摘要
本文的研究表明,即使地下没有矿体,起伏地形也能产生磁电阻率(MMR)异常,同时在起伏地形条件下,电缆电流磁场不能忽略。所以,现有水平地形条件下的MMR法资料处理方法不再适用于起伏地形的情况。为此,本文着重研究了起伏地形条件下MMR法的资料处理方法,提出了MMR法的地形校正公式,并利用模型实验结果及野外实例证明了该地形校正公式在削弱地形影响、突出矿体异常方面的有效性。
This research indicates that even though there is no ore body underground, the undulatory topog- raphy can also produce the MMR anomalies defined by Professor R. N. Edwards; and the magnetic fields caused by the current flowing through the wires can not be omitted under the condition of undu- iatory topography. Therefore, the MMR data processing method in the condition of horizontal earth is no longer suitable to the situation of undulatory topography. For this reason, this paper focuses the at- ention on the MMR data processing method under the condition of undulatory topography, and puts orward the topographic correction formula of MMR method. At last, this paper demonstrates the effi- iency of the formula by means of the model experiments and a field example.
关键词
矿体
磁电阻率法
地形
勘探
magnetometric resistivity
topographic correction
model experiment results
field example
