Characteristic of geological anomaly detected by combined geophysical methods in a deep laneway of coal mine
Characteristic of geological anomaly detected by combined geophysical methods in a deep laneway of coal mine
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DOI：
10.1016/j.proeps.2009.09.145
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发表时间：
2009-09
期刊：
影响因子：
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通讯作者：
Sheng-dong Liu;Ping-song Zhang;Cao Yu;Wang Bo
中科院分区：
文献类型：
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作者：
Sheng-dong Liu;Ping-song Zhang;Cao Yu;Wang Bo
深部巷道掘进安全往往受到巷道端部前方诸多地质异常因素的影响。岩体性质的变异性、断层等地质异常与岩体中的地下水有关。因此，为了避免矿井被淹，有必要采用多种物探方法对巷道端部前方的地质异常进行探测，指导煤矿巷道掘进过程。通过淮南顾桥煤矿-780-南段2000 m巷道地质勘探与各种物探方法的对比分析，结果表明：1)巷道中的反射地震波可以探测和预测岩性和断层的变化，远距离预测和高分辨率探测能力是反射波法的主要特点，地震波的频谱特征可以区分岩性的变化; 2）瞬变电磁法（TEM）对解决巷道掘进工作面前方围岩含水量的变化非常敏感，巷道直流电阻率法能较好地识别岩性变化与含水的相对特征;第三章直流电阻率法可以较好地识别岩性变化与含水的相对特征在巷道里。在有限的巷道空间内，采用多种物探方法联合分析是探测巷道端部超前地质异常和水文地质的有效方法，为深部巷道安全高效掘进提供了有力的技术保障。
The driving safety in deep laneway is often affected by many geological anomaly factors in ahead of a laneway end. The variability of rock properties, faults and so geological anomaly have relations with groundwater in rock mass. Therefore, it is necessary to employ various geophysical methods for geological anomaly detection in the front of laneway end in order to avoid mine inundation, which guides the process of driving in a laneway of coal mine. According to the comparative analysis between geological exploration and various geophysical methods used in the 2000m-passageway of −780-south section in Guqiao coal mine of Huainan, the result shows as follows. 1) The abnormity of lithology and faults can be detected and forecasted by the reflected seismic wave in the laneway, long distance prediction and high resolution detecting ability are the main characters of the reflected wave method, and the spectrum characteristics of seismic wave can distinguish the change of lithology; 2) The transient electromagnetic method (TEM) is very sensitive to solve the change of aquosity in terrane ahead of the laneway heading face, and the relatively characteristics between lithology change and its containing water can be identified finely through the direct current resistivity method in laneway; 3) The relatively characteristics between lithology change and its contained water can be identified finely through the direct current resistivity method in laneway. In a limited space of laneway, the combined analysis method using variety of geophysics methods are an effective method to detect geological anomaly and hydrogeology ahead of the laneway end, which can provide a powerful technology for safety and efficient driving in a deep laneway.