Research on Prediction Model of Ground Temperature Changes and Fluid Solid Thermal Coupling During Fault Water Inrush Process
The mine water inrush disaster is a major hidden danger and technical difficulties that threatens the safety production of coal mines in China.In order to more accurately predict and forecast mine water inrush disasters,by coupling the flow equation of porous media,the heat transfer equation of porous media,and the solid mechanics equation,a temperature field-seepage flow field-stress field(THM)multi field coupling numerical simulation model is established using the multi physic field coupling numerical simulation software COMSOL Multiphysics.The model simulates the roof water hazard caused by the fault conducting aquifer and working face,and studies the seepage velocity distribution and its variation law of groundwater under different aquifer water pressures under the action of multi field coupling,as well as the temperature field distribution and its variation law of underground rock mass under the action of seepage flow field.The research shows that the higher the water pressure in the upper aquifer of the coal seam,the greater the cooling action on the coal and rock mass near the working face.This can be used to reflect changes in the seepage flow field and predict the magnitude of water inrush danger,which has guiding significance for the prevention of mine water inrush disasters.
multi field couplingtemperatureseepage flowstressfault water inrush
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