Knowledge Management System of Institute of Rock and Soil Mechanics,CAS
| A combined supporting system based on foamed concrete and U-shaped steel for underground coal mine roadways undergoing large deformations | |
| Tan, Xianjun1,2,3; Chen, Weizhong1,4; Liu, Hongyuan2,3; Chan, Andrew Hin Cheong2,3; Tian, Hongming1; Meng, Xiangjun5; Wang, Fuqi5; Deng, Xiaolin5 | |
| 2017 | |
| 发表期刊 | TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
 |
| ISSN | 0886-7798 |
| 卷号 | 68期号:-页码:196-210 |
| 摘要 | In order to develop a satisfied support scheme for roadways excavated in soft rock and subjected to large deformation in coal mines, a combined supporting system is proposed, which includes steel mesh, bolt, anchoring cable, shotcrete, compressible U-shaped steel, foamed concrete damping layer, and fractured rock cushion layer. The interpretation of the behavior of the supporting system is carried out by numerical analysis and field monitoring. The results from the numerical analysis reveal that: due to the fact that the foamed concrete absorbed most of the deformations of the surrounding rock, the shrinkage of the U-shaped steel was significantly reduced, and the relationship between the average axial force of the U-shaped steel and the foamed concrete thickness is a second order equation. It is further noticed that, in engineering practice, the damping effect was no longer evident when the thickness of foamed concrete exceeded 30 cm. The field monitoring results show that both the force sustained by the U-shaped steel and the displacement of the surrounding rock exhibited a trend of increase in the first 20 days after the support system was formed but the increasing trend reduced after that, which means the proposed combined supporting system is effective to control the large deformation of roadways excavated in soft rock. |
| 关键词 | Surrounding rock Combined supporting,system U-shaped steel Foamed concrete |
| DOI | 10.1016/j.tust.2017.05.023 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS研究方向 | Construction & Building Technology ; Engineering |
| WOS类目 | Construction & Building Technology ; Engineering, Civil |
| WOS记录号 | WOS:000406988300018 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.198/handle/2S6PX9GI/4121 |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Univ Tasmania, Sch Engn; 3.Univ Tasmania, ICT, Hobart; 4.Shandong Univ, Res Ctr Geotech & Struct Engn ; 5.Tan Zhou Coal Ming Co LTD |
| 第一作者单位 | 中科院武汉岩土力学所 |
| 推荐引用方式 GB/T 7714 | Tan, Xianjun,Chen, Weizhong,Liu, Hongyuan,et al. A combined supporting system based on foamed concrete and U-shaped steel for underground coal mine roadways undergoing large deformations[J]. TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,2017,68(-):196-210. |
| APA | Tan, Xianjun.,Chen, Weizhong.,Liu, Hongyuan.,Chan, Andrew Hin Cheong.,Tian, Hongming.,...&Deng, Xiaolin.(2017).A combined supporting system based on foamed concrete and U-shaped steel for underground coal mine roadways undergoing large deformations.TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY,68(-),196-210. |
| MLA | Tan, Xianjun,et al."A combined supporting system based on foamed concrete and U-shaped steel for underground coal mine roadways undergoing large deformations".TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY 68.-(2017):196-210. |
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