浅埋深厚基岩综放工作面覆岩结构及矿压显现规律研究

工作面覆岩结构及矿压显现规律受煤层赋存条件影响剧烈，运用理论分析、相似模拟以及现场实测相结合方法，对浅埋厚基岩条件下综放工作面覆岩结构特征及其矿压显现规律进行了研究。研究结果表明：较低的切向抗拉强度导致厚层基本顶分层垮落，高低位分层的位移空间及垮落形态存在明显差异|液压支架主要承载冒落带高度范围内岩体的重量载荷。最后通过现场矿压规律实测验证了理论分析的正确性。研究结果为类似地质条件下工作面的支架选型及矿压控制提供了重要依据。

Study on Overburden Structure and Law of Strata Behavior in Fully Mechanized Caving Face with Shallow Depth and Thick Bedrock

The overburden structure and the law of strata behavior in working face are strongly influenced by the coal seam occurrence conditions. Using theoretical analysis ,similar simulation and field measurement, the structural characteristics of overburden and the laws of strata behavior in fully mechanized caving face under the condition of shallow depth and thick bedrock were studied. The results show that the lower tangential tensile strength results in the layered collapse of the thick basic roof. The displacement space and collapse shape of the high and low layers are obviously different. The hydraulic support mainly bears the weight load of rock mass within the height range of the caving zone, and then determines the working resistance of the support based on that. Finally, the correctness of the theoretical analysis is verified by the field measurement of strata behavior law. The research results provide an important basis for the support selection and rock pressure control of working face under similar geological conditions.