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对各种求面积方法的评述在勘探工作中,能否较精确地在剖面图或投影图上确定矿体图形的面积,将直接影响到储量计算的精度.以往确定矿体图形的面积,主要用求积仪法、方格纸法、几何图形法和平行线法数种,其中尤以前两三种用得最多.但是,这些求面积的方法,均各有其缺点. 求积仪法1.由于求积仪的航针移动速度不够均匀,或读数小轮转动不够灵活等原因,导致转动情况不理想,造成一定的误差,有时误差甚至很大. 2.由于系手动操纵,很难使航针完全沿图形边界线移动,也会造成误差.
Comment on Various Methods of Seeking Area In the prospecting work, whether the area of the ore body pattern can be determined more accurately on the profile or the projection map will directly affect the accuracy of the calculation of the reserves. In the past, the area of the ore body pattern, mainly Using the quadrature method, the grid paper method, the geometric method and the parallel method, of which the first two or three are the most used, however, these methods of finding the area all have their own drawbacks. Due to the lack of uniformity in the speed of the journaled needles or the lack of flexibility in reading the small wheels, the rotation is not ideal, resulting in some errors, sometimes even large errors. Travel needle completely along the boundary line of graphics, will also cause errors.