Figures index

From

A Comparative Study of Various Empirical Methods to Estimate the Factor of Safety of Coal Pillars

A. K. Verma

American Journal of Mining and Metallurgy. 2014, 2(1), 17-22 doi:10.12691/ajmm-2-1-3
  • Figure 1. Influence of w/h ratio on the post-failure stress-strain behavior of coal (Das, 1986)
  • Figure 2. Location map and stratigraphy (Mukhopadhyay, 2010) of Begonia and Bellampalli coal mines
  • Figure 3. percentage deviation from FOS of 1.0 for Begonia (failed case) and Bellampalli (stable case) by different empirical relation
  • Figure 4. Number of empirical relation predicting stable cases and failed cases at different critical FOS
  • Figure 5. Average strain and average stress curve for Begonia coal and Bellampalli coal
  • Figure 6. Variation of Begonia coal pillar and Bellampalli coal pillar FOS with w/h ratio