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以平山矿3#煤层400 m处煤层深度为研究对象,以煤与瓦斯突出机理和煤体孔径、渗透率与煤体吸附规律对突出的影响为基础,采用煤与瓦斯突出模拟实验装置,在不同瓦斯压力条件下,进行煤与瓦斯突出相似模拟实验。实验验证了煤与瓦斯在矿井下发生突出动力灾害现象的临界瓦斯压力为0.5~0.75 MPa,同时说明瓦斯气体对煤样在突出时有破坏和粉碎作用。
Taking the coal seam depth of 400 m in No. 3 seam of Pingshan Mine as the research object, based on the influence mechanism of coal and gas outburst and the influence of coal pore size, permeability and coal adsorption law, coal and gas outburst simulation experiment device was adopted. Under the condition of different gas pressure, similar simulation experiments of coal and gas outburst are carried out. Experiments show that the critical gas pressure of coal and gas in coal mines with prominent dynamic disasters is 0.5-0.75 MPa, and meanwhile the destructive and comminuting effects of gas on the coal sample during the project are demonstrated.