A method for assessment of excavation damaged zone (EDZ) of a rock mass and its application to a dam foundation case

doi:10.1016/j.enggeo.2008.11.005

	A method for assessment of excavation damaged zone (EDZ) of a rock mass and its application to a dam foundation case
	Wu, Faquan; Liu, Jianyou; Liu, Tong; Zhuang, Huaze; Yan, Changgen
刊名	ENGINEERING GEOLOGY
	2009-03-23
卷号	104 期号:3-4 页码:254-262
关键词	Excavation disturbed zone (EDZ) Unloading strain energy Accumulative opening displacement of cracks Damage degree Borehole camera Xiaowan hydropower station
ISSN号	0013-7952
DOI	10.1016/j.enggeo.2008.11.005
文献子类	Article
英文摘要	Excavation of slope is an unloading process, and also an energy releasing process when the stress in the rock mass is unloaded, leading to the rebounding deformation towards the free face. And then a zone, namely excavation damaged zone (EDZ), will be formed near the excavation boundary, where the rock is damaged or disturbed and its physical, mechanical and hydraulic properties are greatly changed. This paper is to put forward a new method to quantify the extent and damage degree of the EDZ according to the unloading strain energy which is released in the process of excavation. A simple relationship between unloading strain epsilon and accumulative opening displacement T of cracks, epsilon = dT/dh, is proposed to describe the damage degree of rock mass in the EDZ, where h is the depth variable in normal direction of the open cracks.
WOS关键词	DISTURBED ZONE ; PERFORMANCE ; MINE
WOS研究方向	Engineering ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000264782600010
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/70394]
专题	中国科学院地质与地球物理研究所
通讯作者	Liu, Jianyou
作者单位	Chinese Acad Sci, Inst Geol & Geophys, Key Lab Engn Geomech, Beijing 100029, Peoples R China
推荐引用方式 GB/T 7714	Wu, Faquan,Liu, Jianyou,Liu, Tong,et al. A method for assessment of excavation damaged zone (EDZ) of a rock mass and its application to a dam foundation case[J]. ENGINEERING GEOLOGY,2009,104(3-4):254-262.
APA	Wu, Faquan,Liu, Jianyou,Liu, Tong,Zhuang, Huaze,&Yan, Changgen.(2009).A method for assessment of excavation damaged zone (EDZ) of a rock mass and its application to a dam foundation case.ENGINEERING GEOLOGY,104(3-4),254-262.
MLA	Wu, Faquan,et al."A method for assessment of excavation damaged zone (EDZ) of a rock mass and its application to a dam foundation case".ENGINEERING GEOLOGY 104.3-4(2009):254-262.