Contractor Afcons Infrastructure Ltd used a 6.65 m (21.8 ft) diameter Robbins EPB TBM to bore through in Chennai Metro, making it the contractor's third tunnel to be bored by the machine for the project.
A tunnel boring machine (TBM), also known as a "mole", is a machine used to excavate tunnels with a circular cross section through a variety of soil and rock strata.They may also be used for microtunneling.
More Tunnelling By Epb Tunnel Boring Machine In images
Design and manufacturing of pull-in riser winches for the oil & gas industry On site assembly and launch of the NFM Technologies EPB TBM for Shiraz metro (2005) Tunnel excavation with NFM Technologies slurry tunnel boring machines
CONDAT tunnel boring solutions are known for their quality and their performance. In particular, they have been implemented on sites in EPB mode working with pressures greater than 7 bar and in a wide variety of geologies. CONDAT offers a complete range of specific products and lubricants for EPB tunnel boring machines.
Reducing the Cutterhead Wear at EPB Tunnel Boring Machines ... The same EPB broke through after 3.2 km of tunnelling on the Chengdu Metro, with little visible ...
Almost always there with them: Herrenknecht experts and tunnel boring machines. With our tunnelling technology and our expertise from thousands of completed projects, we support contractors on a daily basis to successfully carry out challenging underground traffic and supply projects.
The Robbins Company revolutionized tunnel construction when our engineers designed the first hard rock TBM and we have never stopped leading the industry in innovation. From the design and stabilization of the cutterhead to the rapid removal of muck, we know what it takes to manufacture the most efficient tunneling machines.
Conventional and TBM Tunnelling Tunnelling Excavate a tunnel using machines and/or explosives, and support the tunnel using concrete and steel. Modern methods are conventional and mechanised methods Conventional tunnelling by drill-and-blast Mechnised tunnelling by tunnel boring machine (TBM) Conventional and TBM Tunnelling
tunnel boring machine (tbm) method There are two major shield methods around: earth pressure balanced (EPB) and slurry type shield machine. Selection of shield method depends on ground conditions, surface conditions, dimensions of the tunnel section, boring distance, tunnel alignment and construction period.
Earth pressure balance, or EPB, is a mechanised tunneling method in which the excavated material is used to support the tunnel face whilst it is being plasticised using foams/slurry & other additives to make it transportable and impermeable.
KAMY series of Roadheaders offers the best cutting performance in a wide range of rock formations. Equipped with geometrically optimized transverse or longitudinal cutter heads, these flexible machines can be used to excavate subway tunnels, road tunnels, railway tunnels and water tunnels without using explosives.