Temperature effect on shear behavior of ore-backfill coupling specimens at various shear directions
文献类型：期刊论文
| 作者 | Jiang Fei-fei4,5; Zhou Hui4,5; Sheng Jia2,3; Li Xiang-dong3; Kou Yong-yuan1 |
| 刊名 | JOURNAL OF CENTRAL SOUTH UNIVERSITY
 |
| 出版日期 | 2021-10-01 |
| 卷号 | 28期号:10页码:3173-3189 |
| 关键词 | cemented backfill ore-backfill temperature shear direction shear strength AE energy |
| ISSN号 | 2095-2899 |
| DOI | 10.1007/s11771-021-4841-4 |
| 英文摘要 | Understanding the temperature effect on shear behavior of the ore-backfill coupling structure is critical for the safety and stability of backfill stope under the condition of high horizontal stress in deep mining. Direct shear tests were carried out on the cemented rod-mill sand backfill (CRB) and ore-CRB (OCRB) coupling specimens at various temperatures (20, 40 and 60 degrees C). The shear behavior and AE characteristic parameters of OCRB at different shear directions were compared and analyzed. The results show that the temperature effect on the shear performance of CRB mainly depends on the characteristics of microstructures and main mineral phases; the performance of CRB at 40 degrees C is relatively good; the shear deformation of OCRB has one more "peak fluctuation stage" than CRB and has a good correlation with AE characteristic parameters. The temperature can positively or negatively impact the shear strength of OCRB, depending on the temperature and shear direction; the shear performance of OCRB along the axis direction (D1) is significantly better than that perpendicular to the axis direction (D2). The co-bearing capacity of the ore-backfill coupling structure (i.e., stopes) is closely related to the ambient temperature and principal stress orientation. |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000721601100017 |
| 出版者 | JOURNAL OF CENTRAL SOUTH UNIV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/28330]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Jiang Fei-fei |
| 作者单位 | 1.Jinchuan Grp Co Ltd, Jinchang 737104, Peoples R China 2.Hunan Univ Sci & Technol, Sch Resource & Environm & Safety Engn, Xiangtan 411201, Peoples R China 3.Changsha Inst Min Res Co Ltd, Natl Engn Res Ctr Met Min, Changsha 410012, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang Fei-fei,Zhou Hui,Sheng Jia,et al. Temperature effect on shear behavior of ore-backfill coupling specimens at various shear directions[J]. JOURNAL OF CENTRAL SOUTH UNIVERSITY,2021,28(10):3173-3189. |
| APA | Jiang Fei-fei,Zhou Hui,Sheng Jia,Li Xiang-dong,&Kou Yong-yuan.(2021).Temperature effect on shear behavior of ore-backfill coupling specimens at various shear directions.JOURNAL OF CENTRAL SOUTH UNIVERSITY,28(10),3173-3189. |
| MLA | Jiang Fei-fei,et al."Temperature effect on shear behavior of ore-backfill coupling specimens at various shear directions".JOURNAL OF CENTRAL SOUTH UNIVERSITY 28.10(2021):3173-3189. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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