Academic Journal
Προβολή σε EDS

Experimental and Numerical Investigation on the Mechanical Behavior of Extremely Soft Coal-Like Material.

Λεπτομέρειες βιβλιογραφικής εγγραφής
Τίτλος: Experimental and Numerical Investigation on the Mechanical Behavior of Extremely Soft Coal-Like Material.
Συγγραφείς: Shan, Renliang1 (AUTHOR), Wu, Haotian1 (AUTHOR) 835285659@qq.com, Sun, Peng1 (AUTHOR), Huang, Gangjie1 (AUTHOR), Bai, Haobo1 (AUTHOR), Li, Yongzhen1 (AUTHOR), Bai, Yao1 (AUTHOR), Han, Tianyu1 (AUTHOR)
Πηγή: Rock Mechanics & Rock Engineering. Sep2026, p1-23. 23p.
Θεματικοί όροι: *Coal, *Damage models, *Crack propagation, *Composite materials, *Strains & stresses (Mechanics), *Factorial experiment designs, *Computer simulation, *Discrete element method
Περίληψη: \nHighlights: With the deepening of coal mining, the stability control of extremely soft coal seams has become a key issue restricting the safe and efficient production of mines. However, due to the difficulties in sampling and the low success rate of preparing standard specimens, the mechanical properties and damage evolution mechanisms of extremely soft coal remain poorly understood. Therefore, extremely soft coal from the Quandian Coal Mine was investigated. Natural coal specimens were obtained using an improved sampling procedure, and systematic mechanical tests were conducted to determine their physical and mechanical properties and failure modes. Subsequently, an orthogonal experiment was designed to develop an extremely soft coal-like material using coal powder as aggregate and sodium humate and cement as binders, and a multiple linear predictive model was established between the physical and mechanical parameters and the mixture factors. Based on this, combined with PFC3D particle flow numerical simulations, the crack propagation and damage evolution process of extremely soft coal under loading were revealed. Finally, a piecewise damage constitutive model was proposed using the void-closure point as the transition boundary and incorporating both the compaction stage and residual strength. The research results show that the developed coal-like material has a mechanical parameter difference of less than 7.4% compared to natural coal. The numerical simulation reproduced the tensile-dominated tensile-shear composite failure process of the extremely soft coal. The established piecewise damage constitutive model, compared to traditional models, can more accurately reflect the compaction characteristics and post-peak softening behavior of extremely soft coal. This study provides reliable experimental methods, numerical tools, and theoretical foundations for the mechanical behavior analysis of extremely soft coal bodies and roadway stability control.A novel extremely soft coal-like material is developed using a humate-cement binder system.Orthogonal design and a predictive model enable precise control of mechanical parameters.Failure mechanisms characterized by pronounced compaction and tensile–shear cracking are revealed.A PFC3D model visualizes crack evolution and force-chain degradation during progressive failure.A piecewise damage constitutive model capturing compaction and residual strength is proposed.A novel extremely soft coal-like material is developed using a humate-cement binder system.Orthogonal design and a predictive model enable precise control of mechanical parameters.Failure mechanisms characterized by pronounced compaction and tensile–shear cracking are revealed.A PFC3D model visualizes crack evolution and force-chain degradation during progressive failure.A piecewise damage constitutive model capturing compaction and residual strength is proposed. [ABSTRACT FROM AUTHOR]
Βάση Δεδομένων: Academic Search Index
FullText Links:
  – Type: other
Text:
  Availability: 0
CustomLinks:
  – Url: https://dx.doi.org/doi:10.1007/s00603-026-05965-3
    Name: EDS - Springer Nature Journals (s7799221)
    Category: fullText
    Text: View record at Springer
Header DbId: asx
DbLabel: Academic Search Index
An: 197099376
RelevancyScore: 1452
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 1452.42785644531
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Experimental and Numerical Investigation on the Mechanical Behavior of Extremely Soft Coal-Like Material.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Shan%2C+Renliang%22">Shan, Renliang</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Haotian%22">Wu, Haotian</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> 835285659@qq.com</i><br /><searchLink fieldCode="AR" term="%22Sun%2C+Peng%22">Sun, Peng</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Huang%2C+Gangjie%22">Huang, Gangjie</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bai%2C+Haobo%22">Bai, Haobo</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Yongzhen%22">Li, Yongzhen</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bai%2C+Yao%22">Bai, Yao</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Han%2C+Tianyu%22">Han, Tianyu</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Rock+Mechanics+%26+Rock+Engineering%22">Rock Mechanics & Rock Engineering</searchLink>. Sep2026, p1-23. 23p.
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: *<searchLink fieldCode="DE" term="%22Coal%22">Coal</searchLink><br />*<searchLink fieldCode="DE" term="%22Damage+models%22">Damage models</searchLink><br />*<searchLink fieldCode="DE" term="%22Crack+propagation%22">Crack propagation</searchLink><br />*<searchLink fieldCode="DE" term="%22Composite+materials%22">Composite materials</searchLink><br />*<searchLink fieldCode="DE" term="%22Strains+%26+stresses+%28Mechanics%29%22">Strains & stresses (Mechanics)</searchLink><br />*<searchLink fieldCode="DE" term="%22Factorial+experiment+designs%22">Factorial experiment designs</searchLink><br />*<searchLink fieldCode="DE" term="%22Computer+simulation%22">Computer simulation</searchLink><br />*<searchLink fieldCode="DE" term="%22Discrete+element+method%22">Discrete element method</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: \nHighlights: With the deepening of coal mining, the stability control of extremely soft coal seams has become a key issue restricting the safe and efficient production of mines. However, due to the difficulties in sampling and the low success rate of preparing standard specimens, the mechanical properties and damage evolution mechanisms of extremely soft coal remain poorly understood. Therefore, extremely soft coal from the Quandian Coal Mine was investigated. Natural coal specimens were obtained using an improved sampling procedure, and systematic mechanical tests were conducted to determine their physical and mechanical properties and failure modes. Subsequently, an orthogonal experiment was designed to develop an extremely soft coal-like material using coal powder as aggregate and sodium humate and cement as binders, and a multiple linear predictive model was established between the physical and mechanical parameters and the mixture factors. Based on this, combined with PFC3D particle flow numerical simulations, the crack propagation and damage evolution process of extremely soft coal under loading were revealed. Finally, a piecewise damage constitutive model was proposed using the void-closure point as the transition boundary and incorporating both the compaction stage and residual strength. The research results show that the developed coal-like material has a mechanical parameter difference of less than 7.4% compared to natural coal. The numerical simulation reproduced the tensile-dominated tensile-shear composite failure process of the extremely soft coal. The established piecewise damage constitutive model, compared to traditional models, can more accurately reflect the compaction characteristics and post-peak softening behavior of extremely soft coal. This study provides reliable experimental methods, numerical tools, and theoretical foundations for the mechanical behavior analysis of extremely soft coal bodies and roadway stability control.A novel extremely soft coal-like material is developed using a humate-cement binder system.Orthogonal design and a predictive model enable precise control of mechanical parameters.Failure mechanisms characterized by pronounced compaction and tensile–shear cracking are revealed.A PFC3D model visualizes crack evolution and force-chain degradation during progressive failure.A piecewise damage constitutive model capturing compaction and residual strength is proposed.A novel extremely soft coal-like material is developed using a humate-cement binder system.Orthogonal design and a predictive model enable precise control of mechanical parameters.Failure mechanisms characterized by pronounced compaction and tensile–shear cracking are revealed.A PFC3D model visualizes crack evolution and force-chain degradation during progressive failure.A piecewise damage constitutive model capturing compaction and residual strength is proposed. [ABSTRACT FROM AUTHOR]
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=asx&AN=197099376
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1007/s00603-026-05965-3
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 23
        StartPage: 1
    Subjects:
      – SubjectFull: Coal
        Type: general
      – SubjectFull: Damage models
        Type: general
      – SubjectFull: Crack propagation
        Type: general
      – SubjectFull: Composite materials
        Type: general
      – SubjectFull: Strains & stresses (Mechanics)
        Type: general
      – SubjectFull: Factorial experiment designs
        Type: general
      – SubjectFull: Computer simulation
        Type: general
      – SubjectFull: Discrete element method
        Type: general
    Titles:
      – TitleFull: Experimental and Numerical Investigation on the Mechanical Behavior of Extremely Soft Coal-Like Material.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Shan, Renliang
      – PersonEntity:
          Name:
            NameFull: Wu, Haotian
      – PersonEntity:
          Name:
            NameFull: Sun, Peng
      – PersonEntity:
          Name:
            NameFull: Huang, Gangjie
      – PersonEntity:
          Name:
            NameFull: Bai, Haobo
      – PersonEntity:
          Name:
            NameFull: Li, Yongzhen
      – PersonEntity:
          Name:
            NameFull: Bai, Yao
      – PersonEntity:
          Name:
            NameFull: Han, Tianyu
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 17
              M: 09
              Text: Sep2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 07232632
          Titles:
            – TitleFull: Rock Mechanics & Rock Engineering
              Type: main
ResultId 1