Numerical study on failure mechanism of tunnel in jointed rock mass

Jia, Peng; Tang, Chun’an

doi:10.1016/j.tust.2007.09.001

Cited by 171 publications

(45 citation statements)

References 13 publications

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“…6. Overall, the vertical displacement development above the two cavern roofs follows the same rule as in the case without the hydraulic pressure (Jia and Tang 2008).…”

Section: Simulation Results On the In Situ Stress Effectsupporting

confidence: 52%

“…Yeung and Leong (1997) used the discontinuous deformation analysis (DDA) to study the tunnel stability under variable joint distributions, including variable joint orientation and spacing. Jia and Tang (2008) used the Rock Failure Process Analysis (RFPA) code (twodimensional finite element code) to study the displacement development and the failure process for the underground tunnel. Different dip angles of the layered joints and variable lateral pressure coefficients are introduced for the stability analysis.…”

Section: Introductionmentioning

confidence: 99%

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Rock Cavern Stability Analysis Under Different Hydro-Geological Conditions Using the Coupled Hydro-Mechanical Model

et al. 2015

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Rock cavern stability has a close relationship with the uncertain geological parameters, such as the in situ stress, the joint configurations, and the joint mechanical properties. Therefore, the stability of the rock cavern should be studied with variable geological conditions. In this paper, the coupled hydro-mechanical model, which is under the framework of the discontinuous deformation analysis, is developed to study the underground cavern stability when considering the hydraulic pressure after excavation. Variable geological conditions are taken into account to study their impacts on the seepage rate and the cavern stability, including the in situ stress ratio, joint spacing, and joint dip angle. In addition, the two cases with static hydraulic pressure and without hydraulic pressure are also considered for the comparison. The numerical simulations demonstrate that the coupled approach can capture the cavern behavior better than the other two approaches without the coupling effects.

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“…6. Overall, the vertical displacement development above the two cavern roofs follows the same rule as in the case without the hydraulic pressure (Jia and Tang 2008).…”

Section: Simulation Results On the In Situ Stress Effectsupporting

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Rock Cavern Stability Analysis Under Different Hydro-Geological Conditions Using the Coupled Hydro-Mechanical Model

et al. 2015

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“…Such discontinuities can aggravate stress concentration and strength degradation, thus resulting in different patterns of rock mass failure around the opening compared with the patterns observed in isotropic rock masses. According to the number of discontinuities considered, related analytical models can be classified into three main categories, namely: a 'one-joint' model [10][11][12][13]; a 'single set of joints' model [8,[14][15][16][17][18]; and a 'multiple set of joints' model [19][20][21][22]. The 'one-joint' model is particularly used to investigate the effect of a fault, which is a large geological discontinuity, on the deformation and failure behavior of an underground opening.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulations of failure behavior around a circular opening in a non-persistently jointed rock mass under biaxial compression

Yang

Jing

Chen

2016

International Journal of Mining Science and Technology

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“…The rock blocks generated from the joints are analyzed for their volume, height, perimeter, safety factor and probability of occurrence (Songa et al, 2001). The numerical analysis indicates that both the dip angle of joints and the lateral pressure coefficient have significant impacts on the failure mode and displacement characters of tunnel (Jia and Tang, 2008). In this case study, many characteristic of rock tunnel are estimated, and the results are shown.…”

Section: Stability Analysis Of Rock Blockmentioning

confidence: 99%

The effect of discontinuities on stability of rock blocks in tunnel

Keykha¹

2011

Afr. J. Bus. Manage.

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This paper presents the results of an investigation that was carried out using important parameters, such as discontinuities in forming rock block and instability in tunnel. Discontinuities like bedding and joints are one of the most important factors when compared with parameters, such as engineering features of rock mass. In this review, numerous features like rock quality designation (RQD), rock classification (RMR), stress and strain and distributions of discontinuities in a sample tunnel were evaluated. However, most of them were suitable in the tunnel, but because of the creation of more intersection points in critical zone, the movement of blocks in tunnel roof and wall of the tunnel are possible. It also demonstrates simple factors such as step-over joints in rock mass, having important effect in instability.

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Numerical study on failure mechanism of tunnel in jointed rock mass

Cited by 171 publications

References 13 publications

Rock Cavern Stability Analysis Under Different Hydro-Geological Conditions Using the Coupled Hydro-Mechanical Model

Rock Cavern Stability Analysis Under Different Hydro-Geological Conditions Using the Coupled Hydro-Mechanical Model

Numerical simulations of failure behavior around a circular opening in a non-persistently jointed rock mass under biaxial compression

The effect of discontinuities on stability of rock blocks in tunnel

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