Abstract
Fly ash is a coal-fired waste from the coal-consumed power plant. It has become a great concern as to how fly ash should be treated properly at home. At present, the comprehensive utilization ratio of fly ash is just 30% and utilization ratio of fly ash from coal gangue power plant is less than coal-fired power plant. The effect of different fly ash added to the high-water filling material on the filling result was analyzed and field test of filling in mined-out area was conducted in the Babao vertical shaft + 3211 section of Tonghua coal mining group. The result shows that fly ash of gangue power plant added into the high-water packing material can lower the filling material cost effectively. This research can lead to push forward the utilization of fly ash with high efficiency.
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