修正的DOI方法在确定直流电法有效探测深度中的应用

发布时间：2018-05-10 05:04

本文选题：比例DOI法 + 有效探测深度　；参考：《地球物理学进展》2017年02期

【摘要】：直流电法有效探测深度的确定是地球物理电法研究的焦点,其与最终数据解释的可靠程度紧密相连,不准确的探测深度可能会造成漏解释或过度解释.修正的DOI(Depth of Investigation)方法被用于确定直流电法的有效探测深度.该方法是在DOI法的基础上提出,针对原始采集数据的两个不同电阻率参考模型的反演结果,利用统计学方法和无约束非线性优化方法处理数据,最终得到透明索引指标,从而获得有效探测深度边界.该方法有效规避了人为选用截断阈值来确定有效探测深度的缺点.在工程实例应用上也取得了较好的效果,这对未来直流电法有效探测深度的确定具有重要应用价值.
[Abstract]:The determination of the effective detection depth of the direct current method is the focus of the geophysical research. It is closely connected with the reliability of the final data interpretation. The inaccurate detection depth may cause leakage interpretation or excessive interpretation. The modified DOI (Depth of Investigation) method is used to determine the effective detection depth of the direct current method. This method is in D On the basis of the OI method, according to the inversion results of two different resistivity reference models of the original data, the statistical method and the unconstrained nonlinear optimization method are used to process the data, and the transparent index is finally obtained. Thus the effective detection depth boundary is obtained. This method can effectively avoid the artificial selection of the truncation threshold to determine the validity. The shortcoming of detecting depth has also achieved good results in engineering application, which is of great application value to the determination of effective detection depth of DC electric method in the future.

【作者单位】：中国矿业大学深部岩土力学与地下工程国家重点实验室;中国矿业大学资源与地球科学学院;
【基金】：国家自然科学基金委员会与神华集团有限责任公司联合项目(U1261202) 中国留学基金委CSC联合资助
【分类号】：P631.3

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