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

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。

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.