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以现有研究成果为基础,通过理论分析、现场实测、计算机数值模拟等手段,运用流体力学、弹塑性力学等理论基础进行运算和推导,对厚煤层综放面的瓦斯抽放方法进行了研究。在分析综放面瓦斯涌出特点和采空区瓦斯运移规律基础上,根据山西晋城永安煤矿实例,建立了煤层顶板上覆岩层移动的数值模型,确定了顶板瓦斯抽放钻孔布置的最佳位置和合理参数,设计出合理的瓦斯抽放方案。
Based on the existing research results, the method of gas drainage from the fully mechanized top coal caving mining face in thick coal seam is studied by means of theoretical analysis, on-the-spot measurement and computer numerical simulation, using the theoretical basis of fluid mechanics and elasto-plastic mechanics . Based on the analysis of gas emission characteristics and gas movement in goaf, a numerical model of coal seam roof overlying strata movement was established according to the example of Yong’an coal mine in Jincheng, Shanxi. The layout of roof gas drainage borehole was determined Good location and reasonable parameters, design a reasonable gas drainage program.