中文摘要：

相对于缓倾斜和近水平煤层而言,大倾角煤层开采后覆岩结构特征有所不同,研究大倾角煤层开采覆岩结构特征,对现场实践和安全生产具有重要的指导意义。针对霍州矿区庞庞塔5-103工作面,采用数值计算软件FLAC3D、UDEC分别模拟了不同倾角下煤层开采过程中应力场的演化以及覆岩的破坏过程。通过对比分析,总结了随倾角变化应力场、＂三带＂的演化特征及煤壁、底板的破坏规律。

英文摘要：

Compared to the mining of gently inclined coal seam and flat seam,the overburden structure of coal swam with large inclined angle is of different characteristics after mining.So the study of overburden structure in mining deeply inclined coal seam has a great significance to production practices and the safety in production.In view of situation of 5-103 working face located in Pangpang Ta mining area of Huozhou coal mine,the evolution of stress field and the process of overburden failure during mining coal with different inclined angle were simulated by software FLAC3D and UDEC.With the change of irctined angle,the evolution characters of stress field and ＂three zones＂ and the failure law of coal wall and floor were summarized from the contrastive analysis.