Laboratory evaluation of cable supports

CIM Bulletin, Vol. 84, No. 948, 1991

J.M. Goris, Spokane Research Center, U.S. Bureau of Mines, Spokane, Washington

Researchers at the U.S. Bureau of Mines are conducting research on cable-type ground supports to assess their material and support properties and to provide design criteria for implementing cable supports as a workable roof control system under various underground mining conditions. Much of this work involves laboratory assessment of the material and support properties of cable supports using both conventional and birdcage steel cables. Included in this assessment are single and double cables, effects of changes in embedment length on support strengths, water-cement ratios, use of breather tubes, and pumpability and water-bleeding properties of grouts.
Keywords: Rock mechanics, Cable support systems.