Stability Analysis of Underground Developed Pillars of Opencast Mine Using Three-Dimensional Finite Element Method Authored

Authors

  • Gopal Rajak Indian Institute of Technology (Indian School of Mines), Dhanbad – 826004, Jharkhand
  • Sreenivasa Rao Islavath Indian Institute of Technology, Kharagpur – 721302, West Bengal
  • Hemant Kumar Indian Institute of Technology (Indian School of Mines), Dhanbad – 826004, Jharkhand

DOI:

https://doi.org/10.18311/jmmf/2022/30800

Keywords:

Developed Pillars, Finite Element Model, Displacement, Stress, Safety Factor.

Abstract

The major coal producing companies of the India are running most of the opencast mines to excavate the underground developed pillars as the underground mines possess various strata control issues, subsidence, ensures low production and makes losses. During extraction of such developed pillars, the men and machineries may trap in the developed galleries. Hence, the conditions of the pillars and galleries need to be assessed before approaching the developed pillars. In this study, a case study of Jharia Coal field is chosen for detailed stability analysis of the workings. For this, 3D numerical modelling technique is applied to assess the condition of the underground pillars and galleries. From the study, it is observed that the pillars and galleries of the workings for a maximum of 15 m from the slope surface fails severely. It is therefore, these area requires special precautions while approaching the developed coal seam/workings.

References

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Published

2022-09-16

How to Cite

Rajak, G., Islavath, S. R., & Kumar, H. (2022). Stability Analysis of Underground Developed Pillars of Opencast Mine Using Three-Dimensional Finite Element Method Authored. Journal of Mines, Metals and Fuels, 70(6), 280–287. https://doi.org/10.18311/jmmf/2022/30800

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