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前言当前,我国在储量计算中使用最广泛的是平行断面法,而此法中使用较多的公式是梯形公式和截锥公式.这两个公式的使用条件,基本上遵循的是(S_1-S_2)/S_1>40%时使用截锥公式(S_1、S_2为块体两底面面积),反之使用梯形公式.笔者认为,以面积大小作为公式的使用条件,在理论上是缺乏根据的,在实际使用中也出现很多弊病.首先,给人造成一种错觉,以为块体两底面积的相对差别大时,使用截锥公式较准确;两底面积差别小时,使用梯形公式较准确;而以40%作为界限,其产生的误差在实际计算中是可以接受的.其次,按此规定使用这两个公式时产生的误差并不算小,特别是当(S_1-S_2)/S_1>40%而使用截锥公式时.鞍钢矿山建设公司葛恩恕同志对“分块求积”问题产生
Foreword At present, China’s most widely used in the calculation of reserves is the parallel section method, and the formulas used in this method are the trapezoidal formula and the truncated cone formula. The conditions for using these two formulas basically follow (S_1- S_2)/S_1>40% use the truncated cone formula (S_1, S_2 are the two bottom surface areas of the block), and vice versa, the trapezoidal formula is used. The author believes that the use of the area size as the condition of the formula is theoretically unfounded. There are also many drawbacks in practical use. First of all, it creates an illusion that when the relative difference in the area of two blocks of blocks is large, the use of a truncated cone formula is more accurate; when the difference in area between two bases is small, the trapezoidal formula is more accurate; With 40% as the limit, the resulting error is acceptable in the actual calculation. Secondly, the error resulting from the use of these two formulas is not too small, especially when (S_1-S_2)/S_1> 40% When the truncated cone formula was used, Comrade Ge Enshu of Anshan Iron and Steel Mine Construction Co., Ltd. had a problem with the “segmental quadrature” problem.