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Article: Development of random mesostructure generating system of soil-rock mixture and study of its mesostructural mechanics based on numerical test

TitleDevelopment of random mesostructure generating system of soil-rock mixture and study of its mesostructural mechanics based on numerical test
Authors
KeywordsBiaxial Test
Mesostructural Mechanics (M-Sm)
Numerical Test
Random Mesostructure Generation System Of Soil-Rock Mixture (R-Srm2d)
Random Simulation
Rock And Soil Mechanics
Soil-Rock Mixture(S-Rm)
Issue Date2009
Citation
Yanshilixue Yu Gongcheng Xuebao/Chinese Journal Of Rock Mechanics And Engineering, 2009, v. 28 n. 8, p. 1652-1665 How to Cite?
Abstract
The mesostructure characteristics significantly affect meso-failure evolution mechanism and the macro-mechanical characteristics of soil-rock mixture (S-RM) under external forces. It is very important for the improvement of theoretical system of S-RM mechanics to study the mesostructural mechanics of S-RM based on its mesostructural characteristics. Accordingly, the statistics, geometry, random simulation techniques, etc. are used, and the random mesostructure generation system of S-RM based on arbitrary polygonal and elliptic rock blocks(R-SRM2D) has been developed. Based on R-SRM2D, a series of random S-RM samples with different rock block contents, granularity compositions, rock block spatial distributions and soil-rock interfaces are generated, which is used to study the relationship between mesostructure difference and meso-failure mechanics or macro- mechanical characteristics of S-RM by numerical test. Meaningful results have been obtained theoretically. It is indicated that with the increment of rock block content, the elastic modulus and uniaxial compressive strength of S-RM increase; at a certain rock block content, the macro-strength of S-RM decreases with the increment of rock block fractal dimension; the compressive strength of S-RM reaches maximum value when the longer axis of rock blocks is perpendicular or parallel to the principal stress axis; when the angle between the longer axis of rock blocks and the principal stress axis is equal to (45°-ψS/2), the compressive strength of S-RM reaches minimum value; the cementation action of soil-rock interface makes the macro-strength of S-RM increases obviously, whose uniaxial compressive strength increases nearly twice.
Persistent Identifierhttp://hdl.handle.net/10722/150505
ISSN
2013 SCImago Journal Rankings: 1.100
References

 

Author Affiliations
  1. The University of Hong Kong
  2. Institute of Geology and Geophysics Chinese Academy of Sciences
  3. China Institute of Water Resources and Hydropower Research
DC FieldValueLanguage
dc.contributor.authorXu, Wen_US
dc.contributor.authorHu, Ren_US
dc.contributor.authorYue, ZQen_US
dc.date.accessioned2012-06-26T06:05:16Z-
dc.date.available2012-06-26T06:05:16Z-
dc.date.issued2009en_US
dc.identifier.citationYanshilixue Yu Gongcheng Xuebao/Chinese Journal Of Rock Mechanics And Engineering, 2009, v. 28 n. 8, p. 1652-1665en_US
dc.identifier.issn1000-6915en_US
dc.identifier.urihttp://hdl.handle.net/10722/150505-
dc.description.abstractThe mesostructure characteristics significantly affect meso-failure evolution mechanism and the macro-mechanical characteristics of soil-rock mixture (S-RM) under external forces. It is very important for the improvement of theoretical system of S-RM mechanics to study the mesostructural mechanics of S-RM based on its mesostructural characteristics. Accordingly, the statistics, geometry, random simulation techniques, etc. are used, and the random mesostructure generation system of S-RM based on arbitrary polygonal and elliptic rock blocks(R-SRM2D) has been developed. Based on R-SRM2D, a series of random S-RM samples with different rock block contents, granularity compositions, rock block spatial distributions and soil-rock interfaces are generated, which is used to study the relationship between mesostructure difference and meso-failure mechanics or macro- mechanical characteristics of S-RM by numerical test. Meaningful results have been obtained theoretically. It is indicated that with the increment of rock block content, the elastic modulus and uniaxial compressive strength of S-RM increase; at a certain rock block content, the macro-strength of S-RM decreases with the increment of rock block fractal dimension; the compressive strength of S-RM reaches maximum value when the longer axis of rock blocks is perpendicular or parallel to the principal stress axis; when the angle between the longer axis of rock blocks and the principal stress axis is equal to (45°-ψS/2), the compressive strength of S-RM reaches minimum value; the cementation action of soil-rock interface makes the macro-strength of S-RM increases obviously, whose uniaxial compressive strength increases nearly twice.en_US
dc.languageengen_US
dc.relation.ispartofYanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineeringen_US
dc.subjectBiaxial Testen_US
dc.subjectMesostructural Mechanics (M-Sm)en_US
dc.subjectNumerical Testen_US
dc.subjectRandom Mesostructure Generation System Of Soil-Rock Mixture (R-Srm2d)en_US
dc.subjectRandom Simulationen_US
dc.subjectRock And Soil Mechanicsen_US
dc.subjectSoil-Rock Mixture(S-Rm)en_US
dc.titleDevelopment of random mesostructure generating system of soil-rock mixture and study of its mesostructural mechanics based on numerical testen_US
dc.typeArticleen_US
dc.identifier.emailYue, ZQ:yueqzq@hkucc.hku.hken_US
dc.identifier.authorityYue, ZQ=rp00209en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.scopuseid_2-s2.0-69249106489en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-69249106489&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume28en_US
dc.identifier.issue8en_US
dc.identifier.spage1652en_US
dc.identifier.epage1665en_US
dc.publisher.placeChinaen_US
dc.identifier.scopusauthoridXu, W=10140794200en_US
dc.identifier.scopusauthoridHu, R=7202640738en_US
dc.identifier.scopusauthoridYue, ZQ=7102782735en_US

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