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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
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TitleDevelopment of random mesostructure generating system of soil-rock mixture and study of its mesostructural mechanics based on numerical test
 
AuthorsXu, W3
Hu, R2
Yue, ZQ1
 
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
 
CitationYanshilixue Yu Gongcheng Xuebao/Chinese Journal Of Rock Mechanics And Engineering, 2009, v. 28 n. 8, p. 1652-1665 [How to Cite?]
 
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.
 
ISSN1000-6915
2012 SCImago Journal Rankings: 1.173
 
ReferencesReferences in Scopus
 
DC FieldValue
dc.contributor.authorXu, W
 
dc.contributor.authorHu, R
 
dc.contributor.authorYue, ZQ
 
dc.date.accessioned2012-06-26T06:05:16Z
 
dc.date.available2012-06-26T06:05:16Z
 
dc.date.issued2009
 
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.
 
dc.description.natureLink_to_subscribed_fulltext
 
dc.identifier.citationYanshilixue Yu Gongcheng Xuebao/Chinese Journal Of Rock Mechanics And Engineering, 2009, v. 28 n. 8, p. 1652-1665 [How to Cite?]
 
dc.identifier.epage1665
 
dc.identifier.issn1000-6915
2012 SCImago Journal Rankings: 1.173
 
dc.identifier.issue8
 
dc.identifier.scopuseid_2-s2.0-69249106489
 
dc.identifier.spage1652
 
dc.identifier.urihttp://hdl.handle.net/10722/150505
 
dc.identifier.volume28
 
dc.languageeng
 
dc.publisher.placeChina
 
dc.relation.ispartofYanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
 
dc.relation.referencesReferences in Scopus
 
dc.subjectBiaxial Test
 
dc.subjectMesostructural Mechanics (M-Sm)
 
dc.subjectNumerical Test
 
dc.subjectRandom Mesostructure Generation System Of Soil-Rock Mixture (R-Srm2d)
 
dc.subjectRandom Simulation
 
dc.subjectRock And Soil Mechanics
 
dc.subjectSoil-Rock Mixture(S-Rm)
 
dc.titleDevelopment of random mesostructure generating system of soil-rock mixture and study of its mesostructural mechanics based on numerical test
 
dc.typeArticle
 
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<description.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&#176;-&#968;S/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.</description.abstract>
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<subject>Numerical Test</subject>
<subject>Random Mesostructure Generation System Of Soil-Rock Mixture (R-Srm2d)</subject>
<subject>Random Simulation</subject>
<subject>Rock And Soil Mechanics</subject>
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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