煤层瓦斯场理论及抽采应用研究

发布时间：2018-08-31 14:11

【摘要】：本文建立了煤层瓦斯场理论，通过瓦斯势、瓦斯流函数方程，研究瓦斯抽采运移规律，为瓦斯抽采工作提供了新的理论研究支持。在瓦斯场理论基础上，研究建立了瓦斯场钻孔参数优化函数方程。考虑叠加效应，分析计算了多孔瓦斯涌出量，提出抽采钻孔参数优化方案。结合应用条件，用COMSOL进行了方程模拟符合性验证，结果证明了一致性。通过气、水两相流流固耦合模型对屯兰煤矿12503工作面本煤层钻孔抽采运移规律进行研究分析，通过分析与模拟，结合煤层瓦斯运移理论，验证了煤层瓦斯场抽采优化函数符合性。研究分析西山矿区瓦斯抽放工况，应用瓦斯场钻孔参数优化函数，，对抽放钻孔优化进行现场应用研究，验证了钻孔优化计算结果一致性。
[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.
【学位授予单位】：中国矿业大学（北京）
【学位级别】：博士
【学位授予年份】：2014
【分类号】：TD712.6

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