CAJ | 학술논문

在地球物理反演中，往往是要用有限的信息去反演尽可能多的参数，以期获得关于目标体的详尽信息，传统的基于求偏导数的反演方法，在初始模型偏离真值较大的时候，反演很难收敛，而遗传算法则可以克服反演对初值的依赖。这里使用基于等效涡流的方法，简化地－井TEM 三分量响应为圆形电流环在自由空间的响应模型，并使用逐步缩小搜索范围和多重小生境相结合的改进型混合遗传算法，较为精确地反演了表征导电薄板异常的七个参数，理论模型算例在多次搜索遗传计算之后，反演获得的模型参数误差小于5‰。
재지구물리반연중，왕왕시요용유한적신식거반연진가능다적삼수，이기획득관우목표체적상진신식，전통적기우구편도수적반연방법，재초시모형편리진치교대적시후，반연흔난수렴，이유전산법칙가이극복반연대초치적의뢰。저리사용기우등효와류적방법，간화지－정TEM 삼분량향응위원형전류배재자유공간적향응모형，병사용축보축소수색범위화다중소생경상결합적개진형혼합유전산법，교위정학지반연료표정도전박판이상적칠개삼수，이론모형산례재다차수색유전계산지후，반연획득적모형삼수오차소우5‰。
In geophysical inversion,we need parameters with limited information to get as much as possible,in order to ob-tain detailed information about the target body.For the inversion method based on partial derivatives of tradition,when the ini-tial model deviation from the true value large,inversion is difficult to convergence,while the genetic algorithm can overcome dependency inversion of initial value.This paper used the method of equivalent eddy current based on the simplified model,re-sponse to borehole TEM three component response for circular current loop in the free space,and the use of gradually narrow the search range and improved multi niche hybrid genetic algorithm is more accurate to inverse seven parameter which charac-terization of conductive sheet abnormal,the theoretical model calculation after several search genetic algorithm,the parameters of the inversion model error is less than 5‰ .