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KAMY is the worldwide leader in manufacturing hydraulic cutters, road headers, tunnel support systems, and other specialized machinery used in the tunneling, mining, and construction industries. Through KAMY’s years of experience and innovative thinking, we can provide custom engineered solutions for nearly any project requiring rock excavation or concrete demolition.

KAMY is the leading manufacturer of roadheaders in the weight class of 13-80 tons weight. Our roadheaders offer interchangeable cutter heads, both transverse and axial and are custom engraved for each project. Our hydraulic cutters are suitable for material with uniaxial compressive strength ranging from 500 to 25,000 pounds per square inch. All of our products can be utilized in a variety of applications from rock excavation, trenching, demolition and concrete, to underwater cutting, tunneling, and scaling.

Hoosac Tunnel - Boudillion

Introduction: The Hoosac Tunnel, a railroad tunnel beneath the Berkshire Mountains in Western Massachusetts, is said to be one of the most haunted places in New England.

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North American Tunneling Conference Returns from Hiatus

The biennial North American Tunneling (NAT) Conference is returning to its normal schedule in 2018 after taking a backseat to the U.S.-hosted World Tunnel Congress 2016 in San Francisco.

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Performance prediction of hard rock Tunnel Boring Machines

More- over, the application of TBMs (Tunnel Boring Machines) in under- ground tunneling especially in urban areas has been significantly increased due to its rapid advance and safe operation.

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Variable Density TBM – Combining Two Soft Ground TBM

Variable Density TBM, a new generation of multi-mode soft ground TBM. The demand of today’s specific project conditions where frequent changes of soils, rocks and mixed face conditions of soils and rocks at the tunnel face are more and more common and thi

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The World's Largest Tunnel-Boring Machine Must Be Saved

The World's Largest Tunnel-Boring Machine Must ... The tunnel would whisk traffic underground from the ... Then she started requiring more thrust to advance, ...

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Double Shield | The Robbins Company

Tunnel Boring Machines For projects with difficult ground that still demand the speed of a Main Beam TBM Fractured rock can be an insurmountable obstacle if you buy the wrong machine.

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1 THE HISTORY OF TBM TUNNELLING IN NORAW Y

11 1 INTRODUCTION It is almost unknown to the majority in the constructi-on industry that a Norwegian designed tunnel boring machine was built and …

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Earth Pressure Balance | The Robbins Company

Tunnel Boring Machines Poor Ground, Tough Machine If the geology of your tunnel ranges from soft soils to weathered rock, then a Robbins Earth Pressure Balance Machine (EPBM) is the correct technical solution for your project. This is particularly true wh

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3 Tunnelling 1. Introduction 2. Type of Tunnels Classified by

3/24 4. Tunnel lining materials Permanent linings are required in most tunnels, always in soft ground and frequently in rock. They are required for two purposes: structurally to retain the

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BUILDING BIG: Glossary - PBS

Glossary. Abutment - the outermost end supports on a bridge, which carry the load from the deck. Aluminum - a lightweight chemical element (Al); the most abundant metallic element in the Earth's crust

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Appendix 2.2 Tunnel Construction Methods - epd.gov.hk

between two extreme conditions of hard rock and soft ground. Hence adequate structural support measures are required when adopting this method for tunnelling. Compared with bored tunnelling by Tunnel Boring Machine (see below), blasting generally results

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World’s largest tunnel-boring machine finally breaks through

SEATTLE — The world’s largest tunnel-boring machine broke through a concrete wall beneath Seattle on Tuesday to reach the end of its long, troubled journey, a milestone in a multibillion ...

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BASF Technologies - TBM - tunnelbuilder.com News

Highly efficient products optimize TBM performance. The MasterRoc product range offers a single source of solutions for shielded TBM (tunnel boring machine) excavation in soft ground and hard rock, increasing TBM advance rate and improving operational eff

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Penetration, cutter wear and rate of advance for TBM

It is necessary, in order to calculate tunnelling rates for tunnel boring machines (TBMs) in a given geology, to determine penetration, expressed in mm of advance per rotation of the cutter head. The first step produces net boring speed, stated in m/h.

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Glossary of Mining Terms

Electrical grounding — To connect with the ground to make the earth part of the circuit. Electrostatic precipitator — An electrical device for removing fine particles (fly ash) from combustion gases prior to release from a power plant's stack.

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CREG | EPB

Two Tunnel Boring Machines supplied by CREG have excavated two tunnels with a boring diameter of 6,67m in water saturated sandy mudstone, schistose mudstone, highly weathered mudstone as well as alluvium with a maximum advance rate of more than 345m/month

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Tunnel - basf.com

History is being made, and BASF plays a small but significant part in it. Seattle’s infamous two-mile-long tunnel being built underneath its downtown area to replace the city’s State Route 99 Alaska Way Viaduct is one step closer to reality. While it’s be

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Elon Musk's Hyperloop plan: New York to Washington DC

Serial entrepreneur Elon Musk is using his latest venture, The Boring Company, to build a Hyperloop in cities across the United States.

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(NTBM) Nuclear Tunnel Boring Machines – Switzerland Has

This is a $13 million tunnel boring machine ... modern tunnel-boring machines can excavate ... a tunnel-boring machine used to prepare underground nuclear ...

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Reducing the Cutterhead Wear at EPB Tunnel Boring Machines

Reducing the Cutterhead Wear at EPB Tunnel Boring Machines Protective wear plating, detection devices, and additives can minimize EPB cutterhead wear in even the most extreme conditions Mixed ground EPB cutterheads are often fitted with interchangeable kn

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