Assessment of conventional methodologies for joint roughness coefficient determination
Conference
·
OSTI ID:145465
- Southwest Research Institute, San Antonio, TX (United States)
A numerical description of rock joint roughness is necessary to describe adequately the pseudostatic and dynamic rock-joint behavior. The most commonly used measure of joint roughness in rock engineering practice is the joint roughness coefficient (JRC), proposed by Barton and adopted by the International Society for Rock Mechanics. Three basic methods for the determination of JRC have been proposed by various investigators - a tilt test on rock joints as proposed by Barton and Choubey, using an average deviation from the center line about which roughness is measured, and using the theory of fractal geometry. These methods are evaluated in this paper to determine their appropriateness for use in the assessment of rock-joint behavior of Apache Leap tuff joints by comparing the estimates using these methods to the JRC values back-calculated from the laboratory direct shear test results.
- Research Organization:
- Wisconsin Univ., Madison, WI (United States)
- OSTI ID:
- 145465
- Report Number(s):
- DOE/ER/14352--1; CONF-930644--Vol.2; ON: DE94014602; CNN: Contract NRC-02-88-005
- Country of Publication:
- United States
- Language:
- English
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