Experimental investigation on the transmissivity of fractured granite filled with different materials

doi:10.1007/s10064-021-02521-x

	Experimental investigation on the transmissivity of fractured granite filled with different materials
	Sui, Qun 2,3; Yang, Diansen 2,3; Chen, Weizhong 2,3; Yang, Shengqi 1
刊名	BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
	2022
卷号	81 期号:1 页码:12
关键词	Fractured granite Transmissivity Filling material Confining stress Fracture roughness
ISSN号	1435-9529
DOI	10.1007/s10064-021-02521-x
英文摘要	The disposal of high-level radioactive waste (HLW) is one of the most challenging issues globally, and granite is considered an ideal host rock. In this paper, we present an experimental study on the transmissivity of fractured granite filled with different materials. A series of tests were carried out to study the effects of different factors (filling material, confining stress, and fracture roughness) on fracture transmissivity. Our results show that the properties of the filling material play a critical role in the transmissivity of fractured granite. Specifically, quartz sand significantly increases the transmissivity of the fractured granite, but the larger the sand particle size, the slower the transmissivity increases. Conversely, compared with fractured samples without any filling material, bentonite as a filling material decreases fracture transmissivity. Furthermore, confining stress also exhibits a great effect on transmissivity, and high stress compresses the filling material, resulting in a reduction in transmissivity. In addition, confining stress has a larger impact on the transmissivity of sand-filled fractured samples than others. We quantify the roughness of the fractures to examine its impact on the transmissivity. The results show that larger roughness reduces transmissivity for the unfilled fractures, but has an opposite effect on sand-filled fractures, while the results of bentonite-filled fractures are scattered. This study could provide an important guidance for evaluating the safety of HLW repositories.
资助项目	National Natural Science Foundation of China[51879260] ; National Natural Science Foundation of China[51879258] ; National Natural Science Foundation of China[11672099] ; National Natural Science Foundation of China[U1806226] ; CAS Interdisciplinary Innovation Team[JCTD-2018-17] ; Key Research Program of the Chinese Academy of Sciences[KFZD-SW-423] ; Hubei Provincial Natural Science Foundation of China[2018CFA012]
WOS研究方向	Engineering ; Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000728897900001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/30993]
专题	中科院武汉岩土力学所
通讯作者	Yang, Diansen
作者单位	1.China Univ Min & Technol, Sch Mech & Civil Engn, State Key Lab Geomech & Deep Underground Engn, Xuzhou 221116, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Sui, Qun,Yang, Diansen,Chen, Weizhong,et al. Experimental investigation on the transmissivity of fractured granite filled with different materials[J]. BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,2022,81(1):12.
APA	Sui, Qun,Yang, Diansen,Chen, Weizhong,&Yang, Shengqi.(2022).Experimental investigation on the transmissivity of fractured granite filled with different materials.BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT,81(1),12.
MLA	Sui, Qun,et al."Experimental investigation on the transmissivity of fractured granite filled with different materials".BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT 81.1(2022):12.