Study on mechanical behavior of inclined cemented tailings composite backfill (CTCB) under uniaxial compression
文献类型：期刊论文
| 作者 | Zhang, Haina2,5; Hu, Wenhui5; Li, Huan3,4; Chen, Shunman5; Xia, Kaizong1; Ye, Liang Liang3,4 |
| 刊名 | CONSTRUCTION AND BUILDING MATERIALS
 |
| 出版日期 | 2024-08-16 |
| 卷号 | 439页码:16 |
| 关键词 | Cemented tailings composite backfill Mechanical behavior Interface inclination angle Digital Image Correlation technology Failure modes |
| ISSN号 | 0950-0618 |
| DOI | 10.1016/j.conbuildmat.2024.137410 |
| 英文摘要 | The goaf volume in the vacancy method of hard rock mines is significantly larger than the filling capacity, forming layered and inclined planes during the large-scale filling process. This results in unclear mechanical impact mechanisms on the backfill. To investigate the effect of interface inclination angle on the mechanical behavior of backfill, a set of cemented tailings composite backfill (CTCB) samples with interface inclination angles of 15 degrees , 30 degrees , and 45 degrees are prepared. Uniaxial compression tests and digital image correlation techniques are used to investigate the influence of various interface inclination angles on the strength, deformation behavior, and failure mode of the CTCB. The results show that: (1) The uniaxial compressive strength (UCS) of the CTCB weakens with increasing interface inclination angle but consistently shows exponential growth with curing age (CA) regardless of the interface inclination angle. (2) The interface inclination angle controls the behavior and classification characteristics of the stress-strain curve of CTCB samples, and the increase of interface inclination angle weakens the elastic modulus. (3) The interface inclination angle significantly influences the failure mode and classification characteristics of the samples compared to CA and tailing-to-cement ratio (TCR), with shear slip failure induced by the former and axial splitting failure induced by the latter. The research provides a theoretical basis for understanding the mechanical behavior and stability control of inclined CTCB in underground mining. |
| 资助项目 | National Natural Science Foundation of China from China[52204148] ; National Natural Science Foundation of China from China[42377175] ; Open Fund of Key Laboratory of Road Structure and Material of the Ministry of Transport (Changsha University of Science & Technology) from China[kfj220302] ; East China Jiaotong University scientific research fund from China[2003420048] ; Jiangxi Provincial Natural Science Foundation from China[20224BAB214033] ; Jiangxi Provincial Natural Science Foundation from China[20232BAB204039] |
| WOS研究方向 | Construction & Building Technology ; Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:001268615800001 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/42005]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Li, Huan |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Changsha Univ Sci & Technol, Key Lab Rd Struct & Mat, Minist Transport Changsha, Changsha 410114, Hunan, Peoples R China 3.Jiangxi Acad Sci, Inst Energy Res, Nanchang 330096, Peoples R China 4.Jiangxi Carbon Neutralizat Res Ctr, Nanchang 330096, Peoples R China 5.East China Jiaotong Univ, Coll Civil Engn & Architecture, Nanchang 330013, Jiangxi Provinc, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Haina,Hu, Wenhui,Li, Huan,et al. Study on mechanical behavior of inclined cemented tailings composite backfill (CTCB) under uniaxial compression[J]. CONSTRUCTION AND BUILDING MATERIALS,2024,439:16. |
| APA | Zhang, Haina,Hu, Wenhui,Li, Huan,Chen, Shunman,Xia, Kaizong,&Ye, Liang Liang.(2024).Study on mechanical behavior of inclined cemented tailings composite backfill (CTCB) under uniaxial compression.CONSTRUCTION AND BUILDING MATERIALS,439,16. |
| MLA | Zhang, Haina,et al."Study on mechanical behavior of inclined cemented tailings composite backfill (CTCB) under uniaxial compression".CONSTRUCTION AND BUILDING MATERIALS 439(2024):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。