Frost heaving and frost cracking of elliptical cavities (fractures) in low-permeability rock

doi:10.1016/j.enggeo.2017.12.024

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Frost heaving and frost cracking of elliptical cavities (fractures) in low-permeability rock
	Huang, Shibing 1,2; Liu, Quansheng 3; Liu, Yanzhang 1,2; Kang, Yongshui 3; Cheng, Aiping 1,2; Ye, Zuyang 1,2
刊名	ENGINEERING GEOLOGY
	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
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000426229500001
内容类型	期刊论文
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.