Time-Dependent Damage Investigation of Rock Mass in an In Situ Experimental Tunnel

doi:10.3390/ma5081389

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

	Time-Dependent Damage Investigation of Rock Mass in an In Situ Experimental Tunnel
	Jiang, Quan; Cui, Jie; Chen, Jing
刊名	MATERIALS
	2012
卷号	5 期号:8 页码:1389-1403
关键词	time-dependent damage rock mass in situ experiment time-dependent damage model damage rehabilitation
ISSN号	1996-1944
DOI	10.3390/ma5081389
英文摘要	In underground tunnels or caverns, time-dependent deformation or failure of rock mass, such as extending cracks, gradual rock falls, etc., are a costly irritant and a major safety concern if the time-dependent damage of surrounding rock is serious. To understand the damage evolution of rock mass in underground engineering, an in situ experimental testing was carried out in a large belowground tunnel with a scale of 28.5 m in width, 21 m in height and 352 m in length. The time-dependent damage of rock mass was detected in succession by an ultrasonic wave test after excavation. The testing results showed that the time-dependent damage of rock mass could last a long time, i.e., nearly 30 days. Regression analysis of damage factors defined by wave velocity, resulted in the time-dependent evolutional damage equation of rock mass, which corresponded with logarithmic format. A damage viscoelastic-plastic model was developed to describe the exposed time-dependent deterioration of rock mass by field test, such as convergence of time-dependent damage, deterioration of elastic modules and logarithmic format of damage factor. Furthermore, the remedial measures for damaged surrounding rock were discussed based on the measured results and the conception of damage compensation, which provides new clues for underground engineering design.
WOS研究方向	Materials Science
语种	英语
出版者	MDPI AG
WOS记录号	WOS:000308209900005
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3360]
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	Jiang, Quan,Cui, Jie,Chen, Jing. Time-Dependent Damage Investigation of Rock Mass in an In Situ Experimental Tunnel[J]. MATERIALS,2012,5(8):1389-1403.
APA	Jiang, Quan,Cui, Jie,&Chen, Jing.(2012).Time-Dependent Damage Investigation of Rock Mass in an In Situ Experimental Tunnel.MATERIALS,5(8),1389-1403.
MLA	Jiang, Quan,et al."Time-Dependent Damage Investigation of Rock Mass in an In Situ Experimental Tunnel".MATERIALS 5.8(2012):1389-1403.