| 视电阻率法测井在划分多年冻土层的应用效果 |
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| 引用本文： | 龙作元.视电阻率法测井在划分多年冻土层的应用效果[J].冰川冻土,1991,13(4):343-348. |
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| 作者姓名： | 龙作元 |
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| 作者单位： | 地矿部九0六水文地质工程地质大队 |
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| 摘 要： |
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| 关 键 词： | 冻土 冻土层 界面 视电阻率 |
Effect of Identifying Permafrost by Apparent Resistivity Logging |
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| Long Zuoyuan.Effect of Identifying Permafrost by Apparent Resistivity Logging[J].Journal of Glaciology and Geocryology,1991,13(4):343-348. |
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| Authors: | Long Zuoyuan |
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| Abstract: | The principle of apparent resistivity logging is introduced in this paper. If the soil type is the same the apparent resistivity of frozen stratum is much higher than that of unfrozen stratum. Therefore, there exist jump points of the apparent resistivity both at the top and the bottom interfaces of frozen stratum. By using the turning point on jthe curve of the apparent resistivity logging obtained from the system of potential and electrode with the distance between electrodes of 0.5 m, we can identify the locations of both the top and bottom interfaces and thickness of permafrost. The effect and accuracy of using the apparent resistivity logging curve to identify permafrost and its influencing factors, such as soil properties, ice content and drilling diameter are discussed. |
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| Keywords: | apparent resistivity interface of frozen stratum turning point of the curve |
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