Numerical simulation on mining-induced water inrushes related to geologic structures using a damage-based hydromechanical model |
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| Authors: | W C Zhu C H Wei |
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| Institution: | (1) Center for Rock Instability and Seismicity Research, Northeastern University, Shenyang, 110004, China |
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| Abstract: | A large number of statistics indicate that water inrush has a direct relationship with geological structures such as fault
and karst collapse columns. Understanding the mechanism of water inrushes controlled by geologic structures is of vital importance
for adopting effective measures to prevent their occurrence. The work begins with formulization of a damage-based hydromechanical
model based on elastic damage theory. Next, the model is numerically implemented with finite element method by employing a
finite element package called COMSOL Multiphysics, and is also validated against some existing experimental observations.
Finally, the model is used to simulate the mining-induced groundwater inrushes when the effect of faults and karst collapse
columns is considered in the numerical simulation, and some suggestive conclusions for preventing water inrushes and optimizing
underground mining operations are drawn. |
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