Quantitative Acoustic Emissions Source Mechanisms Analysis of Soft and Competent Rocks through Micromechanics-Seismicity Coupled Modeling

Raziperchikolaee, Samin; Alvarado, Vladimir; Yin, Shunde

doi:10.1061/(asce)gm.1943-5622.0001933

Cited by 13 publications

(5 citation statements)

References 74 publications

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“…The shear strength parameters of the immediate roof and roadway side are c 2 , ϕ 2 and c 3 , ϕ 3 . It follows that the logarithmic spiral CD expression r 2 (θ) and the BC expression r 3 (θ) are [38,39]:…”

Section: Construction Of the Surrounding Rock Failure Mode Of The Roa...mentioning

confidence: 99%

Study of the Failure Mechanism of Soft Rock Mining Roadways Based on Limit Analysis Theory

Zhang,

Gao,

Yang

et al. 2023

Applied Sciences

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To study the deformation and failure mechanisms of soft rock mining roadways, the 1506 return airway of Anyang Coal Mine is taken as the engineering background. Based on limit analysis theory, a failure model based on a rigid slider system is constructed to assess the failure of the soft rock surrounding a roadway. The formulas for calculating the self-weight power of the slider in the velocity discontinuity line of the rock surrounding the roadway, the work power of the surrounding rock pressure, and the energy dissipation rate of the velocity discontinuity line are derived, and the upper limit objective function of the velocity discontinuity line height is obtained. The failure characteristics and fracture evolution process of the surrounding rock under different mining stresses are analyzed by means of physical similarity simulations. The simulation results show that shear failure occurs first on the roadway side due to stress concentration. The fissures expand along the bottom angle of the roadway to the blind support area and the low-intensity support area. The cracks weaken the support strength of the angled anchor cable and bolt in the roadway shoulder. Under the action of roof pressure, the status of the rock mass inside and outside the shear slip zone changes from static to dynamic. This causes deformation and failure of the roadway roof, side, and floor.

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Section: Construction Of the Surrounding Rock Failure Mode Of The Roa...mentioning

confidence: 99%

Study of the Failure Mechanism of Soft Rock Mining Roadways Based on Limit Analysis Theory

Zhang,

Gao,

Yang

et al. 2023

Applied Sciences

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“…Zhang et al [37] analyzed the failure process of brittle rock based on the moment tensor. Samin et al [38] studied seismic source mechanisms of AE events generated during the failure of intact and jointed rock samples using a microscale mechanical-seismicity coupled microscale model.…”

Section: Introductionmentioning

confidence: 99%

Study on failure mechanism of tight sandstone based on moment tensor inversion

Dang

Yang

Zhu

2023

Heliyon

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“…CT technology can be used to analyze the microscopic damage state at various phases of the rock mass damage process [8]; however, it is extremely difficult to detect the instantaneous dynamics of damage during the entire rock mass damage process using CT technology [9,10]. While the acoustic emission technique can be used to evaluate instantaneous changes in interior damage and analyze the rock body's development mechanism during the damage process [11,12], the dynamic expansion law of surface cracks can be measured using the DIC approach [13,14]. As a result, the combination of acoustic emission and DIC technology can simultaneously measure and investigate the internal and surface damage of red-bed soft rock.…”

Section: Introductionmentioning

confidence: 99%

A Coupled Tensor–DEM–FEM Model for the Whole Process of Internal Fine-Scale Damage to Surface Damage in Red-Bed Soft Rocks in the Coastal Area of South China

Xia

Cui

et al. 2023

JMSE

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Calculation and characterization of the whole process of internal microscopic damage to surface damage in red-bed soft rock is a theoretical research difficulty and an urgent need for engineering safety protection. However, the current study cannot accurately and directly correlate internal and external damage. Therefore, in this paper, a coupled tensor–DEM–FEM model is proposed to deal with surface damage by indoor triaxial test digital image processing (DIC), internal damage by FJM acoustic emission study, and internal and external damage by moment tensor correlation. The study demonstrates that the whole process damage process of the red-bed soft rock peak front can be divided into six distinct phases, with early damage beginning with the elastic phase; the local strain divergence value begins to spiral out of control during the period of crack acceleration development; the overall acoustic emission intensity distribution is in the range of [−8.5, −6.3] in two dimensions and in the range of [−11, −9] in three dimensions; the R were between −40 and 40, which corresponded to the results of the indoor tests. A model has been developed that allows a direct reflection of the whole damage process. The method can be used to better understand the disaster mechanism and guide engineering practice.

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Quantitative Acoustic Emissions Source Mechanisms Analysis of Soft and Competent Rocks through Micromechanics-Seismicity Coupled Modeling

Cited by 13 publications

References 74 publications

Study of the Failure Mechanism of Soft Rock Mining Roadways Based on Limit Analysis Theory

Study of the Failure Mechanism of Soft Rock Mining Roadways Based on Limit Analysis Theory

Study on failure mechanism of tight sandstone based on moment tensor inversion

A Coupled Tensor–DEM–FEM Model for the Whole Process of Internal Fine-Scale Damage to Surface Damage in Red-Bed Soft Rocks in the Coastal Area of South China

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