| 从一个布井失败案例探讨多种地球物理方法综合研究 |
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| 引用本文： | 于向前,张志夫,赵义平,刘伟,魏永富.从一个布井失败案例探讨多种地球物理方法综合研究[J].水文地质工程地质,2017,0(1):31-35. |
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| 作者姓名： | 于向前 张志夫 赵义平 刘伟 魏永富 |
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| 作者单位： | 水利部牧区水利科学研究所，内蒙古 呼和浩特010020 |
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| 基金项目： | 国家自然科学基金（41402224）；中国水利水电科学研究院科研专项（MK2015J01） |
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| 摘 要： | 为探讨多种地球物理方法结合的重要性，以一个应用地球物理方法布井失败案例为研究对象，通过比较高密度电阻率法、磁共振探测以及两种方法结合的探测结果与实际钻探资料的差异，分析了每种方法的优缺点，并借助经济成本计算，讨论了多种方法结合的可行性。结果表明:高密度电阻率法与磁共振探测各有优缺点。高密度电阻率法可很好地判断地层结构的整体变化，但对岩性的推断具有较强的不确定性。磁共振探测推断的地层岩性与钻孔资料基本吻合，但无法判断是否有断层或裂隙带存在。高密度电阻率法与磁共振探测结合推断的剖面尺度上地层岩性和厚度变化与钻孔资料基本一致，是揭示地层岩性及含水层位置的有效方法，说明应重视多种方法结合的研究及应用。相比不采用任何地球物理方法或单一方法，两种方法结合的费用更低，在实际应用中具有可行性。
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| 关 键 词： | 高密度电阻率法 磁共振探测 地球物理勘探 地下水 二连浩特 |
| 收稿时间： | 2016-05-06 |
| 修稿时间： | 2016-08-05 |
The significance of systematic combination of various geophysical methods: in view of a failure example in determining well locations |
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| YU Xiangqian,ZHANG Zhifu,ZHAO Yiping,LIU Wei,Wei Yongfu.The significance of systematic combination of various geophysical methods: in view of a failure example in determining well locations[J].Hydrogeology and Engineering Geology,2017,0(1):31-35. |
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| Authors: | YU Xiangqian ZHANG Zhifu ZHAO Yiping LIU Wei Wei Yongfu |
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| Institution: | Institute of Water Resources for Pastoral area, Huhhot, Inner Mongolia010020, China |
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| Abstract: | Compared to a single geophysical method, systematic combination of various geophysical methods can make a full use of each method to obtain more accurate detections, which is not emphasized enough in prectice. To discuss the significance of the combined geophysical methods, a failure example in determination of well locations with the geophysical method is investigated. Comparison of determination results among the high-density resistivity method, magnetic resonance sounding (MRS) method, and the combination of these two methods is examined. Feasibility of the combined methods is discussed through analyzing the advantages and disadvantage of each method and calculating the economic cost. The results show that (1) The high-density resistivity method and MRS have different advantages and disadvantages, the high-density resistivity method can provide the information about the overall structure change of strata, but has the strong uncertainty in lithology determinations, and MRS can be used to the lithology determinations which are consistent with borehole data, but does not judge the existence of faults or fractures. (2) The high-density resistivity method, in conjunction with MRS, can give accurate inference of the cross-sectional thickness and lithology changes which are well fit to the borehole data. The combination of the different geophysical methods is an effective way to reveal the lithology changes and location of aquifers, which should attract more attentions. (3) Compared to a single geophysical method, the conjunct methods have lower cost and are feasible in practical applications. |
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