IGGCAS OpenIR  > 页岩气与地质工程院重点实验室
Empirical ratio of dynamic to static stiffness for propped artificial fractures under variable normal stress
Zhou, Jian1,2,3; Zhang, Luqing1,2; Qi, Shengwen1,2,4; Yang, Duoxing5
2020-08-01
Source PublicationENGINEERING GEOLOGY
ISSN0013-7952
Volume273Pages:12
AbstractThe stiffness coefficient is a key parameter of rock fractures that controls the properties and behavior of a rock mass. According to the displacement discontinuity theory, the dynamic stiffness of rock fractures can be back analyzed using stress wave propagation. This study aims to measure the dynamic stiffness of rock fractures then develop an empirical ratio to describe the relationship between dynamic and static stiffness. Propped artificially fractured shale and granitic rock samples are employed. Mechanical and ultrasonic tests are conducted on two artificial rock fractures during uniaxial loading and unloading. As normal stress changes from 1 MPa to 50 MPa, the average dynamic normal stiffness of shale and granitic rock fractures changes from 330 GPa/m to 1960 GPa/m and from 90 GPa/m to 2320 GPa/m, respectively. For both artificial fractures, the dynamic stiffness is higher than the static stiffness but approaches the static stiffness with increasing normal stress. The ratio of dynamic to static normal stiffness is approximately 2.0 at a normal stress of 15 MPa; this ratio approaches 1.0 with increasing normal stress and varies widely under low normal stress. This study provides a method for evaluating the static or dynamic stiffness of rock fractures, which has important applications for seismic surveys or acoustic logs in the field of geological engineering.
KeywordPropped artificial fracture Nonlinear deformation Displacement discontinuity method Dynamic stiffness Static stiffness
DOI10.1016/j.enggeo.2020.105683
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council
WOS KeywordSINGLE FRACTURES ; WAVE ATTENUATION ; FLUID-FLOW ; ROCK ; BEHAVIOR ; SLOPE ; FAILURE ; TRANSMISSION ; PROPAGATION ; INTERFACE
Language英语
Funding ProjectNational Natural Science Foundation of China[41972287] ; National Natural Science Foundation of China[41672321] ; National Natural Science Foundation of China[41502307] ; China Postdoctoral Science Foundation[2019T120133] ; China Postdoctoral Science Foundation[2018M630204] ; China Scholarship Council[201804910293]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council ; China Scholarship Council
WOS Research AreaEngineering ; Geology
WOS SubjectEngineering, Geological ; Geosciences, Multidisciplinary
WOS IDWOS:000539424500005
PublisherELSEVIER
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/97167
Collection页岩气与地质工程院重点实验室
Corresponding AuthorZhou, Jian
Affiliation1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China
2.Chinese Acad Sci, Inst Earth Sci, Beijing 100029, Peoples R China
3.CSIRO Energy, Private Bag 10, Clayton, Vic 3169, Australia
4.Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
5.China Earthquake Adm, Inst Crustal Dynam, Beijing 100085, Peoples R China
First Author AffilicationKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Corresponding Author AffilicationKey Laboratory of Shale Gas and Geoengineering, Institute of Geology and Geophysics, Chinese Academy of Sciences;  Institute of Geology and Geophysics, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Zhou, Jian,Zhang, Luqing,Qi, Shengwen,et al. Empirical ratio of dynamic to static stiffness for propped artificial fractures under variable normal stress[J]. ENGINEERING GEOLOGY,2020,273:12.
APA Zhou, Jian,Zhang, Luqing,Qi, Shengwen,&Yang, Duoxing.(2020).Empirical ratio of dynamic to static stiffness for propped artificial fractures under variable normal stress.ENGINEERING GEOLOGY,273,12.
MLA Zhou, Jian,et al."Empirical ratio of dynamic to static stiffness for propped artificial fractures under variable normal stress".ENGINEERING GEOLOGY 273(2020):12.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Zhou, Jian]'s Articles
[Zhang, Luqing]'s Articles
[Qi, Shengwen]'s Articles
Baidu academic
Similar articles in Baidu academic
[Zhou, Jian]'s Articles
[Zhang, Luqing]'s Articles
[Qi, Shengwen]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Zhou, Jian]'s Articles
[Zhang, Luqing]'s Articles
[Qi, Shengwen]'s Articles
Terms of Use
No data!
Social Bookmark/Share
Add to CiteULike Add to Connotea Add to Del.icio.us Add to Digg Add to Reddit Add to Technorati
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.