中文摘要：

为了能够对厚煤层资源充分的利用，研究了采用窄煤柱护巷技术提高特厚煤层的采出率。文章以国外孟巴矿特厚煤层地质条件为背景，采用FLAC。。数值模拟软件分析了该矿不同宽度煤柱内部Y方向应力与位移分布情况，理论分析可知留小煤柱与宽煤柱对巷道起到保护的作用基本一致。在1210工作面掘进巷道中留设5m的小煤柱和30m的宽煤柱进行现场工业性实验，通过KBD5电磁辐射采集的数据分析知宽窄煤柱范围内煤柱均处于稳定状态。

英文摘要：

In order to make full use of the coal resources in thick coal seam, the technology of roadway supporting with narrow coal pillar was studied to improve recovery ratio. Based on the geological conditions of the extremely thick coal seam in Barapukuria mine, FLAC2D numerical simulation was applied to analyze the Y direction stress and displacement distribution of coal pillars with different width. Theoretical analysis shows that remaining small pillars and wide pillars have the same support effect. Field test was conducted in 1210 mining face on coal pillars with the width of 5m and 30m, and the data collected by KBD5 electromagnetic radiation detector shows the coal two pillars are both stable. The study is an important basis for the utilization of narrow coal pillar in roadway supporting, which could improve the recovery ratio and has great economic significance for thick coal seam mining in China.