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The effects of different drawing intervaland top-coal fragmental size on flow character of coal-gangue and sand, and on mixed degree of coal and gangue were analyzed during drawing top-coal. 分析了不同放煤步距、頂煤塊度對放煤過程中煤矸砂流動形態、混矸程度的影響。
The influence of coal gangue and the activator on the hydration property of cement is studied in this paper. 研究了煤矸石的種類、摻量以及化學激發劑對水泥水化性能的影響。