| 综合物探方法在内蒙火区探测中的应用 |
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| 引用本文： | 田卫东,郭崇光.综合物探方法在内蒙火区探测中的应用[J].中国煤炭地质,2012(4):62-67. |
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| 作者姓名： | 田卫东 郭崇光 |
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| 作者单位： | 山西省煤炭地质水文勘查研究院,山西太原030006 |
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| 摘 要： | 煤层在自燃过程中,煤层上覆岩石受到高温烘烤,在磁性、导电性和温度等方面将发生显著的变化。为此,采用以磁法为主的综合物探方法,能从不同的角度提取火区特征信息,各种方法互相验证,可提高圈定火区范围的准确性和勘探效率。大量勘探实例表明,磁法是目前圈定火区范围的有效方法之一,用正磁异常划分火区有效可靠;火区范围存在高氡值异常;测温受火区深度的影响较大,明火和近地表火区反映明显。
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| 关 键 词： | 火区 综合物探 磁法 自然电位法 测温 测氡 |
Application of Integrated Geophysical Prospecting in Inner Mongolia Spontaneous Combustion Zone |
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| Tian Weidong,Guo Chongguang.Application of Integrated Geophysical Prospecting in Inner Mongolia Spontaneous Combustion Zone[J].Coal Geology of China,2012(4):62-67. |
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| Authors: | Tian Weidong Guo Chongguang |
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| Institution: | (Shanxi Provincial Coal Geological and Hydrogeological Exploration Research Institute,Taiyuan,Shanxi 030006) |
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| Abstract: | During the spontaneous combustion process,coal seam overlying rocks are subjected to the high temperature bake-out,thus significant changes of magnetism,electrical conductivity and temperature will be happened.Therefore,using the integrated geophysical prospecting with stress on the magnetic method can pick up combustion zone diagnostic information from different points of view.Mutual authentication of methods can improve accuracy and efficiency of combustion zone limits delineation.A mass of prospecting examples have demonstrated that magnetic method is one of effective methods to demarcate combustion zone limits.Using the positive anomalies to definite combustion zone is effective and reliable;high radon anomaly is existed in the combustion zone;temperature is largely impacted by combustion zone depth,naked fire and near surface combustion zone have distinct reflections. |
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| Keywords: | spontaneous combustion zone integrated geophysical prospecting magnetic method spontaneous potential method temperature measurement radon measurement |
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