UDEC Modelling on Dynamic Response of Rock Masses with Joint Stiffness Weakening Attributed to Particle Crushing of Granular Fillings

Du, Jiahu; Huang, Xiaolin; Yang, Guoxiang; Xue, Lei; Wu, Bangbiao; Zang, Mingdong; Zhang, Xiaohui

doi:10.1007/s00603-022-03181-3

Cited by 3 publications

(1 citation statement)

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“…The application of bonded-block models in rock mechanics has swiftly extended to more complex physical problems and diverse site conditions, including time-dependent damage evolution in sandstone [42]; hydro-mechanical problems [43]; dynamic fracture in the simulation of wave propagation experiments in a modified split Hopkinson pressure bar [44]; and thermo-mechanical problems [45][46][47]. Practical engineering applications have become more widespread in the design of rock bolt support in underground mines [48]; in the study of the stability of deep mining pillars [49]; in the investigation of design issues in underground works [50]; and coal-mining problems [51,52].…”

Section: Bonded-block Modelsmentioning

confidence: 99%

Application of Bonded-Block Models to Rock Failure Analysis

Lemos

2023

Applied Sciences

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Discrete element models are being increasingly applied to model rock failure processes. Bonded-particle models, based on circular or spherical particle systems, have been successfully used for two decades. More recently, bonded-block models, using polygonal or polyhedral elements, have proven to be a powerful alternative. This paper describes the basis of the application of these models in the numerical simulation of failure in rock materials. The critical governing parameters are identified, and their influence is discussed. The model calibration procedure based on the analysis of laboratory tests is discussed. An application example of an underground excavation problem is presented using a simple bonded-block model employing rigid blocks and a bilinear softening contact model. The results show the capability of this approach to reproduce observed failure modes involving block fractures.

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