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Sat 7 Jun 2014 10:47 AM

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New boring machines to boost Doha Metro construction

Qatar Rail says it has taken delivery of four more machines and is awaiting arrival of 16 more for project

New boring machines to boost Doha Metro construction

Qatar Railways Company, the firm overseeing the construction of the country's rail network, has received four more tunnel boring machines to work on phase one of the Doha Metro project.

The four machines were manufactured by Germany's Herrenknecht and will be used for the Red Line North and South Underground projects, a statement said.

Qatar Rail said it is awaiting the delivery of a further 16 boring machines which will arrive in a Qatar over the coming months, to be used between the Red Line North, Red Line South, Green Line and Gold Line Underground projects.

Each machine will travel a distance of between 7-9km and will take approximately two years to complete their respective journeys.

Their average speed will be between 12m per day to 21m per day, depending on ground conditions. Daily excavation quantity will be over 600 cubic metres, with an estimated predicted total excavation quantity of over 5,000,000 cubic metres.

The scope of work for Red Line North Underground comprises the design and construction of about 13.4km of twin-bored tunnel, including seven underground stations, between the proposed Msheireb Underground Station and Doha Golf Course via Doha West Bay.

The tunnels will be built at an average depth of 20 metres below ground.

Red Line South Underground extends from Msheireb in the North to Hamad International Airport in the South and its scope of work includes seven underground stations and the design and construction of about 14km of twin-bored tunnel to be built at an average depth of 25 metres below ground.

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