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Tunneling

New Crossover Series of TBMS

Robbins announced its Crossover Series of TBMs, a line of field-tested, rugged Dual Mode-type machines. Crossover TBMs feature aspects of two TBM types, and are ideal for mixed ground conditions that might otherwise require multiple tunnelling machines. The XRE (standing for Crossover Rock /EPB) is the most common type of hybrid machine, and features characteristics of Single Shield Hard Rock machines and EPBs for efficient excavation in mixed soils with rock.

Large-Scale Projects In Small Diameters Win GSTT Award 2015.

Two projects in which microtunnelling machines from Herrenknecht are driving new sewers have been awarded the "GSTT Award 2015" by the German Society for Trenchless Technology e.V. (GSTT). The special award "International Project" was given to the National Water Company of Saudi Arabia. At their unusual construction site in Mecca two Herrenknecht EPB shields with an individual remote monitoring system are in use. The Emschergenossenschaft received the GSTT Award “Gold” for a construction of a section between Dortmund and Bottrop as a part of the Emscher renaturation. Since 2013 several Herrenknecht utility machines have been driving a new sewer system there.

5200 Pump Unit for the Akkerman Tunnel Boring System

Akkerman has introduce the 5200 Pump Unit, the most essential element of the Tunnel Boring System. This flagship product has been improved in several essential areas while retaining the best qualities of its predecessors, to achieve optimal pipe jacking performance.

World Record Set Las Vegas Tunnelling Project Withstands Highest Pressurized Conditions

Las Vegas, the glittering city of luck with its fascinating fountains, draws 90 percent of its water from Lake Mead. The largest reservoir in the United States is fed by the Colorado River. The areas around Las Vegas, however, are taking more from the lake than flows into it as snow melt and rain water from the Rocky Mountains. During the 14 years of drought, the water level has dropped by 35 metres. The two existing water intakes for the Las Vegas Valley are in danger of running dry, and Intake No.1 could be at risk next year. It is now only 24 feet (7 metres) below the lake level.

Arup's Billy Bishop Toronto City Airport Pedestrian Tunnel Wins Canadian Tunnelling Association Award

Arup, a multidisciplinary engineering and consulting firm with a reputation for delivering innovative and sustainable designs, has announced that the Billy Bishop Toronto City Airport Pedestrian Tunnel project has won the Tunnelling Association of Canada (TAC) 2014 Canadian Project Award. A ceremony was held at the Sheraton Wall Centre in Vancouver on Monday evening, October 27th.

High Performance Fire Protection Ideal for Use in Tunnels

Morgan Advanced Materials has made available FireMaster FireBarrier 135 sprayed refractory cement, offering superior fire protection and simple, cost-effective installation. FireMaster FireBarrier 135 is ideal for concrete tunnel lining fire protection, and the fire protection of ventilation shafts, escape tunnels and refuges as well as critical systems such as water mains and communication cables.

Newly developed MH Box Machine

The demand for new underground infrastructures for pedestrians and cyclists is increasing along with the rapidly growing traffic load in large and megacities. This makes it necessary to cross beneath a great number of busy junctions, expressways or railway routes at short distances and at a low depth. The high traffic burden at these intersections makes aboveground interventions extremely difficult or even impossible without a great deal of additional work and expense.

Toronto tunnel project helps meet increased demand for power

The need to replace aging underground infrastructure has led Hydro One Networks Inc. and Toronto Hydro to join forces to upgrade the existing 115 kV transmission lines in the midtown power corridor in Toronto. The project involves installing an additional 115 kV circuit between the Leaside Transformer Station and the Birch Ave. junction.

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