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Year 2026
 
Vol 4, Issue 67, [08 - 2026] - Early View

Geological characterization and mining potential of syncline-shaped seam in the Quang Ninh coal basin: from geological analysis and practical mining solutions

DOI:10.46326/JMES.2026.67(4).02

  • Affiliations:

    Quang Ninh University of Industry, Quang Ninh, Vietnam

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  • Received: 5th-Jan-2026
  • Revised: 11st-Apr-2026
  • Accepted: 24th-Apr-2026
  • Online: 1st-Aug-2026
Pages: 2 - 16
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Abstract:

The bottom areas of synclinal-shaped seams represent coal-bearing zones with significant resource potential. Under complex geological and hydrogeological conditions, they represent significanttechnical challenges for underground coal mining. This study investigates the impacts of synclinal bottom geometry on mining organization in underground coal mines in the Quang Ninh coal basin, Vietnam. An integrated methodology combining geological analysis, field investigation, and comparative assessment was employed to link synclinal-shaped seam geometry with mining layout, extraction systems, ventilation, and drainage conditions. Compared with seam limbs, the bottom areas of synclinal-shaped seams constrain mining organization and limit the applicability of high-level mechanization due to their unfavorable seam geometry, strong dip-angle variability, concentrated mine water, gas accumulation, and reduced strata stability. According to our comparative analysis, syncline-shaped seam accessed from the bottom and equipped with gravity-driven drainage systems generally achieve higher mining efficiency and lower hydro-gas risks. For closed bowl-shaped syncline seam, they tend to suffer from severe drainage difficulties and increased coal losses. A classification framework to guide the selection of appropriate development schemes and mining solutions for different syncline-shaped seam types is recommended using syncline-shaped seam morphology and scale. The findings highlight the necessity of treating the bottom areas of synclinal-shaped seams as special mining units and provide a scientific basis for optimizing underground coal mining in geologically complex and deepening mining conditions.

How to Cite
Hoang, T.Hung 2026. Geological characterization and mining potential of syncline-shaped seam in the Quang Ninh coal basin: from geological analysis and practical mining solutions (in Vietnamese). Journal of Mining and Earth Sciences. 4, 67 (Aug, 2026), 2-16. DOI:https://doi.org/10.46326/JMES.2026.67(4).02.
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