发明名称 Method for displacing oxygen from a mine
摘要 A method for preventing the formation of acidic mine water wherein inert gas in introduced into a mine cavity under positive pressure to displace oxygen contained therein. Upon detection of the displacement of substantially all of the oxygen from within the mine cavity, the mine cavity is permitted to flood and seal with water.
申请公布号 US4842444(A) 申请公布日期 1989.06.27
申请号 US19870106460 申请日期 1987.10.09
申请人 TUSCO, INCORPORATED 发明人 COWAN, PHILIP B.
分类号 E21F15/00;E21F17/00 主分类号 E21F15/00
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