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- W2356278520 abstract "Based on the No. 5216 fully-mechanized working face of No. 10 coal seam in Tuanbai mine, the coal seam floor failure depth of No. 10 as the exploitation process under pressure was researched. Through the water pressure test of different depth rock under coal seam floor before and after mining,it acquired a lot of pressure water measured data,at the same time,the F-RFPA2Danalysis system was used to simulate the damage rule and its depth of water-resisting strata in coal seam floor,Finally,the field measured data and the results of numerical calculation were compared. The results show that the direct floor damage depth which was caused by the mining of coal seam was 9. 5 m,the maximum damage depth was 12 m or so; Using F-RFPA2Dsimulation analysis,the first weighting interval of main roof was 40 m,and the periodic weighting interval was 12 ~ 16 m,when the working face advance to 84 m,the floor damage depth reached the maximum of 12 m,this result was consistent with field test results,the reliability and effectiveness of the measured data were also verified. Based on the analysis of the results, the maximum damage depth of No. 10 coal seam floor as the exploitation process was 12 m,this conclusion could be used to provide reference basis and scientific guidance for water disasters prevention of the exploitation process under pressure mining in Tuanbai coal mine" @default.
- W2356278520 created "2016-06-24" @default.
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- W2356278520 date "2014-01-01" @default.
- W2356278520 modified "2023-09-23" @default.
- W2356278520 title "Field measurement and numerical simulation on the depth of floor damage in lower coal mining with water pressure" @default.
- W2356278520 hasPublicationYear "2014" @default.
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