瞬变电磁法全期视电阻率、视深度求解方法与应用

CALCULATION AND UTILIZATION OF THE WHOLE STAGE APPARENT RESISTIVITY AND APPARENT DEPTH BY TRANSIENT ELECTROMAGNETIC METHOD

早期道的瞬变电磁结果、视电阻率计算是通过样条函数ｆｃ（τ）获得的，提出了全期视电阻率ρｓ＝Ｕ·Ｌ／４πｆｃ（τ）式的实用计算方法，以揭阳机场地基工程为例进行了应用计算；视深度计算采用均匀半空间模型法和层状模型法，以荡坪钨矿实例，阐述其视深度计算求解方法的原理及误差影响因素。为瞬变电磁法（ＴＥＭ）成图方式提供了直观的新方法。

Transient electromagnetic result of the early channel and calculation of the apparent resistivity are obtained by fc(τ). A practical calculation method,ρs=U·L/4πfc(τ) has been advanced, by which the foundation engineering in the Jieyang airport is calculated. Apparent depth is calculated by uniform hemispace model and layered model. Taking the Dangping tungsten deposit as an example, the principle and error effects of the calculation method are discribed to calculate the apparent depth. Which has provided a objective new method for the mapping of TEM.