窄煤柱锚注联合加固技术的研究与应用

Research and Application of Combined Reinforcement Support Technology of Narrow Coal Pillar and Bolt-grouting

在沿空留(掘)巷条件不具备时,设计工作面须留设保护煤柱。通过对屯兰矿综采工作面布置及顶板特性分析,合理选择了窄煤柱巷道锚注联合支护方案,(采取锚索与注浆相结合的方法),达到提高支护效果、提高煤炭回收率、延长矿井服务年限、确保矿井安全生产目的。

When the conditions of the gob-side entry retaining and roadway driving along goal are not satisfied, the protective coal pillar should be left during the working face design, Based on the analysis of fully-mechanized mining face arrangement and roof features in Tunlan, the study selects the narrow coal pillar roadway and bolt-grouting support scheme （combined method of anchor and grouting） to increase the supporting effect, improve the resources recovery rate, expend the mine service life and guarantee the safe production in mines.