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<p>One of the primary factors causing major disasters in coal mine safety accidents is the flooding of the goaf. It can be especially dangerous when the upper goaf is flooded, and mining operations continue in the underlying coal seam. Detecting the flooded goafs is challenging, especially in inclined coal seams with significant topographic relief. This study utilizes the semi-airborne transient electromagnetic method (SATEM) to investigate and the presence of subsurface goaves. Apparent resistivity maps and profiles are generated through data processing. The analysis results demonstrate the effectiveness of the SATEM survey in delineating goaf boundaries and the presence of water accumulation. Fractures and bedding planes are clearly depicted in the profiles. Based on hydrogeological conditions and the SATEM results, inferences can be made regarding aquifer boundaries. The investigation findings were validated through drilling. We integrating geological, hydrological, and drilling to reveal the sources of water accumulation in the goaf, ultimately establishing of a water accumulation model for the study area. The obtained water accumulation information in the goaf is critical for mine planning and production. This study provides valuable experience in detecting water accumulation in goaf areas of inclined coal seams within a complex topographic context characterized by gullies and ridges.</p>

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Assessing goaf in steep coal seam over complex topography using semi-airborne transient electromagnetic method: a case study in Xinjiang China

  • 期刊论文

  • 发表日期：

    2025年5月29日

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  • Hualiang Zhao,
  • Huaifeng Sun,
  • Yingying Zhang,
  • Rui Liu,
  • Lei Chen,
  • Shangbin Liu

摘要

One of the primary factors causing major disasters in coal mine safety accidents is the flooding of the goaf. It can be especially dangerous when the upper goaf is flooded, and mining operations continue in the underlying coal seam. Detecting the flooded goafs is challenging, especially in inclined coal seams with significant topographic relief. This study utilizes the semi-airborne transient electromagnetic method (SATEM) to investigate and the presence of subsurface goaves. Apparent resistivity maps and profiles are generated through data processing. The analysis results demonstrate the effectiveness of the SATEM survey in delineating goaf boundaries and the presence of water accumulation. Fractures and bedding planes are clearly depicted in the profiles. Based on hydrogeological conditions and the SATEM results, inferences can be made regarding aquifer boundaries. The investigation findings were validated through drilling. We integrating geological, hydrological, and drilling to reveal the sources of water accumulation in the goaf, ultimately establishing of a water accumulation model for the study area. The obtained water accumulation information in the goaf is critical for mine planning and production. This study provides valuable experience in detecting water accumulation in goaf areas of inclined coal seams within a complex topographic context characterized by gullies and ridges.