Influencing factors on the flow characteristics of an isolated extraction zone in caving mining
Based on the particle flow theory and PFC3D code, a draw model with the meso-mechanical properties of ore granular media was constructed to study influencing factors on the flow characteristics of an isolated extraction zone in caving mining. Major factors that have significant influence on the flow...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | zho |
| Published: |
Science Press
2015-09-01
|
| Series: | 工程科学学报 |
| Subjects: | |
| Online Access: | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2015.09.001 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850184697119768576 |
|---|---|
| author | SUN Hao JIN Ai-bing GAO Yong-tao ZHOU Yu YANG Zhen-wei |
| author_facet | SUN Hao JIN Ai-bing GAO Yong-tao ZHOU Yu YANG Zhen-wei |
| author_sort | SUN Hao |
| collection | DOAJ |
| description | Based on the particle flow theory and PFC3D code, a draw model with the meso-mechanical properties of ore granular media was constructed to study influencing factors on the flow characteristics of an isolated extraction zone in caving mining. Major factors that have significant influence on the flow characteristics of the isolated extraction zone and their sensibility and relationships with the flow characteristics were determined by statistical knowledge. Simultaneously, the suitability and reliability of the draw model based on PFC3D code and used in influencing factor research of the isolated extraction zone were validated by contrastive analysis between existing research conclusions and simulated results. The research results show that particle shape, friction coefficient, and drawpoint size are important parameters significantly influencing the flow characteristics of the caved ore and rock. In the initial stage of drawing, drawpoint size has the greatest influence on the form of the isolated extraction zone followed by friction coefficient and particle shape;in the following stage of drawing, particle shape has the greatest influence on the form of the isolated extraction zone followed by drawpoint size and friction coefficient. The drawing will be more difficult if the particle shape is more irregular, the inter-nal friction angle of particles is larger and the drawpoint size is smaller. |
| format | Article |
| id | doaj-art-d2ec3edcd6f74dd0b91adaa48fad5e1e |
| institution | OA Journals |
| issn | 2095-9389 |
| language | zho |
| publishDate | 2015-09-01 |
| publisher | Science Press |
| record_format | Article |
| series | 工程科学学报 |
| spelling | doaj-art-d2ec3edcd6f74dd0b91adaa48fad5e1e2025-08-20T02:16:59ZzhoScience Press工程科学学报2095-93892015-09-013791111111710.13374/j.issn2095-9389.2015.09.001Influencing factors on the flow characteristics of an isolated extraction zone in caving miningSUN Hao0JIN Ai-bing1GAO Yong-tao2ZHOU Yu3YANG Zhen-wei4Civil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaCivil and Environmental Engineering School, University of Science and Technology Beijing, Beijing 100083, ChinaBased on the particle flow theory and PFC3D code, a draw model with the meso-mechanical properties of ore granular media was constructed to study influencing factors on the flow characteristics of an isolated extraction zone in caving mining. Major factors that have significant influence on the flow characteristics of the isolated extraction zone and their sensibility and relationships with the flow characteristics were determined by statistical knowledge. Simultaneously, the suitability and reliability of the draw model based on PFC3D code and used in influencing factor research of the isolated extraction zone were validated by contrastive analysis between existing research conclusions and simulated results. The research results show that particle shape, friction coefficient, and drawpoint size are important parameters significantly influencing the flow characteristics of the caved ore and rock. In the initial stage of drawing, drawpoint size has the greatest influence on the form of the isolated extraction zone followed by friction coefficient and particle shape;in the following stage of drawing, particle shape has the greatest influence on the form of the isolated extraction zone followed by drawpoint size and friction coefficient. The drawing will be more difficult if the particle shape is more irregular, the inter-nal friction angle of particles is larger and the drawpoint size is smaller.http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2015.09.001caving miningflow characteristicsinfluencing factorsmathematical models |
| spellingShingle | SUN Hao JIN Ai-bing GAO Yong-tao ZHOU Yu YANG Zhen-wei Influencing factors on the flow characteristics of an isolated extraction zone in caving mining 工程科学学报 caving mining flow characteristics influencing factors mathematical models |
| title | Influencing factors on the flow characteristics of an isolated extraction zone in caving mining |
| title_full | Influencing factors on the flow characteristics of an isolated extraction zone in caving mining |
| title_fullStr | Influencing factors on the flow characteristics of an isolated extraction zone in caving mining |
| title_full_unstemmed | Influencing factors on the flow characteristics of an isolated extraction zone in caving mining |
| title_short | Influencing factors on the flow characteristics of an isolated extraction zone in caving mining |
| title_sort | influencing factors on the flow characteristics of an isolated extraction zone in caving mining |
| topic | caving mining flow characteristics influencing factors mathematical models |
| url | http://cje.ustb.edu.cn/article/doi/10.13374/j.issn2095-9389.2015.09.001 |
| work_keys_str_mv | AT sunhao influencingfactorsontheflowcharacteristicsofanisolatedextractionzoneincavingmining AT jinaibing influencingfactorsontheflowcharacteristicsofanisolatedextractionzoneincavingmining AT gaoyongtao influencingfactorsontheflowcharacteristicsofanisolatedextractionzoneincavingmining AT zhouyu influencingfactorsontheflowcharacteristicsofanisolatedextractionzoneincavingmining AT yangzhenwei influencingfactorsontheflowcharacteristicsofanisolatedextractionzoneincavingmining |