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首页> 外文期刊>Pure and Applied Geophysics >Application of Short-Offset TEM (SOTEM) Technique in Mapping Water-Enriched Zones of Coal Stratum, an Example from East China
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Application of Short-Offset TEM (SOTEM) Technique in Mapping Water-Enriched Zones of Coal Stratum, an Example from East China

机译：短距TEM（SOTEM）技术在测绘煤层富水区中的应用-以华东地区为例

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摘要

Water inrush from limestone coal beds is disastrous for coal mining. In general, it is very difficult to detect such water-enriched zones because of their relatively large burial depth. In this paper, we propose a novel transient electromagnetic method (TEM) configuration, short-offset transient electromagnetic method (SOTEM). Consistency of the results obtained from SOTEM measurements in the Shandong province, East China and drilling information indicate that the proposed TEM configuration not only improves the accuracy, but also enlarges the exploration depth for detecting water-enriched areas in coal mines ranging from 1,000 to 1,200 m depth. In this region, a majority of the deep coal beds are filled with water. The SOTEM technique was successfully employed in detecting the floor of a coal seam at a depth of about 1,500 m, as well as in identifying the location of the water-saturated area. These findings were later confirmed by subsequent drillings. Thus, our study indicates that SOTEM represents a convenient and effective technique for deep mineral and hydrogeological investigations due to its high sensitivity to conductive zones (water enriched areas) and vertical resolution.
机译：石灰石煤层的涌水对煤矿开采来说是灾难性的。通常，由于这样的富水区的埋藏深度较大，因此很难检测。在本文中，我们提出了一种新颖的瞬变电磁方法（TEM）配置，即短偏移瞬变电磁方法（SOTEM）。从山东省，华东地区的SOTEM测量结果和钻探信息得出的结果的一致性表明，所提出的TEM配置不仅提高了精度，而且扩大了用于探测煤矿富水区的勘探深度，从1,000到1,200米深。在该地区，大多数深层煤层充满水。 SOTEM技术已成功用于检测约1,500 m深度的煤层底板，以及确定水饱和区域的位置。后来的钻探证实了这些发现。因此，我们的研究表明，SOTEM由于对导电区（富水区）和垂直分辨率具有很高的敏感性，因此代表了一种用于深部矿物和水文地质研究的便捷有效的技术。

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