Environmental impacts of blast-induced acceleration on slope instability at a limestone quarry |
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| Authors: | Ayhan Kesimal Bayram Ercikdi Ferdi Cihangir |
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| Institution: | (1) Mining Engineering Department, Karadeniz Technical University, 61080 Trabzon, Turkey |
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| Abstract: | The main objective of this study is to evaluate the influence of blast-induced acceleration on the stability of slopes at
Arakli-Tasonu limestone quarry where a planar shear failure has recently been observed. The planar failure occurred within
rock layers consisting of limestone and clayey limestone. The triggering mechanism of the planar shear failure was investigated
using blast-induced acceleration values obtained from 73 shots, field measurements, laboratory assessment of rock material
properties and utilizing limit equilibrium analysis. From the analysis of slope stability, the safety factor at a magnitude
of 0.106g was found to be lower than a minimum value of 1.2 in the case of a water-filled tension crack of a slope, 15 m depth. These
findings indicate that the planar shear failure was strongly influenced by the acceleration of uncontrolled blasting operations
as well as heavy rainfall. |
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| Keywords: | Acceleration Rock slope stability Limit equilibrium analysis |
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