When the fault throw is relatively small, the shale gouge ratio and clay smear potential are relatively large and shale smear is strong. In addition, the coal layers on both sides of the fault are mainly juxtaposed against shale. Therefore, shale smear and juxtaposition play a key role in the sealing. In contrast, when the fault throw is relatively large and shale smear is relatively weak, juxtaposition is unfavorable for sealing. However, the mylonite resulted from strong cataclasis can act as a seal of the coals. The cementation resulted from underground water activity is of great significance to the sealing ability of the fault. Mylonitic coal layers resulted from faulting occur on both sides of the fault. They are unique reservoirs with low permeability and high displacement pressure and their scales depend, to some extent, on the fault throw, fault properties, the hanging wall and footwall.

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Coal Industry: The province plans to quicken the construction of the stream coal base in the northern part, the coke base in the central part, and the anthracite coal base in the eastern part in accordance with the country's overall arrangement, transform from a large coal province into a strong coal province by following the strategy of "collectivizing, cleaning, diversification", and control the total coal output within around 700 million tons.

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Strong soda lye was added into high calcium pulverized coal ash to prepare improved pulverized coal ash, the result from measurement shows that the bulk density, specific surface area, granulation appearance of pulverized coal ash after improvement were substantially better than that of coal ash before improvement.

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strong collinearity：強共線性

strong coal 強煤 | strong collinearity 強共線性 | strong complete 強完全性的

steering crutch：櫓架(救生艇)

烈風(fēng)(九級風(fēng)) strong gale | 櫓架(救生艇) steering crutch | 汽煤(鍋爐用) steam coal