Effect of transient coupled hydro-mechanical response on the longitudinal displacement profile of deep tunnels in saturated ground

Prassetyo, Simon Heru; Gutierrez, Marte

doi:10.1016/j.tust.2018.02.003

Cited by 16 publications

(36 citation statements)

References 22 publications

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“…In the i-th annulus, combining the failure criterion equation (19), the equilibrium equation (23), and the stress boundary conditions equations (28), the stresses can be expressed as in Eq. (29).…”

Section: Plastic Solutions For Circular Openingsmentioning

confidence: 99%

Numerical solutions for tunnels excavated in strain-softening rock masses considering a combined support system

Song

Rodríguez-Dono

2021

Applied Mathematical Modelling

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Section: Plastic Solutions For Circular Openingsmentioning

confidence: 99%

Numerical solutions for tunnels excavated in strain-softening rock masses considering a combined support system

Song

Rodríguez-Dono

2021

Applied Mathematical Modelling

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“…en, during July 22 to August 6, the roof burst several times, and on August 21, gangue and water from the roof suddenly poured into the working face, causing the accident. Nowadays, many underground projects involve water-force coupling [4,5], and for mine water damage, the water source and water inrush channel are highly hidden.…”

Section: Introductionmentioning

confidence: 99%

Water Inrush Mechanism of Roof Induced by the Fault Weakening Effect in the Coal Mining

Qiu

Zheng

Hong

et al. 2022

Mathematical Problems in Engineering

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The northern Guizhou coalfield exhibits complex geological conditions and well-developed structures. Hard rock formations are damaged by faults, causing frequent water inrush accidents. To study the damaging effect of faults on roof key strata and the mechanism of water inrush accidents, this paper chose the 5914 coal mining faces of the Longfeng coal mine as the engineering background, determined the water inrush source and key strata through field investigation, hydrochemical analysis, and theoretical calculation, and used RFPA-flow numerical simulation software to simulate the hydraulic coupling effect. The characteristics of the shear stress, damage degree, and hydraulic gradient were analyzed, and finally, the high-density electrical method was employed for simulation verification. The results indicated that the key stratum can control water inrush, but under the influence of faults, the roof forms multiple separation layers, and several sudden increases in displacement occur (the sudden jump phenomenon). A stress concentration area is formed in the head-end tunnel through the fault, and the number of AE events increased to 1150. The water-force gradient exhibits a uniform local large-scale evolution process, and finally, the height of the water-conducting fracture reaches 60 m through the aquifer. This height is 3 times that without fault influence. The numerical simulation results are consistent with the theoretical calculation and field analysis results, which verifies that the fault imposes a highly significant weakening effect on the key stratum, providing data support for later engineering.

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“…Furthermore, Nam and Bobet (2007) and Prassetyo and Gutierrez (2018) proposed empirical best-fit solutions for the normalised radial displacements ahead and behind the tunnel face for saturated ground with water flow, and rock masses were assumed as linear elastic materials in their research. However, the response of rock masses will differ depending on the selected model, as have been demonstrated by other researchers considering the post-failure behaviour of rock masses in purely mechanical models (Alejano et al, 2010;Alejano et al, 2012;Alonso et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Hydro-mechanical modelling and analysis of multi-stage tunnel excavations using a smoothed excavation method

Song

Rodríguez-Dono

Olivella

2021

Computers and Geotechnics

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Effect of transient coupled hydro-mechanical response on the longitudinal displacement profile of deep tunnels in saturated ground

Cited by 16 publications

References 22 publications

Numerical solutions for tunnels excavated in strain-softening rock masses considering a combined support system

Numerical solutions for tunnels excavated in strain-softening rock masses considering a combined support system

Water Inrush Mechanism of Roof Induced by the Fault Weakening Effect in the Coal Mining

Hydro-mechanical modelling and analysis of multi-stage tunnel excavations using a smoothed excavation method

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