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为了找出规律,进行异常解释,在各种物探方法中常通过理论计算研究已知矿体的有关物理场的分布情况。对放射性测量也具有相同情况。但其中有关γ场的理论计算,在过去沿用的球坐标的某些计算中积分不取最终形式,无函数解,不能方便地将其结果运用到实际中去。为此计算了u函数,给出函数解,可以u函数表达积分结果(如本文式30—34),并有函数表可查。 u函数算出后,看到了用柱坐标解决γ测井中计算问题的G函数的有关资料,G函数在使用中且有其方便之处,但它不能运用于矿体与围岩密度不同和矿体与围岩处井孔孔径不一致情况下的计算工作。而在这些情况下都可以使用u函数进行计算,且u函数也可用于地面r测
In order to find out the regularity and explain the abnormality, the distribution of the relevant physical field of the known ore body is often studied theoretically in various geophysical methods. The same is true for radiometric measurements. However, in the theoretical calculation of γ field, in some calculations of the spherical coordinates used in the past, the integral does not take the final form and has no function solution, and can not easily apply the result to practice. For this purpose, the u function is computed, the solution of the function is given, and the u result can be expressed as u (30-34), and the function table can be checked. After the u function is calculated, we see the relevant data about the G function that solves the calculation problem in the γ logging using the cylindrical coordinates. The G function is in use and has its convenience. However, it can not be applied to the ore body with different densities of the surrounding rock and the ore Computation work of borehole diameter difference between body and surrounding rock. In these cases, u functions can be used to calculate, and u function can also be used for ground r test