Numerical simulation of crack propagation in a rock mass under seepage-stress coupling conditions

2008 ◽  
pp. 293-298
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Crack Propagation ◽  
Coupling Conditions

scholarly journals Numerical simulation on crack propagation of rock mass with a single crack under seepage water pressure

2017 ◽  
Vol 9 (10) ◽  
pp. 168781401773289 ◽  
Author(s):  
Shiliang Liu ◽  
Wenping Li ◽  
Qiqing Wang ◽  
Zhiyong Wu ◽  
Zhi Yang
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Crack Propagation ◽  
Water Pressure ◽  
Seepage Water ◽  
Single Crack

scholarly journals Stress wave propagation in different number of fissured rock mass based on nonlinear analysis

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Xiaoming Lou ◽  
Mingwu Sun ◽  
Jin Yu
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Confining Pressure ◽  
Displacement Discontinuity ◽  
Stress Wave Propagation ◽  
Theoretical Derivation ◽  
Mechanics Model ◽  
Fissured Rock ◽  
Deep Rock ◽  
Theoretical Accuracy

AbstractThe fissures are ubiquitous in deep rock masses, and they are prone to instability and failure under dynamic loads. In order to study the propagation attenuation of dynamic stress waves in rock mass with different number of fractures under confining pressure, nonlinear theoretical analysis, indoor model test and numerical simulation are used respectively. The theoretical derivation is based on displacement discontinuity method and nonlinear fissure mechanics model named BB model. Using ABAQUS software to establish a numerical model to verify theoretical accuracy, and indoor model tests were carried out too. The research shows that the stress attenuation coefficient decreases with the increase of the number of fissures. The numerical simulation results and experimental results are basically consistent with the theoretical values, which verifies the rationality of the propagation equation.

scholarly journals Timeliness of collinear crack propagation in rock mass

AIP Advances ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 065120
Author(s):  
Min Bao ◽  
Zhonghui Chen ◽  
Zihan Zhou ◽  
Lingfan Zhang ◽  
Jianming Wang
Keyword(s):  
Rock Mass ◽  
Crack Propagation ◽  
Collinear Crack

Application of ABAQUS in Surrounding Rock Stability Analysis of Shallow Large Cross-Section Tunnel

2015 ◽  
Vol 777 ◽  
pp. 8-12 ◽  
Author(s):  
Lin Zhen Cai ◽  
Cheng Liang Zhang
Keyword(s):  
Numerical Simulation ◽  
Rock Mass ◽  
Strong Support ◽  
Surrounding Rock ◽  
Tunnel Engineering ◽  
Tunnel Excavation ◽  
Rock Stability ◽  
Rock Bolting ◽  
Excavation Support ◽  
The Stability

HuJiaDi tunnel construction of Dai Gong highway is troublesome, the surrounding-rock mass give priority to full to strong weathering basalt, surrounding rock integrity is poor, weak self-stability of surrounding rock, and tunnel is prone to collapse. In order to reduce disturbance, taking advantage of the ability of rock mass, excavation adopt the method of "more steps, short footage and strong support". The excavation method using three steps excavation, The excavation footage is about 1.2 ~ 1.5 m; The surrounding rock bolting system still produce a large deformation after completion of the first support construction, it shows that the adopted support intensity cannot guarantee the stability of the tunnel engineering. Using ABAQUS to simulate tunnel excavation support, optimizing the support parameters of the tunnel, conducting comparative analysis with Monitoring and Measuring and numerical simulation results, it shows that the displacement - time curves have a certain consistency in numerical simulation of ABAQUS and Monitoring and Measuring.

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