Abstract
The Q-slope classification system is used to assess the stability of excavated rock slopes and provide an indication of long-term stable, reinforcement-free slope angles. Q-slope is based on over 500 rock slope case studies from mines, road and rail cuttings hosted in igneous, sedimentary and metamorphic rocks around the world. Q-slope can be applied for slopes ranging from less than 5 m to more than 250 m in height in both civil and mining environments.This paper describes the application of Q-slope classification system to 38 failed and intact slopes from Australian open cut coal mines. It further describes the relationship between Q-slope and Slope Stability Assessment Methodology (SSAM) ratings for stable slopes based on the available case studies.
Highlights
Engineering Geotechnical Engineering Rock Mechanics Slope Stability Q-slope, SSAM Barton, N. and Bar, N
A relationship is given for stable, quasi-stable and failed slopes based on Q-slope rating
A relationship is defined between Q-slope and SSAM (Slope Stability Assessment Methodology), two empirical classification systems for predicting slope stability
Summary
Engineering Geotechnical Engineering Rock Mechanics Slope Stability Q-slope, SSAM Barton, N. and Bar, N. New risk assessment methodology for coal mine excavated slopes. 38 failed and stable slope cases from Australian open cut coal mines have been assessed using the Q-slope classification system. A relationship is given for stable, quasi-stable and failed slopes based on Q-slope rating.
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