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A Note on Physical Modeling Approach for Assessment of Excavation Techniques

by Khosrow Bakhtar, Bakhtar Associates, Newport Beach, United States,
Hilary I. Inyang, Bakhtar Associates, Newport Beach, United States,
David A. Summers, Bakhtar Associates, Newport Beach, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1993

Abstract:

With the growing interest in utilizing underground space, the need for quantitative and qualitative assessment of excavation techniques to dictate the best choice for mining is now becoming apparent. Most permanent underground facilities are judged on the basis of their long-term performance as determined from hydrothermomechanical analyses and site stability. The requirement for long-term stability of such structures dictates that excavation induced disturbances around the opening be minimized during mining. Apart from the physical ability to remove the rock, two factors are important in the choice of the excavation method to be used in constructing a permanent underground facility such as a nuclear waste repository. The first is that the method should minimize the damage to the structural integrity of the host rock; the second is that the wall rock be left in such a condition that its structural features can clearly be seen and their locations easily documented.

Subject Headings: Underground structures | Excavation | Physical models | Scale models | Rocks | Radioactive wastes | Waste disposal

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