Numerical study of related factors affecting mechanical properties of fractured rock mass and its sensitivity analysis

Zhou, Cong; Gao, Wei; Hu, Chengjie; Chen, Xin; Cui, Shuang

doi:10.1007/s40571-022-00500-x

Cited by 6 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Liu 22 , and Yao et al 23 conducted laboratory-based uniaxial and triaxial compression tests to study the experimental specimens of cement mortar with different angle cracks, and the mechanical parameters, deformation parameters, creep properties, and failure criteria were analyzed based on experimental results. Gao 24 , and Zhou et al 25 studied the single fracture, entropy change, and “Bu” font fracture in different angles of experimental specimens with different types of rocks as experimental objects. Mo 26 obtained normal stress–strain curves by conducting fracture experiments on coarse sandstone, granite, and fine sandstone.…”

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Analysis of fractured soft rock characteristics in fault rupture zones and laneway shoring

Zhang,

Yang

et al. 2023

Sci Rep

View full text Add to dashboard Cite

Fault rupture is a common phenomenon in geotechnical engineering. To prevent rupture, laneway shoring is performed, prior to which, convergence deformation, failure criteria, and fracture development in soft rocks in the fault rupture zone are carefully analyzed. Then, a supporting structure corresponding to the actual situation of the soft rock in the rupture zone is created. Herein, the water-rich laneway shoring through the fault rupture zone of the Hongqingliang coal mine located in the Inner Mongolia Autonomous Region is taken as the research object. Then, the fracture development and characteristics of argillaceous siltstones and laneway shoring cross-fault rupture zone are studied. Site inspection, indoor and field tests, theoretical analysis, numerical simulation, and field monitoring were used for systematic fracture analysis. Results indicated that laneway shoring through the fault fracture zone in the Hongqingliang coal mine could help prevent disasters. This method was extended to laneway supports built through the fault rupture zones in mines in other areas of China.

show abstract

Section: Introductionmentioning

confidence: 99%

RETRACTED ARTICLE: Analysis of fractured soft rock characteristics in fault rupture zones and laneway shoring

Zhang,

Yang

et al. 2023

Sci Rep

View full text Add to dashboard Cite

show abstract

“…The particle flow method can be used to simulate the propagation path of crack, which can reveal the fracture characteristics of the material from a more intuitive aspect. In this numerical study, the smooth-joint contact model (SJM) is used to simulate the behavior of the wing cracks (Zhou et al 2022). It is because, as shown in Fig.…”

Section: Numerical Modelsmentioning

confidence: 99%

Theoretical study on fracture mechanism of rock bridge considering crack plastic propagation

Zhou¹,

Gao

Chen

2023

Preprint

Self Cite

View full text Add to dashboard Cite

The research on the fracture mechanism of rock bridge is helpful to better understanding the failure process of rocks. In this paper, in order to study the influence of wing crack propagation on the stability of rock bridges, a new maximum plastic zone size fracture criterion is established according to the extension of plastic zone accompanied by crack propagation. Based on the new crack fracture criterion, a corresponding critical judgment condition is proposed considering the influence of multi-crack interaction on the wing crack propagation. Then, the fracture mechanism of rock bridges from the perspective of plastic zone extension was explored based on three different crack distribution models (cracks of equal length in parallel). It was found that the fracture mode of the rock bridge is deeply influenced by the dip angle of the rock bridge in the case where the rock bridge is of equal length to the pre-existing crack. The contact speed and contact mode of plastic zone varies for different dip angles of the rock bridge, but all the contact of plastic zone will eventually cause plastic yielding in the rock bridge zone. And then, the secondary cracks always start to propagate in the range of the plastic zone formed by the wing cracks, and eventually the rock bridge forms a macroscopic fracture damage due to the propagation of the secondary cracks.

show abstract

A novel numerical modeling method for studying the failure mechanism of the main roof with different thicknesses in longwall coal seam mining

Yang,

Yue,

et al. 2024

Comp. Part. Mech.

View full text Add to dashboard Cite

Numerical study of related factors affecting mechanical properties of fractured rock mass and its sensitivity analysis

Cited by 6 publications

References 25 publications

RETRACTED ARTICLE: Analysis of fractured soft rock characteristics in fault rupture zones and laneway shoring

RETRACTED ARTICLE: Analysis of fractured soft rock characteristics in fault rupture zones and laneway shoring

Theoretical study on fracture mechanism of rock bridge considering crack plastic propagation

A novel numerical modeling method for studying the failure mechanism of the main roof with different thicknesses in longwall coal seam mining

Contact Info

Product

Resources

About