The Hoek–Brown Failure Criterion

Eberhardt, E.

doi:10.1007/s00603-012-0276-4

Cited by 221 publications

(66 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We selected the Hoek and Brown criterion adapted to rocks with anisotropic strength [30,31] for a more accurate account of the experimental results. The Hoek and Brown criterion has been applied successfully to a wide range of intact and fractured rock types [44,45] by practitioners in rock engineering for over 30 years. The use of the Hoek and Brown criterion in petroleum engineering is not common because of the uncertainties related to the determination of the controlling parameters.…”

Section: Selection Of Strength Criteria For Rocks With Strength Anisomentioning

confidence: 99%

See 1 more Smart Citation

Prediction of Mud Pressures for the Stability of Wellbores Drilled in Transversely Isotropic Rocks

Deangeli

Omwanghe

2018

Energies

View full text Add to dashboard Cite

Serious borehole instability problems are often related to the presence of weakness planes in rock formations. In this study, we investigated the stability of wellbores drilled along a principal direction and parallel to the weakness planes. We used three different strength criteria (weakness plane model, Hoek and Brown and Nova and Zaninetti) to calculate the mud pressures to avoid slip and tensile failure along the weakness planes. We identified the orientation of the weakness planes that generate the most critical slip condition as a function of the friction angle of the planes. We also identified the range of orientations of the weakness planes that corresponds with the lower mud pressure window. We confirmed the validity of the proposed relationships with comparative stability analyses by using analytical solutions and numerical simulations (Ubiquitous Joint Model, FLAC). We found that the mud pressures calculated with the Hoek and Brown criterion show a particular trend, which cannot be predicted by the weakness plane model. We provided two normalized stability charts to predict mud pressures to prevent slip along the weakness planes in the critical slip condition. Finally, we corroborated our findings by simulating the stability of wellbores drilled in the Pedernales Field (Venezuela) and in oil fields located in Bohai Bay (China).

show abstract

Section: Selection Of Strength Criteria For Rocks With Strength Anisomentioning

confidence: 99%

“…The Hoek and Brown criterion [29] is an empirical relationship used to describe the non-linear increase in peak strength of isotropic rock with increasing confining stress [44]. The criterion was developed to estimate the strength of rock masses and intact rocks.…”

Section: The Hoek and Brown Criterion Applied To Transversely Isotropmentioning

confidence: 99%

Prediction of Mud Pressures for the Stability of Wellbores Drilled in Transversely Isotropic Rocks

Deangeli

Omwanghe

2018

Energies

View full text Add to dashboard Cite

show abstract

“…With no volume change, linear Mohr-Coulomb failure is no longer appropriate. Under these conditions, the failure envelope as plotted on a Mohr stress diagram flattens (e.g., by the Von Mises criterion [e.g., van Der Pluijm and Marshak, 2004]), implying predominantly grain boundary sliding rather than dilatant cracking as the main mechanism of brittle deformation and giving an angle of 90 ∘ between optimally oriented conjugate shear zones [van Der Pluijm and Marshak, 2004;Eberhardt, 2012]. As a consequence, our observed value of 80 ∘ may reflect the formation of these deep faults in an environment that requires a significant level of grain boundary sliding.…”

Section: Complexity Of Rupture and Breaking Of Young Faultsmentioning

confidence: 99%

The 2012 M_w 8.6 Wharton Basin sequence: A cascade of great earthquakes generated by near‐orthogonal, young, oceanic mantle faults

et al. 2015

View full text Add to dashboard Cite

We improve constraints on the slip distribution and geometry of faults involved in the complex, multisegment, M w 8.6 April 2012 Wharton Basin earthquake sequence by joint inversion of high-rate GPS data from the Sumatran GPS Array (SuGAr), teleseismic observations, source time functions from broadband surface waves, and far-field static GPS displacements. This sequence occurred under the Indian Ocean, ∼400 km offshore Sumatra. The events are extraordinary for their unprecedented rupture of multiple cross faults, deep slip, large strike-slip magnitude, and potential role in the formation of a discrete plate boundary between the Indian and Australian plates. The SuGAr recorded static displacements of up to ∼22 cm, along with time-varying arrivals from the complex faulting, which indicate that the majority of moment release was on young, WNW trending, right-lateral faults, counter to initial expectations that an old, lithospheric, NNE trending fracture zone played the primary role. The new faults are optimally oriented to accommodate the present-day stress field. Not only was the greatest moment released on the younger faults, but it was these that sustained very deep slip and high stress drop (>20 MPa). The rupture may have extended to depths of up to 60 km, suggesting that the oceanic lithosphere in the northern Wharton Basin may be cold and strong enough to sustain brittle failure at such depths. Alternatively, the rupture may have occurred with an alternative weakening mechanism, such as thermal runaway.

show abstract

“…The difference in confinement of 0.43 MPa causes the difference in strength of 3.41 MPa. According to Eberhardt (2012), non-linear Equation 9 is dependent on the confinement, in which the criterion is controlled by the major and minor principal stresses. However, as all five tunnel structures were (or will be) excavated into weak rock at shallow depths, the ci plays a dominant role in estimating the strength of the soft rock masses.…”

Section: Discussionmentioning

confidence: 99%

“…The Hoek-Brown criterion is non-linear (Eberhardt, 2012), and is suitable for hard rock material. The failure of hard rock follows a non-linear envelope on the graph of major and minor principal stresses, (1 and 3), (Hoek & Brown, 1994):…”

Section: Introductionmentioning

confidence: 99%

Practical Applications of Strength Criteria in Civil Engineering Designs for Shallow Tunnels in Weak Rock

Agustawijaya¹

2019

IJTech

View full text Add to dashboard Cite

A number of rock strength criteria are available for use in civil engineering designs. Although considerable uncertainty in geological conditions and variability in rock properties is involved in estimating rock mass strength, it may be necessary to divide the criteria into two categories based on rock failure behavior: linear and non-linear. In this research, both types of criteria are applied to estimate the strength of weak rock masses at five different shallow tunnel sites. The results show varying strength values. The variation in weak rock properties affects the variability of rock strength, depending on the frictional properties for the linear criterion, and on the geological strength index (GSI) for the non-linear criterion. Confinement may also influence both criteria, but the estimated strength of the non-linear criterion is still low for weak rock when the GSI is low. Accordingly, the implication of these variations and uncertainties in rock properties is that the linear criterion may be practically suitable for tunnelling at shallow depths where instability is mostly due to gravity loads. The criterion tends to provide moderate, conservative rock mass strength estimations for this type of tunnel, since shear mechanisms may dominate rock mass failures around it.

show abstract

The Hoek–Brown Failure Criterion

Cited by 221 publications

References 23 publications

Prediction of Mud Pressures for the Stability of Wellbores Drilled in Transversely Isotropic Rocks

Prediction of Mud Pressures for the Stability of Wellbores Drilled in Transversely Isotropic Rocks

The 2012 M_w 8.6 Wharton Basin sequence: A cascade of great earthquakes generated by near‐orthogonal, young, oceanic mantle faults

Practical Applications of Strength Criteria in Civil Engineering Designs for Shallow Tunnels in Weak Rock

Contact Info

Product

Resources

About

The Hoek–Brown Failure Criterion

Cited by 221 publications

References 23 publications

Prediction of Mud Pressures for the Stability of Wellbores Drilled in Transversely Isotropic Rocks

Prediction of Mud Pressures for the Stability of Wellbores Drilled in Transversely Isotropic Rocks

The 2012 Mw 8.6 Wharton Basin sequence: A cascade of great earthquakes generated by near‐orthogonal, young, oceanic mantle faults

Practical Applications of Strength Criteria in Civil Engineering Designs for Shallow Tunnels in Weak Rock

Contact Info

Product

Resources

About

The 2012 M_w 8.6 Wharton Basin sequence: A cascade of great earthquakes generated by near‐orthogonal, young, oceanic mantle faults