Tunnels Files - Case Studies when Tunnels Were Involved

Case Study: Cutting Water Flow in Colliery Drift

American Cyanamid AM-9 Technical Manual 1960

  • Problem: In driving two drifts for this new project, several badly fissured water-bearing rock zones were intercepted. Upon completion, water at the rate of several thousand gallons per hour was entering the drifts from a subterranean water table.

Case Study: Controlling Seepage During Construction of Underground Missile Bases

American Cyanamid AM-9 Technical Manual 1960

  • Problem: With construction still in progress, numerous leaks appeared at the joints and bolt holes of corrugated steel-pipe tunnels connecting missile silos to control centers. Welding and sealing compounds failed to stop seepage.

Case Study: Consolidating Weakly Cemented Sandstone During Cross-Cut Construction

American Cyanamid AM-9 Technical Manual 1960

  • Problem: At Seafield Colliery, three cross-cuts, 16-17 feet wide by 12- feet high, were being driven horizontally through the Millstone Grit series, which contained many weakly cemented and porous sandstones.

Case Study: Stabilizing Running Sand During Pipe-Jacking

American Cyanamid AM-9 Technical Manual 1960

  • Problem: A city water supply pipeline, 126 cm. in diameter, has to be placed under the Keiyo Highway in close proximity to an irrigation channel. The water supply pipe had to be placed without disturbing highway traffic.

Magazine Article: Toronto Successfully Using Acrylamide Grout to Stop Tunnel Leaks

L.Narduzo, P.E., Leak Remediation Engineer for Toronto Transit Commission Underground Construction Magazine 2003

  • The Toronto Transit Commission (TTC) is responsible for one of the largest public transportation systems in North America. The tunnel leak remediation program was built around a solid foundation of expertise in the specialty field of grouting.

News: Working at Ground Zero

Brent Keller Water Control Quarterly 2002

  • As the recovery and rebuilding of New York City continues, new problems and challenges continue to present themselves at Ground Zero.

Ultrafine Cement Grout Seals Fissures in Salt Caverns

Water Control Quarterly 1999

  • The WIPP in New Mexico was created as an R&D facility to demonstrate safe, long-term disposal of radioactive wastes. However, before waste could be shipped to the plant, fissures in the underground salt cavern had to be sealed.

Flyer: Geotechnical Project Overview

Avanti 2011

  • A list of sample geotechnical projects. Over 90 case studies may be found at www.AvantiGrout.com.

Flyer: Stops Leaks in Concrete Structures

Avanti 2011

  • Avanti International chemical grouts can stop leaks in: cracks or joints, precast structures, dams and reservoirs, mines and tunnels, and manholes.

Magazine Article: Using Grout to Lock Pollution in Place

Jeff Griffin Underground Construction Magazine 1998

  • In Pennsylvania, Rembco used grouting to contain oil leaking under an oil refinery’s sea wall. The concrete wall had been constructed on top of old wharf piling. Over time, tidal action caused erosion, resulting in leakage at the wall’s base.

Magazine Article: Re-Emergence of Chemical Grout

Public Works 1995

  • Recent studies and over 40 years of experience indicate that America's first trenchless technology is still the best, most effective, long-term defense against infiltration.

Magazine Article: Solving Trunk Sewer Installations Across Growth Faults

Brent Pettersson, P.E., Brown & Root Rehabilitation Technology 1996

  • The City of Houston has two unique grouting projects in place that hold promise to support trunk sewer lines installed inside primary-lined tunnels crossing faults.

Magazine Article: Avanti Leads in Industry Development & Education

Allen Thomas Trenchless Technology Magazine 1994

  • Trenchless Technology - June 1994 - Avanti leads in industry development and education: In 1978 when Avanti International was formed by four rehab contracting companies, David Magill was hired as its first employee and the company's first president.

We Kept the Airplanes Flying with Chemical Grout!

Jackie Spurling, P.E., Vice President, Stanley Engineering Company, Houston, TX Avanti International 2000

  • In 1997, serious leaks developed at George Bush Intercontinental Airport in a long utility tunnel connecting a passenger terminal with the central plant.

Costs of Chemical Grout: What Would You Spend?

David Magill Avanti 2009

  • Are you spending thousands of dollars each year treating clean water? Recent studies and over 50 years of experience indicate that America's first trenchless technology is still the best, most cost-effective, long-term defense against infiltration.
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