Through study of the space between feed launder and bucket when excavating ores, the formula for calculating the distance of ore feeding was derived from the angle at which the bucket ladder was placed. 本文通过对采金船挖斗在工作挖矿时,与受矿槽之间距离的研究,推导出了斗桥下放不同角度时,挖斗与受矿槽间,受矿距离的计算公式。