金属矿山溜井系统的设计与优化

溜井系统是金属矿山实现矿废石低成本下向运输的有效方法。面对国内外矿山频繁发生溜井变形破坏的问题,在分析溜井系统变形破坏影响因素的基础上,以孟家铁矿露天转地下开采工程设计为例,进行了溜井运输系统优化,改变了传统的竖井旁侧高段集中溜井的设计模式,提出了竖井旁侧矿仓+采区溜井的溜井系统设计模式和采区溜井的倾斜布置方案。与优化前相比,优化后的方案减少掘进工程量15307.26m~3,减少支护工程量1870.10m~3,减少基建工程费457.8万元,缩短基建工期3.5月,能够有效克服高段溜井在生产使用过程中的各种不利因素。

Design and optimization of ore-pass system in metal mines

The ore-pass system is considered as an effective method to realize low cost transporting vertically of ore or waste rock in metal mines. In the face of orepass deformation and failure problems with increasing frequency of mines at home and abroad, based on the analysis of influencing factors of deformation and failure in ore-pass system, optimization of ore-pass system is carried out by taking engineering design of mining in transition from open-pit to underground in Mengjia Iron Mine for example. The traditional design mode of long ore-pass nearby the main shaft is changed, a new design mode of ore-pass system which is ore bins aside main shaft inclined ore pass system in mining section is putting forward in this paper. The results show that, compared to the original scheme, the optimization design could reduce the amount of 15307.26m₃ of the excavation and of 1870.10m₃ of supporting concrete,decrease the construction investment of 4,578,000 RMB, shorten the construction period of 3.5 months, and effectively overcome various unfavorable factors impacting on the stability of long orepass used in mining operation.