THE CONTROL OF HUGE WATER GUSHING HAZARD IN MIDDLE ORDOVICIAN LIMESTONE IN XIN’AH COAL MINE
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Graphical Abstract
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Abstract
On 5 Nov. 1995,a huge water gushing hazard with the flow of 4257 m3/h occurred in Xin'an coal mine and themine was flooded. After investigating, the passage is F3 normal fault, the source is from middle Ordovician limestone water.The passage was plugged by grouting method. remnant flow is only 29.55 m3/h. The control result is satisfactry.
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