大倾角松软煤层综放面矿压规律及控制

针对五阳煤矿5102工作面倾角大、煤层松软、煤层起伏大、综放开采的条件，利用UDEC数值模拟软件分别通过沿工作面走向和倾向剖面建立模型，对顶板（煤）、底板的位移和应力变化进行了研究．结果表明：5102工作面在开采过程中，上部端头的空顶距将增加，工作面中、下部的片帮、冒顶现象加剧，必须加以控制才能防止事故的发生．通过加固煤壁、优化推进方式和提高推进速度等技术措施进行控制，该工作面26d共安全出煤4．5万t，取得了良好的技术经济效果．

Strata Behavior in Fully Mechanized Top Coal Caving Face of Steep Soft Coal Seams and Its Control

The coal seam of No. 5102 face in Wuyang coal mine is steep, soft, and undulate. Aiming at this problem, the displacement and stress of top coal, roof and floor were researched by using UDEC software. The results show that, in the process of mining 5102 working face, rib fall, roof fall and unsupported roof distance in the upper head will increase, increasing the probability of roof falling in the middle and lower part of the working face. So some corresponding measures must be taken to control the possible hazards. Through strengthening the coal wall, optimizing the advancing way, and enhancing the advancing speed, the 5102 working face has exploitated about 45 000 tons of coal in 26 days without any accident taking place. The technical and economic benefits are remarkable.