A model for cable bolt-rock mass interaction: Integration with discontinuous deformation analysis (DDA) algorithm

Moosavi, M.; Grayeli, Roozbeh

doi:10.1016/j.ijrmms.2005.11.002

Cited by 42 publications

(12 citation statements)

References 14 publications

(24 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A new analytical model that represents the behavior of reinforced ground near a circular underground opening in a homogeneous, uniform stress field has been developed by considering the interaction behaviors between the grouted rockbolt and ground [11]. Moosavi and Grayeli [12] simulated rockbolt support problems by using the DDA method and mainly focused on the basic performance of the support system. Freeman [13] first proposed the concept of "neutral point" by analyzing the full-length bonded anchor in the test tunnel, which is widely recognized and applied, but the position of "neutral point" is difficult to determine.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research on Mechanical and Energy Characteristics of Reinforced Rock under Dynamic Loading

Xin-xi

Liu

Zhao

et al. 2019

Shock and Vibration

View full text Add to dashboard Cite

The properties of anchored surrounding rock may vary considerably under complex geological and stress conditions, especially dynamic loading in deep mining. Therefore, comprehensive study of the reinforced mechanism is required to prevent failures associated with deep mining. In this paper, with sandstone as matrix and steel bar as bolt, the dynamic compression test of reinforced rock was carried out by using a 50 mm rod diameter split Hopkinson pressure bar (SHPB) test device. The mechanical and energy characteristics of reinforced rock under dynamic loading were analyzed. The results show that the dynamic strength of reinforced sample is greater than that of unreinforced sample and increases with the increase of the strain rate. The reflected energy and absorbed energy increase with the increase of incident energy, while the transmitted energy increases slightly. The higher the strain rate, the larger the energy dissipation rate and the higher the degree of fragmentation. It shows that the energy dissipation characteristic reflects the internal damage process to some extent. Compared with the results of unreinforced samples, the reflected energy of reinforced samples significantly increases and the absorbed energy will significantly decrease. It can be seen that the bolt can reduce absorbed energy of surrounding rock, thereby improving the stability of roadway surrounding rock. The results may provide reference for the stability of deep roadway and support design.

show abstract

Section: Introductionmentioning

confidence: 99%

Experimental Research on Mechanical and Energy Characteristics of Reinforced Rock under Dynamic Loading

Xin-xi

Liu

Zhao

et al. 2019

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…The existing algorithm assumes that the restraint afforded by a rock bolt is predominantly resisted by its axial forces, whereas its shear resistance is ignored. To overcome the limitation of the assumption, scholars (Moosavi and Grayeli, 2006;Li et al, 2013;Nie et al, 2014) have presented several algorithms of the rock bolt in the DDA method, such as the fully grouted cable bolt and the D-bolt. In fact, ignoring the shear component is a conservative assumption because larger displacements of the blocks are thereby obtained (Boon et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigations of the sequential excavation and reinforcement of an underground cavern complex using the discontinuous deformation analysis method

Sheng

Zhang

et al. 2015

Tunnelling and Underground Space Technology

View full text Add to dashboard Cite

“…Shi and Goodman (1985) and Pérez-Aparicio and Bravo (2006)). The DEM is particularly attractive for problems with internal discontinuous geometry, and its applicability goes from large scale rigid body problems (for example, mechanical response of rock assemblies, Shi (1988), Moosavi and Grayeli (2006)), to small scale problems (for example, granular discharge from bucket elevators, Pérez-Aparicio and Bravo (2006)). The method considers the global behavior of the particles through the single contribution of each member and the interaction of particles by friction and contact, resulting in a simple momentum balance formulation and in a simple incorporation of contact restrictions.…”

Section: Introductionmentioning

confidence: 99%

Incipient sediment transport for non-cohesive landforms by the discrete element method (DEM)

Bravo

Ortiz

Pérez-Aparicio

2014

Applied Mathematical Modelling

View full text Add to dashboard Cite

We introduce a numerical method for incipient sediment transport past bedforms. The approach is based on the discrete element method (DEM) (Pérez-Aparicio and Bravo (2006)), simulating the micro-mechanics of the landform as an aggregate of rigid spheres interacting by contact and friction. A continuous finite element approximation ) predicts the boundary shear stress field due to the fluid flow, resulting in drag and lift forces acting over the particles. Numerical experiments verify the method by reproducing results by Shields (1936) and other authors for the initiation of motion of a single grain. A series of experiments for sediments with varying compacity and constituting piles yields enhanced relationships between threshold shear stress and friction Reynolds number, to define incipient sediment transport criterion for flows over small-scale bed morphologies.

show abstract

A model for cable bolt-rock mass interaction: Integration with discontinuous deformation analysis (DDA) algorithm

Cited by 42 publications

References 14 publications

Experimental Research on Mechanical and Energy Characteristics of Reinforced Rock under Dynamic Loading

Experimental Research on Mechanical and Energy Characteristics of Reinforced Rock under Dynamic Loading

Investigations of the sequential excavation and reinforcement of an underground cavern complex using the discontinuous deformation analysis method

Incipient sediment transport for non-cohesive landforms by the discrete element method (DEM)

Contact Info

Product

Resources

About