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根据煤与瓦斯突出的球壳失稳机理,通过测定具有代表性的煤样初始释放瓦斯膨胀能,并根据其突出的临界指标可以得到矿井的不发生突出的安全临界瓦斯压力。根据这一发现,可以在石门揭煤的时候可以向煤层打钻,并向钻孔内以安全临界瓦斯压力这一恒压补充气体,经过一定时间t之后切断气源观察瓦斯压力表的读数变化,即可判断石门前方煤体的瓦斯压力与安全临界瓦斯压力的相对大小,进而可对石门前方煤层的突出危险性进行快速预测。
According to the instability mechanism of the coal shell and gas outburst spherical shell, by measuring the initial released gas expansion energy of the representative coal sample and according to its prominent critical index, the outstanding safety critical gas pressure of the coal mine can be obtained. According to this discovery, it is possible to drill a coal seam at the time of exposing the stone door and to supplement the constant pressure with safety critical gas pressure in the borehole. After a certain period of time t, the gas source is cut off to observe the change of the reading of the gas pressure gauge , You can determine the relative size of the gas pressure in front of Shek Mun coal and the critical pressure of safety, which can then quickly predict the outstanding risk of coal seams in front of Shek Mun.