2002 SME Annual Meeting, Phoenix, Arizona, 25–27 February 2002
Authors: J. F. T. Agapito and L. J. Gilbride (AAI)
High horizontal stresses were recognized to impact roof stability more than 60 years ago. Since then, numerous measurements associated high horizontal stresses with difficult ground conditions. This paper presents case histories illustrating the practical usage of roof stress determinations for helping assess stability, not only in the case of high horizontal stresses but also of low stresses. Examples are given of high stresses associated with faults, mine design changes, quantification of stress shadow effect, and anistrophy. The paper concludes with a comparative evaluation on the effects of various stress fields on ground support requirements.
Downloadable PDF: Horizontal Stresses as Indicators of Roof Stability