In situ test of excavation damaged zone of columnar jointed rock masses under different borehole conditions

doi:10.1007/s10064-020-02100-6

	In situ test of excavation damaged zone of columnar jointed rock masses under different borehole conditions
	Sun, Qiancheng 3,4; Li, Shaojun 4; Guo, Haosen 2; Zheng, Minzong 4; Yang, Zhiyue 1
刊名	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
	2021-01-29
页码	17
关键词	Different borehole conditions Excavation damaged zones (EDZ) Highly damaged zones (HDZ) Digital borehole televiewer Acoustic wave testing
ISSN号	1435-9529
DOI	10.1007/s10064-020-02100-6
英文摘要	The depths of excavation damaged zone (EDZ) and highly damaged zone (HDZ) in rock masses around a tunnel are generally measured by borehole testing. The test results of boreholes with different angles and diameters varied due to the complex structure and anisotropy of such jointed rock masses, therefore, accurately determining the depth of EDZ and HDZ in jointed rock masses is essential to their engineering safety. By investigating columnar jointed basalt in Baihetan Hydropower Station (Sichuan Province, China), a comprehensive method based on the substantial test results has been proposed for determining the depth of EDZ according to HDZ in jointed rock masses. The method is applicable in rock masses where the acoustic wave testing cannot be conducted. The borehole test results in both EDZ and original rock under different drilling conditions were obtained, and revealed that the depth of EDZ was related to borehole angle rather than diameter, while the degree of damage to the original rock in the borehole was more likely to be influenced by the borehole diameter than the angle. The proposed method for determining the depth of EDZ provides a new idea for determining the depth of EDZ in surrounding rocks. Additionally, the data provide an insight into the borehole testing method and a basis for supporting design and stability control of columnar jointed rock masses.
资助项目	National Natural Science Foundation of China[U1765206] ; National Natural Science Foundation of China[51909136] ; Open Research Fund of The State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z018012] ; Open Research Fund of Key Laboratory of Geological Hazards in the Three Gorges Reservoir Area (China Three Gorges University), Ministry of Education[2018KDZ13]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000612902700001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25609]
专题	中科院武汉岩土力学所
通讯作者	Li, Shaojun
作者单位	1.China Three Gorges Construct Management Co Ltd, Chengdu 610041, Peoples R China 2.East China Jiaotong Univ, Nanchang 330000, Jiangxi, Peoples R China 3.China Three Gorges Univ, Minist Educ, Key Lab Geol Hazards Gorges Reservoir Area 3, Yichang 443000, Peoples R China 4.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China
推荐引用方式 GB/T 7714	Sun, Qiancheng,Li, Shaojun,Guo, Haosen,et al. In situ test of excavation damaged zone of columnar jointed rock masses under different borehole conditions[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2021:17.
APA	Sun, Qiancheng,Li, Shaojun,Guo, Haosen,Zheng, Minzong,&Yang, Zhiyue.(2021).In situ test of excavation damaged zone of columnar jointed rock masses under different borehole conditions.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,17.
MLA	Sun, Qiancheng,et al."In situ test of excavation damaged zone of columnar jointed rock masses under different borehole conditions".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT (2021):17.