Author(s): GUO Fanjin
Pages: 52-54
Year: 2012 Issue:  5
Journal: Coal Science and Technology
Keyword:  coal combustion; drilling and grouting; grouting technique; insulated fire zone; sealing wall of fire extinguishing;
Abstract: 由于大柳塔煤矿大柳塔井邻近的小煤矿五当沟井口附近采空区遗煤的自燃,危及大柳塔井安全开采,而五当沟井口巷道垮塌严重且已封闭,大柳塔井与五当沟井采空区联通巷道也垮塌,两侧均不能通过井下采取灭火措施,因此采用地面打钻,干法灌注粗、细骨料,渗入式注浆与静压注浆相结合的方法构筑密闭墙,封堵井下巷道隔绝采空区火区,取得了良好效果。