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Next gen potash At a joint meeting of the British Tunnelling Society and Min South, John Elliott - managing Director, Alan Auld Engineering and Alun Price Jones - technical Director, Cementation Mining presented the Picadilly potash mine in Canada. The presentation looked at some deep mine shafts and explored the next generation of potash mines currently being sunk in Canada. The design and construction of the shafts for the Piccadilly project were also described in detail.
Crossrail C310 Geotechnical and tunnelling related specifics in urban tunnelling, and a river crossing with low overburden are covered in this BTS presentation on Crossrail contract C310, Thames Tunnel.
East side explosives At February's joint BTS/Minsouth meeting. Andy Thompson of Hatch Mott MacDonald delivered a presentation on the use of explosives for the construction of New York's East side access. Andrew Hindmarch of Mott MacDonald gives this report from the meeting.
Crossrail in practice As Crossrail, Europe’s largest civil engineering project, reaches the advanced point of construction, Simon Pugh, lead engineer in the route Control Centre for Crossrail presents to the BTS and Minsouth audience about how it is built and how it will be run
Forever Young At WTC 2013 in Geneva, the British Tunnelling Society put forward a proposal to work towards the creation of a young members group for the International Tunnelling Association. For those who aren’t aware of what such a group could get up to, Tunnels gives this brief look at some BTSYM activities
Sprayed overbridges SCL overbridges at tottenham court road. Andreas Feiersinger of dr. Sauer & partners, and Phillip Lea of Halcrow were the authors of this paper, which was presented at the March meeting of the british tunnelling Society
Norra Laenken’s novel lining
In the January BTS meeting, technical and risk manager Andreas Raedle, construction manager Jörg Steppuhn and site manager Felix Lenzen, all of Hochtief Solutions, presented on the Norra Laenken road tunnel project in Stockholm, Sweden. This article gives an overview of both the design and construction for the Lot NL 35
project, including the pre-grouting works, the drill and blast operations and a new concept for inner lining
Ultra rapid under pass URUP is a shaftless shield technology. The TBM is launched and arrives at ground level and drives under shallow cover without ground treatment. The result is significant cost savings, reduced construction time and reduced environmental impact. The technology was presented at the September 2012 BTS meeting by Makoto Kanai and Akihiro Nishimori of Obayashi.
Under fire under work The risk of fire in tunnels under construction can be reduced in several ways. At the November 2012 BTS meeting Barry O’Donoghue, Mott MacDonald site contract manager; Francois Pogu, Vinci's Lee Tunnel project director; Dave Bulbrook, London Fire Brigade group manager; and Donald Lamont of Hyperbaric & Tunnel Safety reviewed the Storbelt and A86 Socatop tunnel fires, protocol for working with fire brigade and current legislation required for contractors.
Blast Protection Design The security of tunnels against potential detonated explosions from within and outside the tunnel structure is a main challenge facing to owners and operators of tunnel systems, particularly those used for vehicle or rail traffic. This paper by Sunghoon Choi of Parsons Brinckerhoff USA introduces a design practice recently developed for protecting underground structures from explosion in USA