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三度体外磁场三分量面元量板(简称三度体量板)与桂林冶金地质研究所似二度体量板的数理推导类似,都以小球的磁场解析式为基础;其差别是先制成小扇形块的Ⅰ、Ⅱ、Ⅲ三个面元量板,算出三度体各截面的面元磁场,然后再沿走向进行近似积分.三度体量板可以制成与似二度体量板完全相同的形式.为了解决计算点到不同距离的面元都能通用一套量板的问题,对量板相邻半径的环带间隔给予了不同环带系数.用面元量板计算出三度体的各截面(一般只需要计算包括极大、极小和转折面等3～5个截面即可)面元磁场值后,可用任何近似积分方法计算出磁场的三个分量.所介绍的这种方法虽仍较繁,但目前在物探野外工作中还没有简单实用的计算三度体磁场的手算方法,因此还是可用的.经过试算,对较简单的三度体,两个熟练的计算人员每日可以计算5～7个点的磁场三分量,相当于对一条野外实测剖面概略地算出
Three-dimensional in vitro magnetic field three-component face plate (referred to as the third volume plate) and Guilin Institute of Metallurgy and Geomechanics similar to the second volume plate mathematical deduction similar to the ball’s magnetic field analytical formula based on the difference is the first Made of a small sector of Ⅰ, Ⅱ, Ⅲ three facet plate, calculate the third body of the cross-section of the surface of the magnetic field, and then along the trend for approximate integration. Third-degree volume plate can be made with the second body In order to solve the problem that a set of measuring plates can be used universally from one point to another with different distances, different annular zone coefficients are given to the annular distance between the adjacent radii of the measuring plates. The third body of the cross-section (generally only need to calculate, including the maximum, minimum and transition surface 3 to 5 cross-section can be) after the field value of the magnetic field can be approximated by any approximate method of calculating the magnetic field of the three components Although this method is still introduced, there is no simple and practical way to calculate the three-dimensional magnetic field in geophysical field work, so it is still available.Through trial calculations, for the simpler three-dimensional body, two A skilled computing staff can calculate the daily magnetic field of 5 to 7 points one-third , Equivalent to a cross-sectional view schematically calculated field Found