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一、问题的提出如果我们已知一个地区的地电和地形资料,对给定的装置和供电电流值计算视电阻率值,这个问题即是电法勘探的正问题,这是电法勘探定量解释的基础。由于地电条件的复杂性,用一般场论中经典的方法难于求得解答,大量的电测问题目前尚未能得出准确的求解公式,仅对于部分规则的简单地电条件和地形条件可以用公式求解。因此,人们希望从电场所满足的微分方程或积分方程出发,用近似计算方法求其数值解。
I. PROBLEM PROPOSALS If we know the geoelectric and topographical data for an area and calculate the apparent resistivity for a given installation and supply current value, this is the positive problem of electrical prospecting, which is the result of electrical prospecting Explain the basis. Due to the complexity of geoelectric condition, it is difficult to find the solution by the classical method in the general field theory. A large number of electrical measurement problems have not yet been able to find an accurate solution formula, and only for some rules, simple electrical conditions and topographical conditions can Solve the formula. Therefore, one hopes that starting from the differential equation or integral equation satisfied by the electric field, the numerical solution can be obtained by the approximate calculation method.