关键词: 点柱尺寸, 点柱间距, 上向水平分层充填法, 经济技术指标

Abstract: The size and spacing of the reserved point pillar in the upward horizontal slicing stoping filling method with point pillars will have a great impact on the production of the mine. If the size and spacing of the reserved point pillar are too small or too large，it will lead to insufficient support for the roof， thus affecting the safety of mining. If the size or spacing of the point pillar are too big of too small，the mining loss rate will increase. In this paper，taking a mine as the engineering background，the engineering analogy method and theoretical calculation method are used to study the point pillar setting parameters of the upward horizontal slicing stoping filling method with point pillars of the mine，and the industrial test is carried out.It is finally determined that point pillars with the dimension of 4m×5m and the spacing of 16m× 12m is basically feasible in this mine.

Key words: point pillar size, point pillar spacing, upward horizontal slicing stoping filling method, eco? nomic and technical indicators