Geotechnical Files

Sealing Sandstone to Permit Shaft Sinking

American Cyanamid AM-9 Technical Manual 1960

  • In one of the deepest drilling operations in British coal mining history, plans called for the sinking of two 3,000-foot shafts, one to be used as a main coal-hoist shaft with skips, the other to house a conventional cage hoist.

Constructing Grout Curtain for Dam

American Cyanamid AM-9 Technical Manual 1960

  • The Columbia River Valley at the dam site is a wide canyon dividing the Columbia Plateau on the east from the Entiat Mountains on the west.

Long-Term Performance of Grouting Around a Flood Control Bulkhead in Shoals, Indiana

Avanti 2006

  • The long-term performance of the end-product is more important. For this reason, we have re-visited an 18-year-old mine grouting project that took place to prevent the flooding of a gypsum mine in Shoals, Indiana.

Comparison of Chemical Grout Properties

David Magill and Richard Berry Paper Presented at Geo-Denver 2007 2006

  • This paper is about the current uses of chemical grouts, the economics of product use, and a discussion of where specific products within a category can be used.

Sealing Leaks in Coal Mine Slope

American Cyanamid AM-9 Technical Manual 1960

  • During the winter months, small drips from the roof froze into large ice masses, obstructing the passage of men and equipment, and becoming a safety hazard.

Repairs to Leaking Earthen Dam

American Cyanamid AM-9 Technical Manual 1960

  • Indian Kill Reservoir is a man- made lake (capacity 200 million gallons.) serving a portion of Sterling Forest, a community developed for scientific research, education, and suburban living.

Grouting Foundation for Dam Construction

American Cyanamid AM-9 Technical Manual 1960

  • A 300-foot rockfill dam with a central impervious core and a crest length of 870 feet was being built on a generally sound granite foundation, except on the upper right abutment where the rock was completely weathered to an in situ soil.

Shutting Off Water During Tunneling

American Cyanamid AM-9 Technical Manual 1960

  • A six- foot diameter tunnel, 139 feet long, had to be driven through a cinder-slag fill with voids estimates as high as 70 percent. The tunnel dropped 25 feet over its length and terminated in a cofferdam about 23 feet below river level.

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.

Grouting Jointed Rock in Dam Foundation

American Cyanamid AM-9 Technical Manual 1960

  • Problem: Severe weathering along calcite veins, joints, and cracks, as well as the presence of three fault zones, have formed seepage channels which could endanger the performance of the dam.

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.

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.

Improving Oil Production in a Water Flood Cave

American Cyanamid AM-9 Technical Manual 1960

  • Problem: Water was pumped down a well to displace petroleum from the oil-bearing formation into an oil producing well.

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.

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.
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