Microtunnelling at A1 Gas Crossing, Leeming, North Yorkshire. M158

Client
National Grid

Project
Widening of the A1

Description

Microtunnelling

Diversion of existing high pressure gas main to facilitate widening of A1(M). Installation of 65m x DN1500 pipes using our MH3 Backacter below the A1 to provide a sleeve for the new high pressure gas pipe.

Grouting of annulus between new high pressure gas main and DN1500 sleeve. Abandon 540m of Dn750 pipe of grout filling.

Ground Conditions

Sandy clay with boulders and cobbles.

SPI Ltd (part of the AEY Group) completed the piling works prior to our arrival on site.

Study Project Date  
Microtunnelling at A1 Gas Crossing, Leeming, North Yorkshire. M158 31/05/2010
Microtunnelling at Chatterley Whitfield Country Heritage Park, Stoke on Trent. M151 28/02/2010
Microtunnelling at Ferniegair WwTW - Outfall Pipeline, M74 Crossing. M138 31/01/2009
Microtunnelling at Mogden STW - East Side Enhancement Works. M139 31/10/2008

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