Probability of Stability Design of Open Pit Slopes

by Richard D. Call, Call & Nicholas Inc, Tucson, AZ, USA,



Document Type: Proceeding Paper

Part of: Rock Masses: Modeling of Underground Openings/Probability of Slope Failure/Fracture of Intact Rock

Abstract:

Uncertainty and risk have always been associated with mining. This is evidenced in the common mining terminology of proven ore, probable ore, and possible ore. From a geotechnical standpoint, the miner is often faced with working in very difficult ground conditions. He must put his excavation where the ore is, and the geological processes involved in ore placement (faulting, fracturing, and alteration) often result in what would be considered an undesirable or unacceptable site for a civil engineer planning a dam, highway cut, or other excavation. Therefore, there has been a general acceptance of a probability approach to slope design, and expressing slope stability as a probability of instability is common. Refs.

Subject Headings: Slope stability | Probability | Risk management | Geotechnical engineering | Geohazards | Excavation | Uncertainty principles

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