Modelování proudění plynů v horninovém prostředí.

Abstract

This dissertation thesis deals with the escape of dangerous mine gas, methane, from underground to the surface using numerical modeling of flow using the CFD program Fluent. Leaks of mine gases depend on many natural and mining-technical conditions. Situation is significantly worse with the closing of mines and thus the end of ventilation. One of the problems with which we can meet in the areas of end-mining activities in coal underground mines is the leakage of methane from remaining parts of coal seams. For the protection of the population has so far taken a number of measures to gradually reduce risk. Yet the current situation is generally rated as serious as these risks continue to exist. Exclusivity of this approach is to visualize and show how gas will behave in porous media model tested in these examples. Without the use of numerical simulation of flow, commonly known as CFD programs, practically we can never see and know the situation in the ground and thanks to the use of Fluent, we can theoretically modeled and then realize how environmental influences can alter and influence the flow from underground to the surface and immediate change conditions. Dissertation therefore responds to the need for understanding natural processes in this field, and therefore deals with the simulation and modeling of the flow of methane from underground to the surface through rocks. To create a geometric model of the working area was used Gambit software tool and for modeling the flow of gas was used CFD software, Fluent, ANSYS, Inc..