hundred metres. Tunnels and excavations in such areas are therefore very likely to encounter weathered rock. Weathering involves progressive weakening of the rock, ultimately...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-032
..., the technique was used for the first time in lieu of underpinning to protect surface structures from settlement during soft ground tunneling (Baker et al., 1983) Since its introduction, compaction grouting has been used extensively in the United States as a remedial tool. However, in recent years its use has...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-037
... TBM TUNNELLING IN DIFFICULT GROUND CONDITIONS Giovanni Barla1 and Sebastiano Pelizza2 ABSTRACT This paper is to discuss TBM tunnelling in difficult ground conditions, when problems are met which may reduce dramatically the average progress rates and practical consequences may be such as to pose...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-017
...GEOENGINEERING CONSIDERATIONS IN THE OPTIMUM USE OF UNDERGROUND SPACE Raymond L. Sterling1 and Jean-Paul Godard2 1 CEFT Professor of Civil Engineering, Director, Trenchless Technology Center, Louisiana Tech University, Ruston, LA, USA 2 Vice-President of the International Tunnelling Association...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-022
...ALPTRANSIT: ENGINEERING GEOLOGY OF THE WORLD'S LONGEST TUNNEL SYSTEM Simon Loew1, Hans-Jakob Ziegler2, Franz Keller3 ABSTRACT AlpTransit lines AlpTransit access routes Conventional lines - xisting I Planned high-speed links Figure 1: The European high speed railway network. PROJECT OVERVIEW...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-146
... substances from spreading into the surrounding ground. BACKGROUND Underground construction works are often faced with problems relating to ground water. As a rule, watertightness requirements always apply in Sweden for underground road and railway tunnels. These requirements are set in order to prevent...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-023
... SUMMARY: The excavation of a road tunnel in a region with complex hydrogeological conditions and the presence of valuable mineral water springs is the subject of this case history paper. The tunnel comprises two sections, Frasnadello and Antea, linked by a bridge, and has a length of 2400 m...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-129
... assessment hazard contamination tunnel Glasgow desk study graf moltke site CONTAMINATED GROUND: CASE HISTORIES FROM SCOTLAND AND GERMANY Fred G. Bell1, Dieter D. Genske2 and Nick Hytiris3 ABSTRACT In industrialized countries one of the legacies of the past is contaminated ground due to mining...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-019
... a quasi-monolith. In the case of retaining structures or underground excavations, prestressed anchors are used in addition to conventional reinforcement. The paper focuses on retaining structures, underpinning of buildings, and tunnelling. Residual shear strength of the ground is considered an essential...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-024
...~ b) construction of large offshore embankments by using a slurry of cement-mixed sand at the ramp sections, also controlling the strength, and dry cement-mixed sand at a flat place of the embankment~ c) construction of shield tunnels with the world''s largest diameter in successive stiff cementmixed...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-035
.... A spreadsheet for carrying out these calculations is given in Table 4 5. Table 4: Spreadsheet for the calculation of rock mass properties Input: sigci = 10 MPa mi = 10 GSI = 30 Depth of failure surface or tunnel below slope = 25 m Unit wt. = 0.027 MN/n3 Output: stress = 0.68 MPa mb = 0.82 s = 0.0004 a = 0.5...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-005
... of tunneling on existing structures is a major concern. This report addresses the main aspects of tunneling and underground works performed in soils and soft rocks. A summary is presented of the main features related to construction techniques, ground investigations, design methods, and instrumentation...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-171
... of Melbourne. The road collapse was associated with a 4m diameter sewer tunnel being driven through mixed soil conditions under compressed air at a depth to the crown of about 18m . Emergency grouting was conducted from tunnel level and the road surface after the road surface had subsided over 400mm. Over...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-362
... parts of Switzerland. Each of these axes consists of 2 to 3 base tunnels, the longest being the two-tube Gotthard base tunnel (57 kms in length), which is currently the world's longest tunnel under construction. Within this system, an existing base tunnel will be used (the Simpson base tunnel), a second...
Proceedings Papers

Paper presented at the ISRM International Symposium, November 19–24, 2000
Paper Number: ISRM-IS-2000-348
...360° JET-GROUTED CONICAL CHAMBERS ALLOW SAFE TUNNELLING UNDER A RIVER WITHIN AN HIGHLY PERVIOUS ENVIRONMENT. G. Guatteri, A. Koshima, R. Lopes, V. Doro Altan - (1) ABSTRACT In the São Paulo continuously expanding mega-city it is no longer possible to convey high voltage cables in sub-superficial...

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