| 垂向电导度的测量及在水位异常判别中的作用 |
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| 引用本文： | 吕惠琴,黄振义.垂向电导度的测量及在水位异常判别中的作用[J].华北地震科学,1994,12(2):60-65. |
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| 作者姓名： | 吕惠琴 黄振义 |
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| 作者单位： | 天津市地震局，天津市汉沽地震办公室 天津300201，300480 |
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| 摘 要： | 为剖析咸水进水位异常，我们对位于唐山地震区附近的双桥１号井，双桥２号井及东台子井进行了多次井内垂向电导度的测量。在１９９１年１０月５日宁河ＭＬ４．６级地震及１９９２年７月２２日宁河ＭＬ４．９级地震前井下水电导度特别是含水层部位水电导度都曾出现过高值异常，这对于判别不异常是由于咸水层压力变化还是外来水的侵入是一种行之有效的简便的监测方法。
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| 关 键 词： | 垂向电导度 水位异常 地震前兆 |
MEASUREMENT OF VERTICAL CONDUCTIVITY AND ITS APPLICATION IN RECOGNITION OF ABNORMAL WATER LEVEL IN SHUANGQIAO AND DONGTAIZI WELLS |
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| Lu Huiqin Huang Zhenyi.MEASUREMENT OF VERTICAL CONDUCTIVITY AND ITS APPLICATION IN RECOGNITION OF ABNORMAL WATER LEVEL IN SHUANGQIAO AND DONGTAIZI WELLS[J].North China Earthquake Sciences,1994,12(2):60-65. |
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| Authors: | Lu Huiqin Huang Zhenyi |
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| Abstract: | In order to analyse the abnormal water level in saltwater well, we measured vertical conductivities for many times in wells of Shuangqiao No. 1, Shuangqiao No. 2 and Dongtaizi which all lie near Tang-shan seismic region. Before Ninghe ML4. 6 earthpuake on October 5, 1991 and Ninghe ML4. 9 earthquake on July 22,1992, the water conductivities in the wells, especially in aquifer position,showed high abnormal values. This is an effective and simple monitoring method for recognizing water level anomaliesinduced either by water pressure changes of saltwater layer or by the ingress of water from otherplaces. |
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| Keywords: | Shuangqiao well vertical conductivity anomaly of water level |
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