近距离煤层煤柱集中应力传递规律研究

Study on the law of concentrated stress transfer in coal pillars of close coal seams

针对近距离煤层开采上层遗留煤柱对下煤层开采的应力影响及应力传递规律问题,基于数值模拟对山西小峪煤业近距离煤层煤柱应力传递规律进行研究,得出在上层遗留煤柱中存在集中应力,并以一定的应力传递角向下传递,在上层煤柱两侧一定范围内出现应力升高现象,为类似条件下的煤炭开采提供参考依据。

For the problem of stress influence and stress transfer law of the coal pillar left in the upper layer of the close coal seam mining on the lower coal seam mining,the stress transfer law of the coal pillar in the close coal seam of Xiaoyu Mine in Shanxi was studied based on numerical simulation.It was concluded that there was a concentrated stress in the upper coal pillar,and it was transferred downward with a certain stress transfer angle,and the stress elevation phenomenon occured in a certain range on both sides of the upper coal pillar.It provided a reference basis for coal mining under similar conditions.