Numerical simulation on the cracking and failure law of compacted clay lining in landfill closure cover system
文献类型：期刊论文
| 作者 | Xue, Qiang ; Zhao, Ying; Li, Zhen-ze; Liu, Lei
|
| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS
 |
| 出版日期 | 2014 |
| 卷号 | 38期号:15页码:1556-1584 |
| 关键词 | compacted clay lining landfill closure cover system crack thermal-hydro-mechanical coupling numerical simulation |
| ISSN号 | 0363-9061 |
| DOI | 10.1002/nag.2271 |
| 英文摘要 | According to the mass conservation equation of solid phase, water transport, air migration and enthalpy balance equations in a deformable and unsaturated porous medium, and the mechanics model, a thermal-hydro-mechanical (THM) coupling mathematical model is developed in order to accurately predict the crack propagation of the compacted clay lining (CCL) in a landfill closure cover system. Numerical simulation analysis of the cracking and failure of the CCL in a landfill closure cover system under complex conditions (landfill gas pressure, variation of soil surface temperature, moisture loss of coverage soil, and uneven settlement of landfilled MSW (municipal solid waste)) is performed. The results show that the cracks are discovered firstly on the soil surface and then extend to the deeper cover system and became bigger. The cracks had broken through the closure cover system at 30days. Over the depth range of 0.06m, the change rate of settlement is found to be the highest because of the strong influence of temperature. The rise of temperature around the cracks is fast when the CCL is broken through by the cracks. There is a hollow area near the cracks over the depth range from 0.15 to 0.7m, and the temperature stabilize at around 11 degrees C without any obvious reduction. Under the condition of evaporation, the main crack in the CCL is similar to a pumping well, which causes more rapid moisture content reduction around the cracks. Vertical deformation increases linearly with depth in the process of deformation and cracking of CCL induced by uneven settlement of landfilled MSW. Copyright (c) 2014 John Wiley & Sons, Ltd. |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:000342672100002 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/3642]  |
| 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 | Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Xue, Qiang,Zhao, Ying,Li, Zhen-ze,et al. Numerical simulation on the cracking and failure law of compacted clay lining in landfill closure cover system[J]. INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,2014,38(15):1556-1584. |
| APA | Xue, Qiang,Zhao, Ying,Li, Zhen-ze,&Liu, Lei.(2014).Numerical simulation on the cracking and failure law of compacted clay lining in landfill closure cover system.INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS,38(15),1556-1584. |
| MLA | Xue, Qiang,et al."Numerical simulation on the cracking and failure law of compacted clay lining in landfill closure cover system".INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS 38.15(2014):1556-1584. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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