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Besides, the thickened pulverized fuel ash slurry is filled along with mining at the implementation goaf of a side-buried pipe of a return airway, and has the effect of favorable leaking stoppage.
另外，增稠粉煤灰通过在回风巷侧埋管实施采空区随采随灌，增稠粉煤灰具有良好的堵漏效果。
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