Mining high and support have influence on stress and displacement distribute of top coal, which offer the basic law of mechanical for top coal broken analysis and movement.
分析了采高和支架对顶煤应力和位移分布的影响，为顶煤破碎机理的分析和顶煤移动和运动规律的研究提供了依据。
High water absorption; Small apparent density, good mechanical properties, high stability, suitable for catalyst support.
吸水率高，堆积密度小，机械性能好，具有良好的稳定性，适合做催化剂载体。
High water absorption; Small apparent density, good mechanical properties, high stability, suitable for catalyst support.
吸水率高，堆积密度小，机械性能好，具有良好的稳定性，适合做催化剂载体。
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