scholarly journals Numerical Investigation on Zonal Disintegration Mechanism around Deep Underground Openings

2013 ◽  
Vol 5 ◽  
pp. 908028 ◽  
Author(s):  
Yu-Jun Zuo ◽  
Peng Jia ◽  
Wan-Cheng Zhu ◽  
Tao Xu
Keyword(s):  
Numerical Investigation ◽  
Zonal Disintegration ◽  
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 Principles of the non-Euclidian model application to the problem of dissipative mesocracking structures of highly compressed rock and massifs modelling

2018 ◽  
Vol 56 ◽  
pp. 02001
Author(s):  
Mikhail Guzev ◽  
Vladimir Makarov
Keyword(s):  
Mathematical Models ◽  
Rock Mechanics ◽  
Continuum Mechanics ◽  
Rock Massif ◽  
Experimental Results ◽  
Zonal Disintegration ◽  
Model Application ◽  
New Approach ◽  
Rock Samples ◽  
Underground Openings

New experimental results such as “zonal disintegration” around deep openings and “reversible deformations” of highly compressed rock samples cannot be described correctly from contemporary rock mechanics, which is based on the principals of classical Continuum Mechanics theory. A new approach to rock mechanics mathematical models consists of the application of non-Euclidian modelling to the problem of the description of anomalous experimental results. This leads to the formation of the “Geomechanics of Highly Compressed Rock and Rock Massifs” - a new branch of the existing theory of Geomechanics - in which framework a radical rise in geodynamical phenomena forecasting can be achieved. Principles of the geomechanics of highly compressed rock and rock massifs are discussed in this paper. The effectiveness of the application of non-Euclidian modelling to the anomalous experimental effects observed in research is demonstrated on two hierarchical geomedia block levels such as rock samples and rock massif around underground openings.

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