Affiliations 

  • 1 Department of Petroleum and Mining Engineering, Faculty of Civil Engineering, MIST, 1st Floor, General Mustafiz Tower, Mirpur Cantonment, Dhaka, 1216, Bangladesh. badrul.alam@pme.mist.ac.bd
  • 2 Faculty of Engineering, Hokkaido University, Sapporo, 060-8628, Japan
  • 3 Department of Petroleum and Mining Engineering, Faculty of Civil Engineering, MIST, 1st Floor, General Mustafiz Tower, Mirpur Cantonment, Dhaka, 1216, Bangladesh
  • 4 Institute of Technology of Cambodia, P.O. Box 86, Phnom Penh, 12156, Cambodia
  • 5 School of Civil Engineering, Universiti Teknologi Malaysia, 81310, Johor Bahru Johor, Malaysia
Sci Rep, 2022 08 30;12(1):14800.
PMID: 36042276 DOI: 10.1038/s41598-022-19160-1

Abstract

It is essential to predict the mining-induced subsidence for sustainable mine management. The maximum observed subsidence having a noticeable areal extent due to Northern Upper Panels (NUP) and Southern Lower Panels (SLP) at the Barapukuria longwall coal mine is 5.8 m and 4.2 m, respectively, after the extraction of a 10 m thick coal seam. The mining-induced subsidence was simulated by the Displacement Discontinuity Method. The numerical model considered the effects of the ground surface, mining panels, faults, and the dyke. The predicted and the observed subsidence due to the mining of NUP and SLP were compared by varying Young's modulus, and the 0.10 GPa Young's modulus was found to be the best match in the geo-environmental condition. The effects of the faults and the dyke in the calculation were negligible. Future subsidence was predicted by considering 30 m extraction of the thick coal seam as 15.7-17.5 m in NUP and 8.7-10.5 m in SLP. The vulnerable areas demarcated considering the tilt angle and extensile strain might extend up to the coal mine office area and some villages.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.