中厚煤层小煤柱护巷切顶卸压技术研究

Research on Roof Cutting and Pressure Relief Technology for Small Coal Pillar Protection in Medium Thick Coal Seams

为避免开采断层上盘煤层对采区煤仓造成采动影响,降低采动压对采区准备巷道的影响,对保护煤柱尺寸进行计算、分析,确定了煤仓保护煤柱尺寸,采取切顶卸压技术对采区煤仓及采区巷道进行保护,为类似地质条件下采区煤仓煤柱尺寸留设提供了宝贵经验。

In order to avoid the impact of mining the coal seam on the upper wall of the fault on the coal bunker in the mining area,and to reduce the impact of mining pressure on the preparation roadway in the mining area,the size of the protective coal pillar was calculated and analyzed,and the size of the protective coal pillar in the coal bunker was determined.The roof cutting and pressure relief technology was adopted to protect the coal bunker and the mining roadway in the mining area,providing valuable experience for retaining the size of the coal pillar in the coal bunker under similar geological conditions.