Tunnel face stability in heavily fractured rock masses that follow the Hoek–Brown failure criterion

Senent, S.; Mollon, Guilhem; Jimenez, Rafael E.

doi:10.1016/j.ijrmms.2013.01.004

Cited by 137 publications

(33 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[32] when geological strength parameters are I GS =10 and I GS =15, which shows the validity of proposed approach in this work. The effect of I GS on failure shape is shown in Fig.…”

Section:  supporting

confidence: 60%

“…Based on limit analysis method, SENENT et al [32] obtained the upper bound solution of collapse pressure with nonlinear Hoek-Brown failure criterion when they investigated the face stability of shallow rock tunnels. To verify the correctness of the method in this work, the introduced collapse pressure ratio of tunnel faces in deep stratum gained from this work, T /( ), d…”

Section: Comparisonmentioning

confidence: 99%

“…In the process of comparison, the parameters should be the same with those in Ref. [32], i.e., soil weight γ=25 kN/m 3 , tunnel diameter d=10 m, rock constant m i =5, disturbance factor D=0. It can be seen from Fig.…”

Section:  mentioning

confidence: 99%

See 2 more Smart Citations

Energy analysis of face stability of deep rock tunnels using nonlinear Hoek-Brown failure criterion

Zhang

2015

J. Cent. South Univ.

View full text Add to dashboard Cite

The nonlinear Hoek-Brown failure criterion was introduced to limit analysis by applying the tangent method. Based on the failure mechanism of double-logarithmic spiral curves on the face of deep rock tunnels, the analytical solutions of collapse pressure were derived through utilizing the virtual power principle in the case of pore water, and the optimal solutions of collapse pressure were obtained by using the optimization programs of mathematical model with regard of a maximum problem. In comparison with existing research with the same parameters, the consistency of change rule shows the validity of the proposed method. Moreover, parametric study indicates that nonlinear Hoek-Brown failure criterion and pore water pressure have great influence on collapse pressure and failure shape of tunnel faces in deep rock masses, particularly when the surrounding rock is too weak or under the condition of great disturbance and abundant ground water, and in this case, supporting measures should be intensified so as to prevent the occurrence of collapse.

show abstract

“…[32] when geological strength parameters are I GS =10 and I GS =15, which shows the validity of proposed approach in this work. The effect of I GS on failure shape is shown in Fig.…”

Section:  supporting

confidence: 60%

Section: Comparisonmentioning

confidence: 99%

See 1 more Smart Citation

Energy analysis of face stability of deep rock tunnels using nonlinear Hoek-Brown failure criterion

Zhang

2015

J. Cent. South Univ.

View full text Add to dashboard Cite

show abstract

“…Therefore, it is significant to determine the safe thickness of rock wall reasonably in construction process of karst tunnel [1][2].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation to determine the critical safe thickness of water-resisting rock wall based on FLAC3D

Chen¹,

Guo²

2017

Proceedings of the 2017 Global Conference on Mechanics and Civil Engineering (GCMCE 2017)

View full text Add to dashboard Cite

Caverns with high pressurized water ahead of tunnel face tend to cause water inrush. So, the determination of the critical safe thickness of the water-resisting rock wall to prevent water inrush geohazard is of great significance during karst tunnel construction. Firstly, to obtain the critical safety thickness of rock wall ahead of karst tunnel face, a numerical model based on FALAC3D and the method to determine the critical safe thickness are established. Then, a series of numerical tests planed by the orthogonal testing theory have been carried out. The rock mass level of rock wall, dip angle of strata, lateral pressure coefficient, cavity scale, water pressure and buried depth of tunnel on the critical safe thickness is studied. Finally, the regressive formula to determine the critical safe thickness of the water-resisting rock wall is established by means of numerical testing results. Taking for examples the Maluqing tunnel on Yiwan railway, the reliability and rationality of the proposed methods were proved, so providing reference for similar engineering projects.

show abstract

“…The pressurized tunnel face stability is always of concern in tunnel design and construction. Several methods for deterministic analyses were proposed by previous researchers (for instance, Leca and Dormieux 1990;Mollon et al 2010;Senent et al 2013). In recent years, however, there has been an increasing interest in the reliability analysis of tunnel face stability.…”

Section: Introductionmentioning

confidence: 99%

Reliability Analysis of Circular Tunnel Face Stability Obeying Hoek-Brown Failure Criterion

Zeng¹,

Senent²,

Jimenez

2014

Vulnerability, Uncertainty, and Risk

Self Cite

View full text Add to dashboard Cite

The first order reliability method (FORM) is applied to analyse the face stability of a circular tunnel driven by a pressurized shield, in a highly fractured rock mass characterized by the Hoek-Brown non-linear failure criterion. The collapse failure mode is studied in this paper. We employ a limit analysis approach with an advanced rotational failure mechanism. Rock mass parameters σ ci , GSI and m i are regarded as independent random variables with normal distributions. The reliability problem is solved numerically using FORM with an implicit limit-state function (LSF). A sensitivity analysis is conduct as well. The results show that: 1) The reliability index increases with an increasing support pressure; 2) all three random variables considered are resistance variables; 3) σ ci is found to be the most important variable with higher support pressures, whereas, GSI becomes the most influential variable with lower support pressures.

show abstract

Tunnel face stability in heavily fractured rock masses that follow the Hoek–Brown failure criterion

Cited by 137 publications

References 30 publications

Energy analysis of face stability of deep rock tunnels using nonlinear Hoek-Brown failure criterion

Energy analysis of face stability of deep rock tunnels using nonlinear Hoek-Brown failure criterion

Numerical simulation to determine the critical safe thickness of water-resisting rock wall based on FLAC3D

Reliability Analysis of Circular Tunnel Face Stability Obeying Hoek-Brown Failure Criterion

Contact Info

Product

Resources

About