Safety evaluation of salt cavern gas storage close to an old cavern

Wang, Tongtao; Yang, Chunhe; Ma, Hongling; Li, Yinping; Shi, Xilin; Jian-jun, LI; Daemen, J.J.K.

doi:10.1016/j.ijrmms.2016.01.005

Cited by 80 publications

(21 citation statements)

References 15 publications

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“…Also, a rock mechanical calculations performed by Jafari et al (2011) to study the effects of the seasonal and micro-cycling operation modes on different failure criteria, namely, no-dilation, no-tension, no-damage and limited volume convergence. For more examples, see Bérest et al (2008);Bérest (2011);Lux (2013), andWang et al (2016).…”

Section: Stability Of the Cavitymentioning

confidence: 99%

Probabilistic Analysis of a Rock Salt Cavern with Application to Energy Storage Systems

et al. 2016

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Section: Stability Of the Cavitymentioning

confidence: 99%

Probabilistic Analysis of a Rock Salt Cavern with Application to Energy Storage Systems

et al. 2016

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“…Kumar et al [7] dened the safety factor as the ratio of the strength estimated by the Hoek-Brown criterion and the stress induced on a pillar to evaluate the safety of the pillar. Wang et al [8] utilized a dilatancy safety factor based on the Van Sambeek criterion to evaluate the safety of salt caverns.…”

Section: Introductionmentioning

confidence: 99%

An Index for Estimating the Stability of the Layered Rock Masses under Excavation Disturbance

Wan

et al. 2018

Advances in Materials Science and Engineering

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The mechanical behaviours of layered rock mass exhibit significant differences in the directions parallel and vertical to the bedding planes. The deformation and failure of a layered rock mass has remarkable weak-plane dependence, which brings a major challenge to the control of the stability of the surrounding rock mass in underground openings. In this study, a layered rock mass is firstly regarded as a composite material composed of interlayered rocks and bedding planes. Then, based on the Mohr–Coulomb and maximum tensile stress criteria, an index of point safety factor for a layered rock mass is established considering the mechanical properties of interlayered rocks and bedding planes. The safety of the artificial layered rock mass specimens in the triaxial test is evaluated using this index. The results show that the distribution of this index is in good agreement with the macroscopic failed zone of the rock specimen, indicating that this index is feasible for characterizing the macroscopic failure of rock masses. Finally, the index is adopted to evaluate the stability of the midpartition between the #3 and #4 diversion tunnels at the right bank of the Wudongde hydropower station before and after its reinforcement. The results indicate that there is a yielded zone where the point safety factor is less than 1.0 in the unreinforced midpartition of the collapsed tunnel section, and it is nearly connected. If it is not reinforced in time, collapse cut-through of the entire midpartition may occur and then endanger the overall stability of the tunnel. After the emergency reinforcement measure with two-ended anchored piles and concrete backfill, the safety of the midpartition is significantly improved. In this case, the safety factor is much larger than 1.0, indicating that the adoption of this emergency reinforcement measure is effective.

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“…2. Stress-based dilatancy criteria are widely used in feasibility studies, for cavern design (Sobolik and Ehgartner 2011;Moghadam et al 2013Moghadam et al , 2015Khaledi et al 2016;Ghasemloonia and Butt 2015;Wang et al 2016;Yang et al 2016) as well as for backcalculation of the behavior of underground works (Bauer et al 1997;Bérest et al 2008b).…”

Section: Introductionmentioning

confidence: 99%

Dilatancy Criteria for Salt Cavern Design: A Comparison Between Stress- and Strain-Based Approaches

Labaune,

Rouabhi,

Tijani

et al. 2017

Rock Mech Rock Eng

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International audienceThis paper presents a new approach for salt cavern design, based on the use of the onset of dilatancy as a design threshold. In the proposed approach, a rheological model that includes dilatancy at the constitutive level is developed, and a strain-based dilatancy criterion is defined. As compared to classical design methods that consist in simulating cavern behavior through creep laws (fitted on long-term tests) and then using a criterion (derived from short-terms tests or experience) to determine the stability of the excavation, the proposed approach is consistent both with short- and long-term conditions. The new strain-based dilatancy criterion is compared to a stress-based dilatancy criterion through numericalsimulations of salt caverns under cyclic loading conditions. The dilatancy zones predicted by the strain-based criterion are larger than the ones predicted by the stress-based criteria, which is conservative yet constructive for design purposes

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Safety evaluation of salt cavern gas storage close to an old cavern

Cited by 80 publications

References 15 publications

Probabilistic Analysis of a Rock Salt Cavern with Application to Energy Storage Systems

Probabilistic Analysis of a Rock Salt Cavern with Application to Energy Storage Systems

An Index for Estimating the Stability of the Layered Rock Masses under Excavation Disturbance

Dilatancy Criteria for Salt Cavern Design: A Comparison Between Stress- and Strain-Based Approaches

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