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针对充填对底板变形的影响,基于地基塑性变形区边界方程求解思想,提出了充填和无充填时底板塑性区边界方程,据此确定塑性区范围。结合实例分析,比较了充填和无充填时底板塑性区大小,研究了充填对底板变形的影响,得出了充填减小时煤柱下底板塑性变形区域,为更好地利用条带充填开采技术,指导底板巷道合理布置与底板维护,提高煤炭开采率,减少煤矿安全事故提供了依据。
According to the influence of filling on the deformation of the floor, based on the idea of solving the boundary equation of the plastic deformation zone, the boundary equation of the plastic zone of the floor when filling and without filling is proposed, and the range of plastic zone is determined. The influence of filling on the deformation of the bottom plate was studied. The plastic deformation area of the lower coal pillar was obtained when the filling decreased. In order to make better use of strip filling technology, Guiding the reasonable arrangement of floor roadway and floor maintenance, improve the rate of coal mining, reduce coal mine safety accidents provided the basis.