塔矿项目无底柱分段崩落法损失及贫化率控制

Loss and Dilution Rate Control of the Sublevel Caving Method without Sill Pillar Method in Tajikistan Mining Project

无底柱分段崩落法在爆破、出矿过程中存在贫化与损失,而采矿损失及其贫化率控制是矿山生产的重要环节之一,其直接影响到矿山的经济效益和服务年限。根据项目实际施工参数及生产放矿结果,从矿山生产探矿程度、采场结构参数、采场采出矿管理等三个方面系统地分析了影响无底柱分段崩落法损失及贫化率的影响因素,提出了采取加密地质钻探、优化采场结构参数以及提高现场管理水平等措施并予以实施,达到了降低损失及贫化率的目的。

There are dilution and losses in the process of blasting and mining using the sublevel caving method without sill pillar method,and the dilution and loss rate control is the main link of mine production,which directly affects the mines economic benefits and service life.According to the actual construction parameters of the project and the results of production ore drawing,the paper systematically analyzes the factors that affect the loss and dilution rate of the method,which can be divided in three aspects:mine production prospecting degree,stope structural parameters,and stope mining management.Measures such as intensified geological drilling,optimization of stope structure parameters and improvement of field management level are put forward and implemented to reduce the loss and dilution rate.