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Conveying performance of drilling tool of auger miner at different strike angles based on discrete element method

Fu College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, 610059, China|
Nguyen (57218761488) | Bo (56714437200); van Xo | Kai (57216970317); Hu | Lin (37023028800); Wang Faculty of Electro-Mechanics, Hanoi University of Mining and Geology, Hanoi, 10000, Viet Nam|

Powder Technology Số , năm 2021 (Tập 378, trang 202-215)

ISSN: 325910

ISSN: 325910

DOI: 10.1016/j.powtec.2020.07.069

Tài liệu thuộc danh mục:



Từ khóa: Augers; Structural design; Structural optimization; Auger mining; Design and optimization; Drilling rods; Drilling tool; Guiding significances; Recovery ratio; Rotation directions; Twist direction; Article; calibration; controlled study; conveying performance; density; discrete element analysis; geometry; particle size; physical parameters; physical phenomena; process design; process optimization; strike angle; Infill drilling
Tóm tắt tiếng anh
The effect of strike angle on the conveying performance of drilling tools was studied using the discrete element method for efficient, reliable and economical auger mining. The results show that there are significant differences in volume fill level and power among the rows of drilling rods and drilling heads at any strike angles. It is necessary to take steps in the retreat process to improve the recovery ratio of the drilling tool. In addition, the increasing positive strike angle and increasing negative strike angle have opposite effects on the overall conveying performance of a drilling tool. To provide the drilling tool with consistent conveying performance, the screw twist direction and rotation direction of the middle drilling rod and middle drilling head should be designed according to the sign of the strike angle. This research has important guiding significance and practical value for the structural design and optimization of drilling tools. � 2020 Elsevier B.V.

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