急斜近距煤层联合开采覆岩运移规律研究

Study of Overburden Transport Law in Mining Steep and Close Seam

急斜近距煤层由于煤层间距较近，在同一开采区段内开采任一煤层时，均会对邻近煤层构成破坏性影响。因而急斜近距煤层科学的采煤方法是长期困扰采矿工作者的难题。针对乌鲁木齐矿区碱沟煤矿的急斜近距较薄厚煤层煤层，通过有限元数值计算和相似模拟方法，对不同方案的联合开采方法进行了模拟，研究了不同方案对上覆围岩稳定性的影响，研究表明：探讨了联合开采急斜近距煤层的科学性，为乌鲁木齐矿区以及类似条件下急斜近距煤层的合理、安全、经济的开发提供了重要的参考依据。

Independent mining in steep and close seam can influence the next mining of the adjacent coal seam destructively , thus the scientific mining method is always the difficult problem to the mining personnel. Urumqi coalfield is the rare region in which storage and mining steep seam completely in China and even in the world, there are more than 30 layers steep seams with different thickness and distance, its special storage condition makes it become the attentive focus in mining circles in the world. To the Jiangou coalmine in Urumqi diggings , the different schemes for combining mining are studied by using the FEM numerical simulation ,the stability influence to the upper surrounding rock is re.arched, the scientific of combining mining in steep and close seam is discussed , the important basis of reasonable, safe and economic exploitation is provided for the Urumqi coal mine and similar mining in the west.