Elasto-plastic analysis of the surrounding rock mass in circular tunnel based on the generalized nonlinear unified strength theory

Huang, Xiujie; Zhang, Jixun; Liu, Yang; Shikou, Yang; Wang, Xingli

doi:10.1016/j.ijmst.2016.05.043

Cited by 19 publications

(12 citation statements)

References 6 publications

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“…e stress equations for the plastic fracture zone and the elastic zone of the roadway floor surrounding rock under inhomogeneous stress can be described by (14).…”

Section: E Solution Of Plastic Failure Zone Range Of Roadwaymentioning

confidence: 99%

“…Although the elastic-plastic failure of the roadway surrounding rocks can be considered as a plane strain problem, in the field engineering practice, the roadway surrounding rock is mostly in the triaxial compression state because of the distribution of residual stresses, the hinge of the fractured rock, and the existence of the supporting structure [6][7][8][9][10]. Owing to the single shear strength criterion, which considers the maximum principal stress and the minimum principal stress and completely neglects the influence of the intermediate principal stress, there is a great difference between the deformation and the actual situation of the surrounding rock of the plastic zone; in the mechanical analysis, the stress on the roadway section is only considered and the effect of axial stress is ignored [11][12][13][14][15][16]. Recently, many researchers have focused on studying the influence of the roadway axial principal stress to the plastic analysis and timedependent change in the plastic zone of the deep circular roadway and hope the results will fit the specific reality better.…”

Section: Introductionmentioning

confidence: 99%

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Plastic Failure Analysis of Roadway Floor Surrounding Rocks Based on Unified Strength Theory

Zheng

2018

Advances in Civil Engineering

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Taking the whole surrounding rock of an excavation roadway as the research object, the elastoplastic failure mechanics analysis of the surrounding rock body of the excavated roadway under three-directional in situ stresses is carried out by using the knowledge of generalized plane strain problems and unified strength theory, and the equations are derived for the elasticplastic zone stress together with the plastic fracture range of the roadway floor surrounding rock under three-directional in situ stresses. At the same time, by means of the conclusion of mechanical analysis and the results of in situ detection of in situ stress in the Changcun mining area, the stability of the roadway floor surrounding rock was analyzed. e analysis reveals the influence on the stability of the roadway floor surrounding rock between the spatial relationship with the different in situ stresses and the roadway layout; meanwhile, it calculates the range of the plastic failure zone and the stress value of the #1 roadway floor in the S6 mining area of Changcun mine, which provides a reliable theoretical mechanical reference for research on roadway floor heave control technology.

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“…e stress equations for the plastic fracture zone and the elastic zone of the roadway floor surrounding rock under inhomogeneous stress can be described by (14).…”

Section: E Solution Of Plastic Failure Zone Range Of Roadwaymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Plastic Failure Analysis of Roadway Floor Surrounding Rocks Based on Unified Strength Theory

Zheng

2018

Advances in Civil Engineering

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“…e parameters G, c, and φ are shear modulus, cohesion, and internal friction angle of rock mass, respectively [20][21][22].…”

Section: Compared With the Mohr-coulomb Criterion In Engineering Applmentioning

confidence: 99%

“…According to the literature [21], the equation of plastic radius derived from Mohr-Coulomb criterion is as follows:…”

Section: Comparison Of Plastic Zone Radiusmentioning

confidence: 99%

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Analytical Solution of Tunnel Surrounding Rock for Stress and Displacement Based on Lade–Duncan Criterion

Zhu

Yang

Gao

et al. 2018

Advances in Civil Engineering

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e deformation and failure of tunnel surrounding rock is the result of tunnel excavation disturbance and rock stress release. When the local stress of surrounding rock exceeds the elastic limit of rock mass, the plastic analysis of surrounding rock must be carried out to judge the stability of tunnel. In this study, the Lade-Duncan yield criterion is used to calculate the analytic solutions for the surrounding rock in a tunnel, and the radius and displacement of the plastic zone are deduced using an equilibrium equation.e plastic zone radius and displacement based on Lade-Duncan criterion and Mohr-Coulomb criterion were compared by using single-factor analysis method under the different internal friction angles, in situ stresses, and support resistances. e results show that the solutions of the radius and displacement of plastic zone calculated by the Lade-Duncan criterion are close to those of Mohr-Coulomb criterion under the high internal friction angle and support resistance or low in situ rock stress; however, the radius and displacement of the plastic zone calculated by the Lade-Duncan criterion are larger under normal circumstances, and the Lade-Duncan criterion is more applicable to the stability analysis of the surrounding rock in a tunnel.

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Analysis of Deformation of Circular Roadway Considering Effects of Intermediate Principal Stress and Dilatancy

Liu

2019

Geotech Geol Eng

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Elasto-plastic analysis of the surrounding rock mass in circular tunnel based on the generalized nonlinear unified strength theory

Cited by 19 publications

References 6 publications

Plastic Failure Analysis of Roadway Floor Surrounding Rocks Based on Unified Strength Theory

Plastic Failure Analysis of Roadway Floor Surrounding Rocks Based on Unified Strength Theory

Analytical Solution of Tunnel Surrounding Rock for Stress and Displacement Based on Lade–Duncan Criterion

Analysis of Deformation of Circular Roadway Considering Effects of Intermediate Principal Stress and Dilatancy

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