2023
DOI: 10.30797/madencilik.1077583
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Study on floor instability law of cemented filling mining above a confined aquifer

Jiaqi Wang

Abstract: To solve the problem of floor water inrush in the process of coal mining on a confined aquifer and study the law of floor instability, a cemented filling mining method is proposed in the paper. Using river sand and cement as filling materials, the cementitious material with a concentration of 75% and cement content of 15% has the best flow and mechanical properties. Based on the elastic half-space theory and the bearing characteristics of the backfill, the mechanical model of floor stability is established, th… Show more

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