Investigation of the Deformation Failure Occurring When Extracting Minerals via Underground Mining: A Case Study
文献类型：期刊论文
| 作者 | Liu, Xuanting; Chen, Congxin; Liu, Xiumin; Xia, Kaizong; Wang, Tianlong |
| 刊名 | MINERALS
 |
| 出版日期 | 2022-08-01 |
| 卷号 | 12期号:8 |
| 关键词 | metal mine underground orebody excavation sublevel caving method strata movement mining disturbance deformation failure numerical simulation |
| 英文摘要 | Metal mines mined using the sublevel caving method often exhibit various environmental problems on the ground surface. This can affect the safety of the production process in the mining area. A numerical model using Universal Distinct Element Code has been established to investigate deformation failure giving rise to this underground mining. The calculations are combined with in-situ monitoring data collected over a period of 10 years. The results indicate that the strata movement in the footwall can be divided into two stages: an arch caving development stage and post arch caving development stage. Mining disturbance is the main cause of caving in the arch caving development stage. The overlying strata experience 'caving-stability-caving', leading to the formation of an 'arch-shaped' caving pattern. In the post arch caving development stage, flexural-toppling deformation occurs in the strata in the direction of the collapse pit due to the tectonic stress present and high dip angles of the discontinuities. Through-going failure surface has been analyzed by studying the plastic state and displacement of elements. The formation of through-going failure surface is related to the flexural-toppling deformation and stress concentration caused by mining activities. Based on the different failure mechanisms, an efficient partition has been proposed such that the footwall can be divided into a stable zone, flexural-toppling failure zone, compression and slipping-toppling failure zone, and shear-slipping failure zone. The results are a useful reference when applied to the Chengchao Iron Mine and other similar metal mines. |
| 学科主题 | Geochemistry & Geophysics ; Mineralogy ; Mining & Mineral Processing |
| 语种 | 英语 |
| WOS记录号 | WOS:000845345000001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/34831]  |
| 专题 | 中科院武汉岩土力学所 |
| 作者单位 | 1.Chinese Academy of Sciences; Wuhan Institute of Rock & Soil Mechanics, CAS; 2.Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS |
| 推荐引用方式 GB/T 7714 | Liu, Xuanting,Chen, Congxin,Liu, Xiumin,et al. Investigation of the Deformation Failure Occurring When Extracting Minerals via Underground Mining: A Case Study[J]. MINERALS,2022,12(8). |
| APA | Liu, Xuanting,Chen, Congxin,Liu, Xiumin,Xia, Kaizong,&Wang, Tianlong.(2022).Investigation of the Deformation Failure Occurring When Extracting Minerals via Underground Mining: A Case Study.MINERALS,12(8). |
| MLA | Liu, Xuanting,et al."Investigation of the Deformation Failure Occurring When Extracting Minerals via Underground Mining: A Case Study".MINERALS 12.8(2022). |
入库方式： OAI收割
来源：武汉岩土力学研究所
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