结构复杂的露天矿围岩采用破碎输送设备的特点

IF 2.8 Q2 MINING & MINERAL PROCESSING Mining of Mineral Deposits Pub Date : 2022-12-30 DOI:10.33271/mining16.04.096
K. Babii, M. Chetveryk, Volodymyr Perehudov, Kostiantyn Kovalov, R. Kiriia, Viacheslav Pshenychnyi
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引用次数: 1

摘要

为了提高深部矿山开采的经济效益,在工作区结构复杂的露天矿中应用一种井下破碎输送技术,该技术组合包括倾斜输送机和急倾斜输送机。方法。本研究采用了一种复杂的方法,包括:对矿山企业实践的技术经济分析,选矿厂和露天矿使用输送装置的经验;采矿—露天矿剖面的几何分析—确定深露天矿围岩工作区结构及其沿深度的特征;结构发展-改进陡斜输送机的设计;技术过程的仿真建模-选择最佳的技术解决方案。发现。基于已有的研究,认为考虑到深露天矿工作区的结构特点,向深露天矿内破碎输送技术过渡是很有前景的。在这种情况下,在倾角为10 ~ 18°的露天矿围岩场地,适宜采用倾斜输送机或深槽输送机;当场地倾角为30 ~ 36°时,建议使用大倾角输送机。创意。首次确定了深露天矿工作区与工艺复合体结构形成之间的关系。定义了在不同的货带摩擦系数下,圆管输送机的边界倾角αn与输送带与货物的不填充角θ的关系。实际意义。研究结果为利用井下破碎输送技术拓宽矿山开采的应用领域和提高矿山开采效率提供了可能。
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Features of using equipment for in-pit crushing and conveying technology on the open pit walls with complex structure
Purpose is to substantiate the use of an in-pit crushing and conveying technology at the open pits with complex structure of the working zone, which technological complex includes inclined and steeply inclined conveyors for improved economic efficiency of mineral mining at deep levels. Methods. The study applies a complex method including: technical-economical analysis of the practice of mining enterprises, experience of using conveying units at concentration plants and open pits; mining-geometrical analysis in terms of open pit sections – to identify the structure of the working zone of a deep open pit wall and its features along the depth; structural developments – to improve the design of a steeply-inclined conveyor; simulation modelling of the technological processes – to select optimal technical solutions. Findings. Basing on the performed studies, it has been identified that transfer to a new trend of the in-pit crushing and conveying technology, considering the structural features of the working zone of a deep open pit, is rather prospective. In this context, it is expedient to use inclined conveyors or deep-trough conveyors on the sites of an open pit wall with the inclination angle of 10-18°; in case of sites with the inclination angle of 30-36°, it is recommended to use steeply inclined conveyors. Originality. For the first time, a relation between the working zone of a deep open pit and formation of the structure of technological complexes has been identified. Dependences of the boundary inclination angle αn of a pipe conveyor on the angle of non-filling θ of its belt with the cargo at different coefficients of cargo-belt friction have been defined. Practical implications. The obtained results make it possible to widen the application sphere and increase the efficiency of mineral mining with the use of in-pit crushing and conveying technology.
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来源期刊
Mining of Mineral Deposits
Mining of Mineral Deposits MINING & MINERAL PROCESSING-
CiteScore
5.20
自引率
15.80%
发文量
52
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