将自适应收缩可行域的遗传算法与视纵向电 导微分成像法相结合,反演瞬变电磁测深中的导电 薄层,计算结果证明:该算法通过对可行域的自适 应收缩,加快了计算速度、提高了计算精度;并在 一定程度上克服了瞬变电磁测深的等值性,缩小了 等值范围。通过对导电薄层模型的模拟计算和实例 分析,并与常规反演曲线进行对比,使用本法反演 成像的结果,明显地显示出导电薄层的存在。 By combining the adaptive shrinking feasible region genetic algorithm with the longitudinal conductivity differential imaging method, the conductive thin layer in the transient electromagnetic sounding can be inversed. The calculation results show that this algorithm accelerates the calculation speed by adaptive contraction of the feasible region , To improve the calculation accuracy; and to some extent to overcome the equivalent of transient electromagnetic sounding, narrowing the equivalent range. Through the simulation calculation and case analysis of the conductive thin-layer model and comparison with the conventional inversion curves, the results of the inversion imaging using this method clearly show the existence of the conductive thin layer.