摘要
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。
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.
出处
《工程地球物理学报》
2011年第2期211-215,共5页
Chinese Journal of Engineering Geophysics
关键词
方型回线
瞬变电磁法
物理模拟
电磁场特征
square loop
tem
physical simulation
electromagnetic field characteristics
