Surface Subsidence Modelling Induced by Formation of Cavities in Underground Coal Gasification
文献类型：期刊论文
| 作者 | Jiang, Yuan1,4; Chen, Bingbing3,5; Teng, Lin2; Wang, Yan2; Xiong, Feng1,5 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 14期号:13页码:16 |
| 关键词 | underground coal gasification surface subsidence stress field displacement field numerical simulation |
| DOI | 10.3390/app14135733 |
| 英文摘要 | Underground coal gasification (UCG) is an efficient method for the conversion of deep coal resources into energy. The scope of this work is to model the subsidence of four gasification cavities with a size of 30 m x 30 m x 15 m, separated by 15 m wide pillars. Two scenarios of gasification sequence are modelled, one with the gasification of cavities 1 and 2 followed by 3 and 4, and the other one with the sequence of cavities 1 and 3, followed by 2 and 4. The results show that the final surface subsidence after gasification of four cavities is 9.8 mm and the gasification sequence has an impact only on the subsidence at the intermediate stage but has no impact on the final subsidence after all four cavities are formed, when only the elasticity regime is considered. Additionally, the maximum surface subsidence for the studied cavities of different sizes ranges from 0.016 mm to 7.14 mm, and the relationship between the subsidence and the cavity volume is approximately linear. Finally, a prediction model of surface subsidence deformation is built up using the elastic plate theory, and the formula of surface deformation at a random point is given. The maximum difference between measured and calculated deformation is 4.6%, demonstrating that the proposed method can be used to predict the ground subsidence induced by UCG. |
| 资助项目 | Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[SKLGME023023] ; Slope safety control and disaster prevention technology innovation team of Youth Innovation Talent Introduction and Education Plan of Shandong Colleges and Universities[51] ; National Natural Science Foundation of Shandong Province of China (NSFC)[ZR2022ME188] ; Jinan City new university20 research leader studio project[20228108] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001269551500001 |
| 出版者 | MDPI |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/41996]  |
| 专题 | 中科院武汉岩土力学所 |
| 通讯作者 | Chen, Bingbing |
| 作者单位 | 1.China Univ Geosci, Fac Engn, Wuhan 430074, Peoples R China 2.Qilu Inst Technol, Coll Civil Engn, Jinan 250200, Peoples R China 3.Swansea Univ, Zienkiewicz Inst Modelling Data & AI, Fac Sci & Engn, Swansea SA1 8EN, England 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 5.Anhui Univ Sci & Technol, Anhui Key Lab Min Construct Engn, Huainan 232001, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Yuan,Chen, Bingbing,Teng, Lin,et al. Surface Subsidence Modelling Induced by Formation of Cavities in Underground Coal Gasification[J]. APPLIED SCIENCES-BASEL,2024,14(13):16. |
| APA | Jiang, Yuan,Chen, Bingbing,Teng, Lin,Wang, Yan,&Xiong, Feng.(2024).Surface Subsidence Modelling Induced by Formation of Cavities in Underground Coal Gasification.APPLIED SCIENCES-BASEL,14(13),16. |
| MLA | Jiang, Yuan,et al."Surface Subsidence Modelling Induced by Formation of Cavities in Underground Coal Gasification".APPLIED SCIENCES-BASEL 14.13(2024):16. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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