Numerical Simulation Of Mine Water-inrush With Gravity And Parallel Algorithm Design

Underground mine water-irruption is one of the common mine disasters. This problem is concerned and favor by many domestic and foreign scholars. In order to research the water-inrush flow law in different structure of the mine tunnel, this paper uses the lattice Boltzmann method, Numerical simulation of the flood spread process in different structure of the mine tunnel, have a complete understanding of flow from macroscopical to microcosmic. From the macroscopic Angle, this article through calculation of roadway structure drawing different fluid flow chart is normal, this article through calculation drawing different fluid chart of different structure of the mine tunnel, have a macro understanding of water-inrush flood in tunnels. From the micro point, use grid model divide the whole flow field to one unit grid. Calculate density, pressure, velocity vector of each grid. Provide theoretical basis for the prevention and control of water disasters in underground mines. Conducive to scientific prevention disaster and reduce disaster.This article mainly includes three aspects of content:First, use lattice Boltzmann method numerical simulation underground mine water-inrush .Choose corresponding with water fluid D2G9 model , grid next water-irruption is simulated with water corresponding choice D2G9 model, model and its different boundary treatment method, in this proposed based on grid Boltzmann water-inrush numerical simulation model, determine the development process simulation program through computer programs, and ultimately algorithm for simple weighting entry numerical calculation. Second, the selection of complex structure. The roadway structure is' Y 'type and ' + 'type common tunnel structure. In order to make more accurate numerical calculation results, using a complex calculation method, the roadway of partitioned complex flow field of each block independent partitioned, calculated, and block flow field exchange data processing border. Detail the lattice Boltzmann method in each lattice point migration evolution happened. Success achieved in this complex structure of flood spread simulation process of water.Third, the selection of a simple shaft structure, through the lattice Boltzmann evolution equation deduced the transformation, have found a way suitable for external force item evolution equation. In order to save the computing resources, the article presents two grid parallel computing method, through the thick grid parallel computing greatly improve the computational efficiency of Boltzmann grid, solve the grid degree of flow field data exchange rules. In order to verify this method, through the computer program calculation the whole flow field of the state vector diagram, a fluid and proves that the method is a reliable numerical method.