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- W2361155093 abstract "In order to evaluate mining plans of the two-level mining horizontal pillar,averaging stress of horizontal pillar( ASH),shear stress of horizontal pillar( SSH),and failure ratio of horizontal pillar( FRH) were taken as the evaluation indexes. A numerical orthogonal pilot program was worked out.Effects of factors on the horizontal pillar's stability were studied. The results show the main factors affecting the two-level mining horizontal pillar stability are1250 mid-fall distance,horizontal ground stress,the number of mining entrances and the mining direction of 1250 m level,and that the key to two-level mining horizontal pillar stability is using horizontal ground stress and adjusting the 1250 m level mining technology,the stope structure parameters and the mining sequence,but improving the filling body quality is not very helpful in improving the pillar stability. The study is provided with practical reference to the two-level mining horizontal pillar stability evaluation." @default.
- W2361155093 created "2016-06-24" @default.
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- W2361155093 date "2013-01-01" @default.
- W2361155093 modified "2023-09-26" @default.
- W2361155093 title "Analysis of Factors Influencing Horizontal Pillar Instability and Optimization of Two-level Mining Plans——Taking Jinchuan No. 2 Mine as An Example" @default.
- W2361155093 hasPublicationYear "2013" @default.
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