近距离煤层下层煤层普采工作面巷道压力显现规律的研究

Study on Law of Roadway Pressure Manifestation in Common Mining Face of Lower Coal Seam in Close Range

近距离煤层开采过程中,受上区段巷道保护煤柱的影响,下层巷道开采过程中会出现应力集中.通过对新疆某矿下区段煤层进行竖直模拟,通过巷道位移变化,巷道位移变化速率,以及竖直应力、水平应力、最大主应力,得出下层煤层压力显现情况,为巷道支护提供理论依据.

In the process of short-distance coal seam mining,the stress concentration will occur in the process of mining the lower roadway under the influence of the upper section of the roadway protection coal pillar.Through vertical simulation of coal seam in a coal mine in Xinjiang,through the roadway displacement change,roadway displacement change rate,as well as the vertical stress,horizontal stress and the maximum principal stress,get the lower coal seam pressure show,provide theoretical basis for roadway support.