A series of formulas for calculating ore loss and dilution on the condition of the single hopper opening are given based on the expectation body principle of drawing ore.

本文根据放出期望体理论导出了一整套单漏口条件下计算损失贫化的公式。

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After analyzing the movement law of ore drawing body, the basic parameters of sublevel mine in a gold mine are calculated by the experiment result of single model and surface model in a lab.

介绍了无底柱分段崩落法放矿基本原理，利用室内单体模型和平面模型的放矿试验，分析了放矿体的流动规律，并据此确定了某金矿无底柱分段崩落法的基本结构参数。

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