Numerical Study on the Triaxial Stress Condition for Ring-like Fractures around Deep Underground Openings

2018 ◽  
Vol 48 (2) ◽  
pp. 20170202
Author(s):  
Peng Jia
Keyword(s):  
Stress Condition ◽  
Numerical Study ◽  
Triaxial Stress ◽  
Underground Openings ◽  
Deep Underground

scholarly journals Numerical Modeling on the Fracturing and Energy Evolution of Large Deep Underground Openings Subjected to Dynamic Disturbance

Energies ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 6102
Author(s):  
Chun Yang ◽  
Keping Zhou ◽  
Zhichao Li ◽  
Xin Xiong ◽  
Yun Lin ◽  
...  
Keyword(s):  
High Stress ◽  
Microseismic Monitoring ◽  
Dynamic Loads ◽  
Energy Evolution ◽  
Resource Exploitation ◽  
External Interference ◽  
Ground Pressure ◽  
Underground Openings ◽  
Deep Underground ◽  
Static And Dynamic Loads

The exploitation of deep resources is necessary for human development. At the same time, high-stress environments that are deep underground bring about great challenges vis-à-vis resource exploitation. A large deep opening is sensitive to high ground stress, and is easily influenced by external interference, which can lead to geologically hazardous occurrences. To investigate the evolution of fracturing and energy in large, deep stopes subjected to dynamic loads, we established a numerical model of a stope in the Gaofeng mine. Using ANSYS/LS-DYNA software, we implemented an implicit solution to initial static stress and an explicit solution for dynamic analysis. Based on our numerical results, we obtained the fracture behavior and energy evolution under coupled static and dynamic loads. To determine the response of ground pressure to mining activity, a 24-channel microseismic monitoring system was designed for the Gaofeng mine based on the numerical analysis.

scholarly journals Behavior of PVC and HDPE under highly triaxial stress states: An experimental and numerical study

2014 ◽  
Vol 72 ◽  
pp. 94-108 ◽  
Author(s):  
Anne Serine Ognedal ◽  
Arild H. Clausen ◽  
Anfrid Dahlen ◽  
Odd Sture Hopperstad
Keyword(s):  
Numerical Study ◽  
Triaxial Stress ◽  
Stress States

Failure of a linear Voussoir arch: a laboratory and numerical study

1992 ◽  
Vol 29 (2) ◽  
pp. 188-194 ◽  
Author(s):  
B. Stimpson ◽  
M. Ahmed
Keyword(s):  
Numerical Study ◽  
Progressive Failure ◽  
Load Capacity ◽  
Failure Process ◽  
Physical Models ◽  
Ultimate Load Capacity ◽  
Element Analysis ◽  
Underground Openings ◽  
Physical Model Tests ◽  
Discrete Crack

The design of underground openings in horizontally layered strata on the basis of classical linear arching theory assumes the ultimate load capacity of the roof is limited by crushing or compressional failure at the centre of the arch or at the abutments. In this study, physical model tests on limestone, granite, and potash beams revealed a progressive failure mechanism dominated by discrete tensile fracturing, a quite different failure process to that assumed by classical theory. Subsequently, discrete crack propagation finite element analysis successfully simulated the failure mechanisms observed in the physical models. Key words : rock mechanics, underground design, roof stability, Voussoir arch, fracture.

Sign in / Sign up

Export Citation Format

Share Document