单斜地形情况下的磁共振测深方法反演研究

李凡, 周明, 李开天, 鲁恺, 李振宇

Inversion of magnetic resonance sounding under the condition of surface slope

LI Fan, ZHOU Ming, LI Kai-Tian, LU Kai, LI Zhen-Yu

图5 倾斜地表的情况二维核函数求取示意 a—沿倾向方向分布的二维核函数;b—沿走向方向分布的二维核函数;右侧附图为空间几何位置示意图。计算参数为:激发/接收线圈为半径10 m的圆形,2匝。地下电阻率100 Ω·m,地形倾角30°,倾向正南,地磁倾角45°N,磁偏角0°,激发脉冲矩为10 A·s

Fig.5 Schematic diagram of 2D kernel function calculation in case of inclined surface a—the 2D kernel function distributed along the dip direction; b—the 2D kernel function distributed along the trend direction. The attached subplot on the right is the schematic diagram of spatial geometric position;the calculation parameters are:Tx/Rx is a circle with radius of 10 m, 2 turns. The underground resistivity is 100 Ω·m, the terrain dip angle is 30°, the dip direction is south, the geomagnetic inclination is 45°N, and the geomagnetic declination is 0°. The excitation pulse moment is 10 A·s