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Tilt-Depth以及其相关改进方法最初是基于磁异常基本公式推导,一直应用于磁法勘探领域。自2012年以来,不断有学者探讨重力场Tilt-Depth方法,但对重力场与磁场Tilt-Depth方法之间的关系研究较少,存在一些不同认识。梳理了重磁场之间Tilt-Depth方法的联系与区别,得出了Tilt-Depth方法在重力场中相比磁场高一阶导数的结论。验证了方法的有效性,通过对海南石碌矿区重力异常处理,提取了矿体的边界信息,突出了深部隐伏矿体产生的弱异常的边界范围,获取了矿体的位置及埋深参数,通过与已知地质剖面、反演剖面的对比,证实了重力场Tilt-Depth结论的正确性与有效性。
Tilt-Depth and its related improvement methods were originally derived from the basic formulas of magnetic anomalies and have been used in the field of magnetic prospecting. Since 2012, some scholars have been discussing the Tilt-Depth method of gravitational field. However, there are few researches on the relationship between the gravitational field and the Tilt-Depth method. There are some different understandings. The connection and difference of Tilt-Depth method between heavy and magnetic fields are combed, and the conclusion that Tilt-Depth method has higher first order derivative than magnetic field in gravitational field is obtained. The validity of the method is validated. Through the gravity anomaly treatment of Shilu mining area in Hainan, the boundary information of the ore body is extracted, the boundary area of weak anomalies produced by the deep concealed orebody is highlighted, the location and depth of the ore body are obtained, Through the comparison with known geological sections and inversion sections, the correctness and validity of the conclusion of Tilt-Depth in gravity field are confirmed.