近浅埋厚煤层综放开采覆岩运移规律相似模拟研究
Analogue Simulation for Overlying Strata Movement Rule in Full-mechanized Caving Mining Shallow Buried Thick Coal-seam
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摘要: 为了研究我国西部某矿区2-2煤层近浅埋厚煤层综放开采时覆岩运移规律,以某综放工作面为实际工程背景,根据相似理论,运用相似材料模拟实验,从不同角度对工作面开采后覆岩运移规律进行了分析。通过研究,得出了近浅埋煤层开采时基本顶的初次垮落及周期垮落步距、覆岩垮落形态、覆岩垮落"三带"特征和岩层位移特征,为具有相同地质条件煤层的安全开采提供依据,同时对其他具有相似地质条件煤层开采覆岩运移规律研究提供参考。Abstract: In order to obtain overlying strata movement rule of full-mechanized caving mining shallow buried thick coal-seam in a mine,western area of China,analogue simulation was made to analyzing it from different conditions.Results obtained first cave and periodical cave pace of basic roof,cave form of overlying strata,"three-zone" characteristics and strata displacement characteristic,which provided reference for safe mining of coal-seam with similar geological condition.