极近距离煤层同采工作面底板应力分布规律研究

Stress Redistribution Law of Floor of Simultaneously Mined Face in Ultra-close Distance Coal Seams

通过力学模型的建立分析研究和数值模拟相结合的方法,对山西华苑煤业9~#、10~#极近距离煤层首采同采工作面上煤层开采后底板的应力分布规律进行研究,得出9~#煤层开采后底板的垂直应力和水平应力分布范围及峰值大小,为该矿极近距离同采工作面合理错距提供参考。

Through the establishment and the analysis to the mechanical model combined with numerical simulation, researched the stress redistribution law of floor strata after the mined coal about the first simultaneously mined face in the 9# and 10# ultra-close distance coal seams in Huayuan coal co., ltd. in Shanxi. It is obtained that the distribution range and peak value of the vertical stress and horizontal stress in the floor after the mining of the 9~ coal,and it could provide a reference to determine the distance for the ultra-close coal seams,