煤層瓦斯場理論及抽采應(yīng)用研究
[Abstract]:In this paper, the theory of gas field in coal seam is established. Through the gas potential and gas flow function equation, the law of gas drainage and migration is studied, which provides new theoretical support for the work of gas drainage. On the basis of gas field theory, the optimization function equation of borehole parameters in gas field is established. Considering the superposition effect, the quantity of porous gas emission is analyzed and calculated, and the optimization scheme of drilling parameters is put forward. In combination with the application conditions, the consistency of the equation simulation is verified by using COMSOL, and the result proves the consistency. Based on the gas-water two-phase fluid-solid coupling model, this paper studies and analyzes the migration law of the coal seam in 12503 working face of Tunlan Coal Mine. Through analysis and simulation, combined with the theory of coal seam gas migration, The conformance of optimal extraction function in coal seam gas field is verified. This paper studies and analyzes the condition of gas drainage in Xishan mining area. By applying the optimization function of borehole parameters in gas field, the field application study on optimization of drainage borehole is carried out, which verifies the consistency of the calculation results of borehole optimization.
【學(xué)位授予單位】:中國礦業(yè)大學(xué)(北京)
【學(xué)位級別】:博士
【學(xué)位授予年份】:2014
【分類號】:TD712.6
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