摘要
根据相似理论及1604工作面的地质条件,建立300m超长工作面的相似模型,在模型上开挖巷道,观察其直接顶垮落规律,老顶、直接顶初次来压,周期来压步距。并在实验的基础上探讨了放顶高度,以提高回采率。
Build the similar model of 300m long face according to the similar theory and geological conditions of 1604 face, excavate tunnel in the model, observe the law of immediate-roof caving, the step distance of old-roof and immediate-roof of the first time and cycle pressure. Discuss the roof caving height on the basis of experiment, to improve mining recovery rate.
出处
《现代矿业》
CAS
2010年第4期40-42,共3页
Modern Mining
关键词
超长工作面
相似材料模拟
放顶煤
Long caving face
Similar material simulation
Caving coal
