For any n-layer verticaldike set with contrasts of electric resistivity, a set of equations of coefficients are derived for calculating the electricpotential in the point source field.
对于任意多层不同电阻率垂直岩层，导出了求解点源场电位的系数方程组。
2
This paper analyzes the causation of the vertical rifts in the concrete wall against water wave of the first stage construction of the Songgan Dike in Tonghe County and poses the prevention measure.