Watch this recording of a presentation at the ICE that illustrates the results from a world-first Geobear scheme whereby geopolymer injections were used to stabilise an embankment on the Severn Valley Railway.
This video details the embankment stabilisation element of the talk, to watch the full version please scroll down.
A section of track at Chorley Tunnel in the northwest of England was subject to line speed restrictions due to subsidence. The section in question was at the end of the slab track running through the Chorley Tunnel, a line notable for its electrification scheme in the previous decade. The subsidence was caused by a […]
Read moreBackground The Glenn Douglas railway section, adjacent to a loch with a steep embankment, relied on a King Post retaining wall to hold the ballast in place. Over time, the wooden sleepers forming this wall deteriorated, leading to gaps that caused the ballast to erode down the embankment, jeopardizing track stability. Problem The primary issue […]
Read moreStabilisation of Ballasted Railway Level Crossing Project Overview Location and Background The project focuses on a ballasted railway level crossing located on the South West Mainline. The crossing is part of a high-speed rail line with a line speed of 100 miles per hour and accommodates approximately ten EMGTP (Equivalent Million Gross Tons per annum) […]
Read moreGeobear’s Innovative Solution for the Warford and Watercourse Viaduct This case study explores Geobear’s successful low-carbon intervention at the Warford and Watercourse Viaduct in Cheshire, Runcorn, a project commissioned by Network Rail. The primary challenge was to waterproof the viaduct spandrels and fill voids to prevent rainwater ingress without causing environmental harm to the underlying […]
Read moreBackground A section of railway embankment on the London-Brighton Railway line in East Sussex was identified to be a potential cause for track faults after it was discovered that badgers had burrowed setts within it. In total 35 badger setts were discovered and the client needed a permanent infill solution to prevent the badgers from […]
Read moreKentish Town Slab Track Treatment Geobear produced an innovative design solution to stabilise a section of rail slab track between Kentish Town station and St Pancras station, London. We were presented with a significant geotechnical challenge where the slab track had experienced rapid deterioration which manifested in concrete slab cracking in numerous locations. The main […]
Read moreSummary Geobear was approached by Story Contracting to design a solution to fill the voids in and around the shafts and behind the tunnel lining of the West Coast Mainline Shugborough Tunnel in Stafford. The 1847 tunnel had deteriorated over time and there was a significant risk of collapse. Download PDF Version Introduction Shugborough Tunnel, […]
Read moreCustomer situation and background The Ilmala railway depot, located in Helsinki near Finland’s largest and busiest railway station, had problems with soil subsidence. The Ilmala depot is located in an area that was originally a swamp but was later turned into a landfill. The landfill was in use until 1963, and after several years of […]
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Read moreWe were on site at Harold Wood station recently to fill a void under the ticket office – this video tells the story.
Read moreSlab Re-levelling and stabilisation Project Summary Geobear were called in to treat a settlement issue at Farnham rail depot that was posing a major threat to rail operations around the South East. The base slabs at the depot in Farnham, south of London, were experiencing subsidence, which was making the ground and tracks above uneven. […]
Read moreSummary As part of the Crossrail scheme, Ilford rail depot was subject to refurbishment and improvement works. The main issue at hand was that the current facilities original design was not suitable proposed improvements. Uretek was called to repair and upgrade foundations in an effort to withstand increased loading and improve the integrity of the […]
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