kamy roadheaders

Tel No. +86-21-57674157

large diameter rock tunnels

Quality Inspection

Technology led the establishment of the quality assurance after-sales service, improve the management system.

Production License

Production license of the product ensure that the license number, approval date and expiration date.

Product Packaging

Product packaging in line with national regulations, due to packaging damage caused by the products borne.

After-sales Service

Any difficulties encountered by customers, we will do our best in the first time to provide perfect service.

Modern large diameter rock tunnels - TunnelTalk.com

Modern large diameter rock tunnels Apr 2010. Lok Home, President, The Robbins Company Recent experience and development of hard rock tunnel boring on most large diameter tunnels, especially above 8m in diameter, has shown that improved ground support is …

MODERN LARGE DIAMETER ROCK TUNNELS - The Robbins …

MODERN LARGE DIAMETER ROCK TUNNELS . Lok Home, President, The Robbins Company . SUMMARY . Recent experience and development of Hard Rock Tunnel Boring on most large diameter tunnels, especially above 8m in diameter, has shown that improved ground support is a

Large diameter rock tunnels - TunnelTalk

Large diameter rock tunnels - TunnelTalk 24/04/10 11:53 AM http://tunneltalk.com/Large-diameter-rock-tunnels-Apr10-Robbins.php Page 3 of 5 Rock fallout during boring

Tunnel - Wikipedia

Our large-diameter tunnel expertise makes SAK the right choice for a range of sewer line, water line or storm drain installations as well as projects outside the scope of auger-boring or conventional open-trench construction. ... utility, and pedestrian tunnels. Soft-Rock and Hard-Rock Tunneling: Soft rock comes in many forms, including ...

Large Diameter Tunneling | SAK Construction

Recent experience and development of Hard Rock Tunnel Boring on most large diameter tunnels, especially above 8m in diameter, has shown that improved ground support is a prerequisite to improved monthly advance rates.

Modern Large Diameter Rock Tunnels - UNITRACC

Our large diameter tunneling services can accommodate any utility service needs that require a tunnel boring machine for underground construction. Description: To create large bores in virtually any soil condition (including solid rock) typically requires large diameter tunneling. One of …

Specialized Services Company » Large Diameter Tunneling

Large Diameter Rock Bits are engineered for customer requirements. Concave sructure with quide nose give ecxellent accuracy in chanllenging jobs with high demands for hole straightness. PPV rock bits are available from 300mm to 1250mm diameter and for all major shank designs.

Tunnel boring machine - Wikipedia

The “invention” of a machine capable of excavating and supporting large-diameter tunnels in hard rock was one of the greatest achievements in the history of tunneling, and to say that this method of rock excavation revolutionized the design and construction of tunneling projects would be an understatement.