| 丁保艳,梁雨东,童品贤,李永恒,任康辉,胡沛青.活性炭测氡法在张掖—民乐盆地隐伏断层测量中实验条件研究[J].甘肃地质,2021,(4):75-79 |
| 活性炭测氡法在张掖—民乐盆地隐伏断层测量中实验条件研究 |
| Experimental Ｓtudy on Ｒadon Ｍeasurement with Ａctivated Ｃarbon in Ｃoncealed Ｆaults of Ｚhangye?鄄Ｍinle Ｂasin |
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| DOI： |
| 中文关键词: 活性炭测氡法 隐伏断层 地热勘查 张掖—民乐盆地 |
| 英文关键词:active carbon method for radon measurement hidden faults geothermal exploration Zhangye-Minle Basin |
| 基金项目:甘肃省地质勘查基金项目资助 |
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| 中文摘要: |
| 河西走廊蕴藏有丰富的地热水资源，以往的地质调查成果显示地热水的形成和演化与地质构造具有密切关系。活性炭测氡法在探测隐伏构造方面具有独特优势。活性炭对氡的吸附性能受到多种因素影响，在野外数据采集前需进行勘察区工作条件的测试实验。本文选择位于河西走廊中部的张掖—民乐盆地进行活性炭测氡法实验条件研究。通过实验，确定该区实验条件为：吸附剂埋深40 cm，埋藏5天；数据处理时针对农田和河滩两种地表介质要进行分区统计；该区氡异常阈值下限为均值加3 ~ 4倍方差。实验结果显示活性炭测氡法是探测该区域隐伏断裂的存在、断裂位置、走向和倾向的一种很好的手段。 |
| 英文摘要: |
| Hexi Corridor is rich in geothermal water resources. Previous geological survey results show that the formation and evolution of geothermal water is closely related to geological structures. Combined with local geological conditions, the application of activated carbon radon measurement method to detect concealed structures has unique advantages. The adsorption performance of activated carbon to radon is affected by many factors, so it is necessary to test the working conditions in this area before field data collection. In this paper, the Zhangye-Minle Basin located in the middle of Hexi Corridor was selected to study the experimental conditions of activated carbon radon measurement. The experimental conditions are determined as follows: the depth of the adsorbent is 40 cm, and it is buried for 5 days; Different surface media should be treated separately in data processing and the lower limit of the abnormal threshold is determined to be the mean value plus 3-4 times variance. The experimental results show that the method of measuring radon with activated carbon is a good means to detect the existence, location, trend and tendency of the hidden faults in this area. |
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