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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.

Tunnel boring machine performance prediction with

Accurate performance prediction is one of the main concerns in determining the construction time of mechanical excavators such as tunnel boring machines (TBM). A good overview of well-known TBM performance …

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Elon Musk's first SpaceX tunnel shown in exclusive photos

Herrenknecht AG, one of the world's biggest tunnel-boring machine makers, says it is providing machines for as many as 100 projects annually, up from 20 some 15 years ago.

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Alaskan Way Viaduct - Tunneling

The SR 99 Alaskan Way Viaduct, an elevated concrete structure built in the 1950s and vulnerable to earthquakes, is being replaced with a 1.7-mile tunnel running beneath downtown Seattle. Replacing the viaduct with a tunnel allows the highway to remain ope

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Applications of NTNU/SINTEF Drillability Indices in Hard Rock

2.3 Cutter Life Index. The Cutter Life Index (CLI) is assessed on the basis of the Sievers' J-value and the Abrasion Value Steel (AVS). CLI expresses life in boring hours for disc cutter rings of steel for tunnel boring machines.

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A model of tunnel boring machine performance | SpringerLink

A mathematical model for the performance of a tunnel boring machine ... Keywords Tunnel boring ... Point Load Test index for tensile rock strength, Pa.

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A model for the prediction of tunnel boring

cutter wear, machine operation, continuous mucking, and support installations requires an evaluation of many factors affecting TBM performance. Tunnel boring is a complex process and it is difficult to account for all rock properties in a single formula.

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First mega TBM arrives for Sydney Metro

First mega TBM arrives for Sydney Metro 17 Aug 18 Delivery has taken place of the first of five 1,100t tunnel boring machines (TBMs) that will be used to build the Sydney Metro in Australia.

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TBM Performance Prediction in Rock Tunneling Using Various

TBM Performance Prediction in Rock Tunneling Using Various ... tunnel boring machine ... Punch test index or PTI, ...

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latest tunnel boring machinesmm keyword index; latest tunnel boring machinesgeotechnical engineering; latest tunnel boring machinescomments about …

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Tunnel Boring Machines; ... view and lookup an index of 2017 NAICS codes in ... in all of the issues of the Meccano Magazine in alphabetic order by keyword. Get ...

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