Brittle-ductile transition and failure mechanism of Jinping marble under true triaxial compression

Zhao, Jun; Feng, Xia‐Ting; Zhang, Xi-Wei; Zhang, Yan; Zhou, Yuanzhong; Yang, Chengxiang

doi:10.1016/j.enggeo.2017.11.008

Cited by 105 publications

(18 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Jinping marble is a typical brittle rock, and its mechanical properties have been reported in many studies [31,[37][38][39][40][41][42][43]. In this study, the Jinping marble is used for parameter calibration, and a set of mechanical properties of Jinping marble, including uniaxial compressive strength (UCS), elastic modulus, Poisson's ratio, and tensile strength (TS), are matched with the simulated values [31,43].…”

Section: Calibration Of Micro-parametersmentioning

confidence: 99%

Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling

Zhang

et al. 2021

Sustainability

View full text Add to dashboard Cite

Taking the “11.28” rockburst occurred in the Jinping II Hydropower Station as the engineering background, the evolution mechanism of structure-type rockburst was studied in detail based on the particle flow code. The results indicate that the failure mechanism of structure-type rockburst includes a tensile fracture induced by tangential compressive stress and a shear fracture caused by shear stress due to overburdened loadings and shear slip on the structural plane. In addition, it is found that the differences between structure-type rockburst and strainburst mainly include (a) the distribution of the local concentrated stress zone after excavation, (b) the evolution mechanism, and (c) the failure locations. Finally, the influence of four factors on the structure-type rockburst are explored. The results show that (1) when the friction coefficient is greater than 0.5, the effect of structural plane is weakened, and the rock near excavation tends to be intact, the structural-type rockburst intensity decreases; (2) the dissipated and radiated energy in structural-type rockburst reduces with rockmass heterogeneity m; (3) the lateral pressure coefficient has a significant effect on the intensity of deep rock failure, specifically in the form of the rapid growth in dissipative energy; (4) and the structural-type rockburst is more pronounced at a structural plane length near 90 mm.

show abstract

Section: Calibration Of Micro-parametersmentioning

confidence: 99%

Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling

Zhang

et al. 2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…Moreover, the postpeak curves present two different failure characteristics (Figure 3). One shows an apparent brittle failure characteristic (such as granite, diorite, quartzite, limestone, gneiss, dolomite, shale, metamorphic sandstone, and quartz schist), and the other shows an obvious ductile failure characteristic (such as mudstone, physicochemical slate, schist, porphyrite, sandstone, and marble) [29,30].…”

Section: Stress-strain Curvesmentioning

confidence: 99%

Energy Dissipation-Based Method for Strength Determination of Rock under Uniaxial Compression

Pang

Wang

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

The energy conversion in rocks has an important significance for evaluation of the stability and safety of rock engineering. In this paper, some uniaxial compression tests for fifteen different rocks were performed. The evolution characteristics of the total energy, elastic energy, and dissipated energy for the fifteen rocks were studied. The dissipation energy coefficient was introduced to study the evolution characteristics of rock. The evolution of the dissipation energy coefficient for different rocks was investigated. The linear interrelations of the dissipation energy coefficients and the yield strength and peak strength were explored. The method was proposed to determine the strength of rock using the dissipation energy coefficients. The results show that the evolution of the dissipation energy coefficient exhibits significant deformation properties of rock. The dissipation energy coefficients linearly increase with the compaction strength, but decrease with the yield strength and peak strength. Moreover, the dissipation energy coefficient can be used to determine the rock burst proneness and crack propagation in rocks.

show abstract

“…On the basis of fracture development, the pre-peak failure of sealed brittle materials can be divided into four stages (Wang and Li 2007;Martin and Chandler 1994;Zhao et al 2018;Ren and Ge 2004;Li et al 2017), as shown in Fig. 2: fracture closure (stage I), linear region (stage II), stable extension of micro-cracks (stage III), and accelerating extension of cracks (stage IV).…”

Section: Stress-strain Relationshipmentioning

confidence: 99%

Effect of Pressurized Oil on the Mechanical Properties of Reactive Powder Concrete

Wang

2020

ACT

View full text Add to dashboard Cite

Brittle-ductile transition and failure mechanism of Jinping marble under true triaxial compression

Cited by 105 publications

References 17 publications

Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling

Study on Evolution Mechanism of Structure-Type Rockburst: Insights from Discrete Element Modeling

Energy Dissipation-Based Method for Strength Determination of Rock under Uniaxial Compression

Effect of Pressurized Oil on the Mechanical Properties of Reactive Powder Concrete

Contact Info

Product

Resources

About