Equip & Tech Review Sept
Computer screen shot from Rocscience Phase 2 software
rockfall barrier systems, and rock and soil slopes, to name but a few.
Rocscience Inc. has several soft- ware programs, which can be used for tunnelling applications. Phase 2, a 2-dimensional, elasto-plastic finite element program for stress and deformation analysis. The latest version of Phase 2 has many advanced features, which benefit tunnel design, including powerful
support modelling features, such as for various types of bolts, or tunnel linings (e.g. shotcrete or concrete). Composite lining systems can be modelled, with staged application of up to four layers of support, with an optional joint between the rock mass and the first layer. Material properties can be staged, for exam- ple, to model the softening of a rock mass, or the strength increase of a shotcrete liner, with time.
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EQUIPMENT AND TECHNOLOGY REVIEW
Axisymmetric modelling allows for pseudo-3D modelling of an advancing tunnel face.
Other Rocscience software pro- grams with tunnelling applications are: RocSupport (support estima- tion for tunnels in weak rock, using ground reaction curves), RocLab (a rock mass strength analysis using the generalised Hoek-Brown failure criterion), and Unwedge (limit equilibrium analysis of 3-D wedge
For further information contact: Rocscience Inc., 31 Balsam Ave., Toronto, Ontario, Canada M4E 3B5, Tel: +1 (0) 416-698-821 ,
The new PFL 8 loader from Paus
and can be equipped with a com- mon exhaust gas filter system.
The San Bernardino Tunnel revi- sion project will be one of the first sites where the new PFL 8 will be in operation. Small cross section evacuation tunnels will be built off the main tunnel and the PFL 8 was the ideal loader for these limited dimensions.
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The Paus loader range now con- sists of 4 machines with capacities of 0.8, 1.2, 1.8 and 3m3.
Paus launches new small loader
Paus has now launched the PFL 8, claimed to be the world’s smallest underground loader at only 1.15m wide and 1.65m high. The PFL 8 is powered by the new Deutz BF3L 2011 engine (40kW/2500 min-1)
For further information contact: Hermann Paus Maschinenfabrik GmbH, Siemensstrasse 1-9, D- 48488 Emsbüren, Tel: +49 (5903) 707-0, Fax: +49 (5903) 707-33, Email: firstname.lastname@example.org Web: www.paus.de
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