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Figure 1
Comparison of spectrograms for mining-induced high-energy tremors with energy of 1.9 × 109 J (left) and 1.2 × 107 J (right).
Figure 2
The dominant frequency content of LGCB mining-induced tremors in relation to their epicentral distance and energy (over 430 entries, vertical and horizontal components were studied).
Figure 3
The spectral amplitude characteristic of harmonic signals used in FEM dynamic analysis.
Figure 4
Geometry of slope used for numerical simulation.
Figure 5
Maximum element size in the dynamic model according to Kuhlemeyer and Lysmer law (blue line) and element size used for the purposes of this analysis (red bars).
Figure 6
Analysed variants of seismic load direction.
Figure 7
Matrix of numerical scenarios used for the presented research.
Figure 8
The calculated absolute values of displacement (top) and shear stress (down) changes at the base of the analysed slope depending on the used frequency.
Figure 9
The maximum calculated value of total displacement (top) and shear stress (bottom) at the base of the slope for all 180 cases.
Figure 10
The RSM surface map of the relation between dominant frequency, slope angle and displacement (left) and shear stress (right) for scenarios in which the direction of seismic load is the same as the direction of slope failure.
Figure 11
The RSM surface map of the relation between dominant frequency, slope angle and displacement (left) and shear stress (right) for scenarios in which the direction of seismic load is opposite to the direction of slope failure.
Material parameters used for numerical simulation.