方型回线辐射电磁场特征物理模拟实验研究

基于电磁场扩散理论,依据物理模拟相似性准则,研究多匝方型重叠回线辐射电磁场特征。模拟结果表明:线圈中心1/3范围内,磁力线近似垂直于线圈平面分布,线圈内其它范围,磁力线小角度偏离线圈平面法线方向,线圈边缘处,磁力线偏离线圈平面法向的角度增大,磁场强度减弱;线圈外距离半个边长以远磁场强度衰减加快。该物理模拟结果对矿井瞬变电磁法探测方向的设计、工作装置和与富水区最佳耦合具有重大指导意义。

Characteristics of Square Loop Electromagnetic Field Radiation and Research of Physical Simulation Experiment

Based on electromagnetic field diffusion theory and similarity of physical simulation,this paper probes the electromagnetic radiation characteristics of the multi-turn square loop overlap.The results show that the magnetic field lines spread out perpendicularly to the coil plane at the coil center 1/3 position,the magnetic field lines deviate small-angle from coil surface normal direction at the coil center 1/4 position.If deviation angle increases,density field strength decreases and the coil magnetic field lines fades away from the coil of one side of a long distance and the outside border.Therefore,the physical simulation results have an important guiding significance for work arrangement of roof and floor in water-rich areas with transient electromagnetic detection,detecting the direction of the design,coupling with the best water-rich area.