| 乌鲁木齐碗窑沟断层电阻率成像探测与探槽剖面的对比研究 |
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| 引用本文： | 吴传勇,谭明,沈军,刘景元.乌鲁木齐碗窑沟断层电阻率成像探测与探槽剖面的对比研究[J].地震地质,2009,31(1):155-161. |
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| 作者姓名： | 吴传勇 谭明 沈军 刘景元 |
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| 作者单位： | 新疆维吾尔自治区地震局,乌鲁木齐,830011 |
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| 摘 要： | 利用电阻率二维层析成像方法对碗窑沟断层进行了试验探测,获得了该断层典型的电阻率成像异常特征:地层电性结构存在强间断面,呈现明显的"二分"现象,高、低阻间的梯度界线倾向低阻区。在对乌鲁木齐地区其它具有类似构造特征的断层进行探测时,电阻率成像剖面呈现出相似的异常特征,说明这一异常特征可以作为乌鲁木齐地区判定断层的重要标志和依据。乌鲁木齐地区多为高角度的逆冲断层,此类构造电阻率成像剖面中高、低阻之间的界线与断层并不重合,断层处于高阻区域,倾向与视电阻率衰减梯度线倾向相反,断层的真实位置与图像最上部高、低电阻转折的拐点部位最接近
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| 关 键 词： | 碗窑沟断层 电阻率成像 探槽 乌鲁木齐 |
| 收稿时间： | 2009-01-22 |
COMPARATIVE STUDY ON ELECTRICAL IMAGING AND TRENCHING OF THE WANYAOGOU FAULT IN URUMQI |
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| WU Chuan-yong,TAN Ming,SHEN Jun,LIU Jing-yuan.COMPARATIVE STUDY ON ELECTRICAL IMAGING AND TRENCHING OF THE WANYAOGOU FAULT IN URUMQI[J].Seismology and Geology,2009,31(1):155-161. |
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| Authors: | WU Chuan-yong TAN Ming SHEN Jun LIU Jing-yuan |
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| Institution: | Earthquake Administration of Xinjiang Uyger Autonomous Region;Urumqi 830011;China |
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| Abstract: | The Wanyaogou Fault dislocates the Jurassic sandstone.The tilted bedrock becomes a natural barrier to the groundwater,and a water-rich stratum formed in the footwall which caused obvious resistance difference between the two walls of the fault.The electrical imaging is an effective way to detect the fault on this condition.The experimental electrical resistivity tomography survey was conducted to detect the Wanyaogao Fault.The results of 2-D resistivity inversion indicate that the electrical structures on b... |
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| Keywords: | Wanyaogou Fault electrical imaging trench Urmuqi |
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