Whitepapers

discover our thought leadership publications

Here we have gathered some of our top whitepapers with compelling thought-leadership and innovative insight across a range of water management topics.

Simply select the Whitepaper you would like to read, fill in your details and you’ll receive an email link to access the whitepaper online. Where applicable, you’ll also be able to link directly to the full, original published paper.

In-Tunnel Dewatering for a Cross Passage in London

The Crossrail project in London comprises twin TBM driven railway tunnels. The scheme includes several short cross link tunnels between the TBM drives to house switch gear, sumps and for access. 

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    Multi-Aquifer Pressure Relief in East London

    Two adjacent deep shafts in east London involved excavation to 30 m below standing groundwater level and required temporary control of pressures in the Lower Aquifer below the London Clay.

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      Sub-Surface Dewatering for an Inclined SCL Tunnel

      This paper describes the development and implementation of an inclined sub-surface ejector well scheme which was used to target and depressurise the channel sands.

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        Construction of a Deep Shaft for Crossrail

        This paper describes the construction of an 8·2 m diameter by 37·5 m deep shaft. The shaft is part of the Crossrail works in central London, and is fonned of  precast  concrete  segments.

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          Geotechnical Engineering for the Medway Tunnel

          The paper describes the ground investigation and discusses how the design  accommodated the ground conditions to allow the tunnel and approach structures to be safely and efficiently constructed. 

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            Construction Dewatering in Northern Province Chalk

            This case study provides a rare insight into the hydrogeology of Northern Province Chalk Group. Installation of a new 6 km services pipeline under the Humber Estuary required the construction of a launch pit and a reception shaft for the TBM drive each side of the estuary.

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              Soil Characterisation and Construction of Deep Excavations in High Permeability Gravels in Cork, Ireland

              This paper describes ground conditions and difficulties encountered in constructing deep excavations in highly permeable fluvioglacial gravels in Cork city, southern Ireland.

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