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- W2350225062 abstract "Based on the geological condition and the mining technology condition of No. 1 Mining Block in Huainan Mining Area as a background,a FLAC3D3D computation model was established and applied to deep and systematically study the stress distribution law closed to the seam under the mining condition in No. B9b and No. B10 protective seams individually. The study achievements showed that 1) under the mining condition of the protective seam,the vertical stress of the coal mining face in the protected seam could be divided into a pressure released zone,a pressure increased zone and a pressure stabilized zone. 2) As under the individual mining condition of the No. B9b and No. B10 seams as the underneath protective seam,the deep depth pressure released effect would be lower than the shallow depth. As under the individual mining condition of No. B9b and B10 seams as the upper protective seams,the deep depth pressure released effect would be better than shallow depth. As under the individual mining of No. B9b and No. B10 seams as the underneath protective seams,a spacing of the two seams would not have obvious influences to the pressure released effect of the vertical stress in the above seam,but would have obvious influences to the pressure increased zone. 4) As under the individual mining of No. B9b and No. B10 seams as the upper protective seams,a spacing of the two seams would have obvious influences to the pressure released range of the vertical stress in the underlying seam and the pressure increased zone and a small spacing would increase the pressure released effect,but the stress concentration coefficient of the pressure increased zone would be increased." @default.
- W2350225062 created "2016-06-24" @default.
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- W2350225062 date "2014-01-01" @default.
- W2350225062 modified "2023-09-27" @default.
- W2350225062 title "Study on Numerical Simulation of Pressure Released Law in Mining of Protective Seam in No. 51 Mining Block of Xieyi Mine" @default.
- W2350225062 hasPublicationYear "2014" @default.
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