大冶铁矿地下采区分段储量的计算及实践

无底柱分段崩落法在金属矿山中得到广泛应用。这些矿山普遍采用水平断面法计算分层储量，以分层储量来对生产分段进行储量管理。根据多年的实践，提出分段储量的概念，以大冶铁矿龙洞矿体为例，详细介绍了分段储量的计算方法，并对计算误差进行了对比分析。采用分段储量计算方法可以减少计算工作量，缩短计算周期，提高储量的可靠程度，有利于指导采矿生产，给矿山损失贫化计算和储量的动态管理提供很大的便利。可供同类矿山参考。

Calculation and Practice of Sublevel Extractable Reserve of Underground Zone in Daye Iron Mine

Pillarless sublevel caving has gained wide application in metal mines, where horizontal cross-section method is generally used to calculate the stratified reserve that is used in the reserve management of the production sublevels. The concept of sublevel reserve is proposed based on many years' practice. With Longdong orebody in Daye Iron Mine as the real case, the calculation method of sublevel reserve is described in detail and the calculation error is compared and analyzed. The adoption of the sublevel reserve calculation method can reduce the calculation amount, shorten the calculation cycle and improve the reliability of reserve, thus greatly facilitating the guidance on mining production, the mine loss and dilution calculation and the dynamic management of reserve. It can be reference to the similar mines.