Frost heaving and frost cracking of elliptical cavities (fractures) in low-permeability rock
文献类型：期刊论文
| 作者 | Huang, Shibing1,2; Liu, Quansheng3; Liu, Yanzhang1,2; Kang, Yongshui3; Cheng, Aiping1,2; Ye, Zuyang1,2 |
| 刊名 | ENGINEERING GEOLOGY
 |
| 出版日期 | 2018 |
| 卷号 | 234页码:1-10 |
| 关键词 | Frost heaving pressure Thermal stress Frost cracking Elliptical cavity Maximum tensile stress Stress intensity factor |
| ISSN号 | 0013-7952 |
| DOI | 10.1016/j.enggeo.2017.12.024 |
| 英文摘要 | A 9% expansion of freezing water in the elliptical cavities (fractures) of rock leads to frost heaving pressure and thermal stress, which are the main cause of the freeze-thaw damage of a fractured rock mass. Considering the influence of thermal stress and water flow in elliptical cavities (fractures), a mathematical model for predicting frost heaving pressure in the elliptical cavities (fractures) of rock is presented, assuming that the rock matrix is impermeable. The maximum tensile stress and frost cracking angle on the elliptical cavity are deduced and the critical condition for simplifying the elliptical cavity to planar fracture is suggested based on the method of complex variable function and elastic mechanics theory. Moreover, the effects of the main parameters on frost heaving pressure and frost-cracking conditions are determined to investigate the frost cracking of water-filled elliptical cavities (fractures). The flow flux of water, the aspect ratios of cavities (fractures) and the elastic moduli of rock have a great direct influence on the frost heaving pressure and cracking angle, whereas the dip angle of the cavity (fracture) and the thermal expansion coefficient of rock indirectly affect them by changing the thermal stress. It is suggested that the stress intensity factor is adopted to predict the frost propagation of planar elliptical cavities only if the aspect ratio exceeds fifteen. |
| WOS研究方向 | Engineering ; Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000426229500001 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4226]  |
| 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.Wuhan Univ Sci & Technol, Sch Resources & Environm Engn ; 2.Wuhan Univ Sci & Technol, Hubei Key Lab Efficient Utilizat & Agglomerat Met ; 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn |
| 推荐引用方式 GB/T 7714 | Huang, Shibing,Liu, Quansheng,Liu, Yanzhang,et al. Frost heaving and frost cracking of elliptical cavities (fractures) in low-permeability rock[J]. ENGINEERING GEOLOGY,2018,234:1-10. |
| APA | Huang, Shibing,Liu, Quansheng,Liu, Yanzhang,Kang, Yongshui,Cheng, Aiping,&Ye, Zuyang.(2018).Frost heaving and frost cracking of elliptical cavities (fractures) in low-permeability rock.ENGINEERING GEOLOGY,234,1-10. |
| MLA | Huang, Shibing,et al."Frost heaving and frost cracking of elliptical cavities (fractures) in low-permeability rock".ENGINEERING GEOLOGY 234(2018):1-10. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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