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- W2383514787 abstract "According to the geologic records of 2# mine in Jining, we conclude that imbedding depth of coal seam is deep, and extra heavy magmata rock without beddings and fractures existed in main roof,its displacement rules and instability have potential threat to the security production. So the similar simulation method is used in research on the instability mechanism and displacement rules of overlying magmata strata at the process of deep coal seam exploitation. The results showed that the magmata strata failure was characterized by their periodic configuration. And the first of that is not the whole rock mass failure but the bottom of strata snapped, then be of instability. The model of magmata rock failure showed rotation and periodic configuration with seam exploitation. When the block of magmata rock failure articulated to be beam, it is difficult to be unstable failure." @default.
- W2383514787 created "2016-06-24" @default.
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- W2383514787 date "2008-01-01" @default.
- W2383514787 modified "2023-09-28" @default.
- W2383514787 title "Collapse rupture mechanism of extra heavy magmatic rock" @default.
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