中文摘要：

为了深入研究大倾角厚煤层大采高工作面顶板垮落特征,理论计算了25213大倾角大采高工作面顶板各岩层载荷,并采用理论分析、相似材料模拟实验和FLAC3D数值模拟相结合的方法,研究了25213工作面顶板垮落规律,初步确定了25213工作面直接顶初次垮落步距24m左右,基本顶初次垮落步距57m左右,基本顶周期垮落步距24m左右,对工作面后期的安全回采和矿压控制具有重要的借鉴意义。

英文摘要：

In order to deeply study of roof collapse character of large mining height working face under large incline angle coal seam,and every stratum loading of roof of 25213 working face with large mining height and large incline angle,and then theory analysis,simulation experiment and FLAC3 Dnumerical simulation were applied,and roof collapse law of 25213 working face was studied,the initially collapse space of immediate roof of 25213 working face was 24 m,the initially collapse space of main roof was 57 m,periodic collapse span was about 24 m,it references for safety mining and mine pressure control of working face.