Damage to open pit slopes

Scott A. (1992). Damage to open pit slopes. In: Third Large Open Pit Mining Conference, Mackay, Aust, (219-226). August 30, 1992-September 3, 1992.

Author Scott A.
Title of paper Damage to open pit slopes
Conference name Third Large Open Pit Mining Conference
Conference location Mackay, Aust
Conference dates August 30, 1992-September 3, 1992
Journal name Third Large Open Pit Mining Conference
Series Third Large Open Pit Mining Conference
Publisher Publ by Australasian Inst of Mining
Publication Year 1992
Sub-type Fully published paper
Open Access Status Not yet assessed
ISBN 0949106712
Start page 219
End page 226
Total pages 8
Language eng
Abstract/Summary There is considerable economic incentive to increase the angle of open pit walls so as to reduce the total volume of waste to be moved to gain access to an orebody. However, a number of slope failures has increased the awareness of mine operators to the potential and consequences of slope failure. Sophisticated methods for the analysis of slope stability have been developed but they rely on an understanding of the appropriate parameters to describe the structural properties of the slope materials. Unfortunately, these properties change with time. The excavation of an open pit mine removes the constraint and weight of the overlying material and allows the newly formed slope to release previously locked in stress. The release of this stress allows the opening of joints and leads to a significant reduction in bulk modulus. The rock mass is also further affected by damage from nearby blasts. Such damage is cumulative and further reduces the modulus of the near surface material and weakens the bonds between structural elements in the slope. Field investigations by the Julius Kruttschnitt Mineral Research Centre have identified that both near and far field vibration and the presence of high pressure explosion gases contribute to slope damage. The role of each of these processes in pit wall damage and techniques to minimise their impact are discussed in this paper.
Subjects 2200 Engineering
Q-Index Code E1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Conference Paper
Sub-type: Fully published paper
Collection: Scopus Import - Archived
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Created: Tue, 28 Jun 2016, 11:21:55 EST by System User