Grouting effect evaluation of fractured rock mass based on borehole televiewer observation

doi:10.1088/1755-1315/861/2/022034

	Grouting effect evaluation of fractured rock mass based on borehole televiewer observation
	Han,Zengqiang 1,2; Chen,Shuangyuan 1,2; Wang,Chao 1,2; Wang,Chuanying 2; Hu,Sheng 2
刊名	IOP Conference Series: Earth and Environmental Science
	2021-10-01
卷号	861 期号:2
关键词	grouting effect evaluation borehole televiewer cracks packer permeability test fractured rock mass
ISSN号	1755-1307
DOI	10.1088/1755-1315/861/2/022034
英文摘要	Abstract Grouting is a common means to improve the strength and anti-seepage performance of fractured rock mass. Due to crack concealment, evaluating the grouting effect is a critical problem. An evaluation method of the grouting effect based on borehole televiewer observation is proposed. The optical image of the borehole wall is obtained using a borehole televiewer observation, and the fracture-filling characteristics in the measured image are recognized. The evaluation index is established based on the number of filled and unfilled cracks, defined as the borehole fracture-filling index (BFFI). By analyzing the relationship between BFFI and packer permeability test results, the evaluation standard based on BFFI is established. The evaluation method is applied to a grouting test of a hydropower station’s fractured rock mass. The results show that (1) the grouting effect evaluation results of the packer permeability test and BFFI methods correlate well. (2) The grouting effect evaluation method not only visually shows the filling characteristics of grouting but also quantifies the grouting effect.
语种	英语
出版者	IOP Publishing
WOS记录号	IOP:EES_861_2_022034
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/28412]
专题	中科院武汉岩土力学所
作者单位	1.University of Chinese Academy of Sciences, Beijing 100049, China 2.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
推荐引用方式 GB/T 7714	Han,Zengqiang,Chen,Shuangyuan,Wang,Chao,et al. Grouting effect evaluation of fractured rock mass based on borehole televiewer observation[J]. IOP Conference Series: Earth and Environmental Science,2021,861(2).
APA	Han,Zengqiang,Chen,Shuangyuan,Wang,Chao,Wang,Chuanying,&Hu,Sheng.(2021).Grouting effect evaluation of fractured rock mass based on borehole televiewer observation.IOP Conference Series: Earth and Environmental Science,861(2).
MLA	Han,Zengqiang,et al."Grouting effect evaluation of fractured rock mass based on borehole televiewer observation".IOP Conference Series: Earth and Environmental Science 861.2(2021).