Microtunnelling at CHP Pipeline Tunnels and Shafts. M133


Upgrade of Grain Power Station



As part of the E-on upgrade of Grain Power Station, a new CHP pipeline was to be constructed. To facilitate the passage of the new CHP pipeline below the existing Cryogenic pipelines (of strategic national importance) and the B2001 road, A E Trenchless Solutions Ltd were contracted to undertake the following specialist works:

  • 2No 9.0m id x 25m deep segmental shafts.
  • 2No 145m (twin) 1800id slurry tunnels with our Herrenknecht machine, B2001.
  • 2No 120m (twin) 1800id slurry tunnels with our Herrenknecht machine. Cryogenic

All 4No tunnels will be constructed using DN2000 GRP jacking pipes.

Specific Difficulties

The 2No 120m long tunnels are constructed at an 8 degrees uphill gradient.

Ground Conditions

Predominantly firm to stiff London clay.

Study Project Date  
Microtunnelling at Frederick Road Track Drainage Connection, Salford. M234 05/06/2017
Microtunnelling at Amlaird to Corsehouse Maining Out, Newton Mearns, Scotland. M233 04/07/2016
Pipe Jacking at Corwen Flood Prevention, Corwen, Denbighshire. M202 01/12/2014
Microtunnelling at Mill Lane, Northampton. M214 04/08/2014
Microtunnelling and Shaft Sinking at Bargeddie, Scotland. M213 04/08/2014
Pipe Jacking at Rossendale Clusters, Rawtenstall. M207 14/04/2014
Pipe Jacking at St. Martins Flooding, St Martins, Shropshire. M199 02/09/2013
Microtunnelling at Outwood to Buckland Strategic Water Main, Surrey. M192 03/06/2013
Microtunnelling at Channel Reach DG5, Crosby, Sefton. M185 16/07/2012
Microtunnelling at Meadowhead to Stevenson, Irvine, Scotland. M175 31/08/2011
Microtunnelling at Ineos Chlor Site Drain, Runcorn, Cheshire. M172 31/07/2011
Microtunnelling at Hall Nook FAS, Penketh, Warrington. M167 28/02/2011
Microtunnelling at A467 Road Crossing, Risca, Newport, South Wales M154 28/02/2010
Microtunnelling at Suffolk Road Rail Crossing. M148 30/11/2009
Microtunnelling at Beckton to Woodford Pipeline. M146 31/10/2009
Microtunnelling at A1 Dishforth to Leeming Carriageway Widening. M144 31/08/2009
Microtunnelling for Gas Pipeline, Lincoln - Gainsborough Railway Crossing. M141 30/04/2009
Microtunnelling at Millharbour Sewer Diversion. M142 28/02/2009
Microtunnelling at CHP Pipeline Tunnels and Shafts. M133 31/07/2008
Microtunnelling at Main Road, Sidcup FWFAS. M131 31/03/2008
Microtunnelling at Pannal to Asselby 1220 Gas Pipeline - RLX's. M128 31/10/2007
Microtunnelling at Locks Lane, Purton - RLX. M115 31/12/2006

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