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《China Mining Magazine》 2008-04
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Resaerch on physics and mechanics performance of paste-like backfill material in coal mine

SUN Wen-biao1,LIU Ma-qun 1,ZHANG Jing-fei2,ZHANG Jian-li 3(1.Department of Safety Engineering,Henan Institute of Technology,Zhengzhou 451191,China;2.Department of Engineering Mechanics,Zhengzhou University,Zhengzhou 450001,China;3.Peigou Coal Mine,Zhengzhou Coal Mining Group,Xinmi 452382,China)  
Physics and mechanics performance of paste-like backfill material in coal mine such as strength,allowable specific pressure and compressive rate was researched by experiment.The results show that after curing for 12 hours the backfill material can achieve sufficient strength to keep stable with the content 3% of sialite and the slurry density above 78%;After curing for 28 days the backfill material can achieve sufficient allowable specific pressure to avoid insertion of prop into floor with the content 3% of sialite and the slurry density 80%;Paste-like backfill material has far smaller compressive rate than sand,fly ash gangue powed and so on.
【CateGory Index】: TD823.7
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