论文部分内容阅读
直流电测深曲线的定量解释工作通常是用曲线拟合的方法实现的。由于直流电测深曲线拟合问题本身是非线性的,因此,拟合时采用非线性问题线性化的理论,用迭代法逐步逼近其真值。其具体作法是先求出实测视电阻率的核函数,再用递推公式求出理论视电阻率的转换核函数,然后使其二者差的平方和达到最小,即,使得二者平方差的和对模型电性和几何参数的偏导数为零。给定初始模型后,一般在迭代1—7次之后就能达到满意的结果。文中列举了用PC-1500微型机进行直流电测曲线自动解释的实例。
The quantitative interpretation of DC sounding curve is usually done by curve fitting method. Because the curve fitting problem of DC sounding curve itself is non-linear, the theory of non-linear linearization is adopted in the fitting, and its true value is gradually approximated by the iterative method. The specific practice is to find the measured apparent resistivity of the kernel function, and then recursive formula to find the apparent apparent resistivity conversion kernel function, and then make the difference between the two to minimize the sum of squares, that is, so that the two squared deviations And the partial derivative of the model electrical and geometric parameters is zero. Given an initial model, it is usually satisfactory after 1-7 iterations. The article lists examples of automatically interpreting DC measured curves with a PC-1500 microcomputer.