دورية أكاديمية
Analysis of the Influence of Surrounding Rock State on Working Performance of Cutting Head in Metal Mining
| العنوان: | Analysis of the Influence of Surrounding Rock State on Working Performance of Cutting Head in Metal Mining |
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| المؤلفون: | Weipeng Xu, Lirong Wan, Kuidong Gao, Yu Bu, Meng Xu, Shenghao Ma, Kao Jiang |
| المصدر: | Applied Sciences, Vol 14, Iss 1, p 340 (2023) |
| بيانات النشر: | MDPI AG, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Technology LCC:Engineering (General). Civil engineering (General) LCC:Biology (General) LCC:Physics LCC:Chemistry |
| مصطلحات موضوعية: | tunnel surrounding rock state, hard rock, cutting head, mining capacity, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999 |
| الوصف: | Continuous mining is one of the development goals for metal mines, and the application of coal mining equipment represented by shearers provides a reference for continuous mining. However, rock in metal mines is generally harder than coal, making cutting difficult. Improving the surrounding rock conditions is an important way to improve the applicability of the drum for hard rock cutting. Therefore, this article explores the correlation between drum-cutting performance and surrounding rock boundary conditions, aiming to obtain surrounding rock boundary conditions that can help improve drum-cutting performance. To achieve the goal, a model of a shearer drum and hard rock is established using finite element software. With the model, hard rock cutting was simulated and the stress distribution on rock mass, deformation of rock mass, and drum cutting force during the cutting process under different confining pressures were analyzed. Relations between drum cutting force and confining pressure on rock mass were obtained. Then, drum cutting force under different free surfaces of rock mass are studied and the positions of free surface on rock mass that help to reduce the drum cutting force were summarized. According to the research, when the rock mass is under uniaxial compression, drum cutting force increases with the confining pressure on the rock mass; In addition, the free surfaces on the rock mass are proved to be helpful to reduce the drum cutting force. The research content lays the foundation for the boundary conditions required to reduce drum-cutting force in metal mining. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 2076-3417 |
| Relation: | https://www.mdpi.com/2076-3417/14/1/340; https://doaj.org/toc/2076-3417 |
| DOI: | 10.3390/app14010340 |
| URL الوصول: | https://doaj.org/article/25ba67afcb694c66b88791ff005bbaf3 |
| رقم الأكسشن: | edsdoj.25ba67afcb694c66b88791ff005bbaf3 |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 20763417 |
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| DOI: | 10.3390/app14010340 |