“三软”不稳定厚煤层复采工作面矿压显现特征研究

Study on Characteristics of Strata Behaviors of Re- mining Face in Unstable Soft Thick Coal Seam with soft Roof and Floor

为提高资源回收率,在豫西"三软"煤层矿区,进行煤层复采,回收残留煤炭。通过矿压观测与分析,获得了复采区工作面支柱工作阻力大于原始煤层区;工作面来压较明显;复采区工作面来压步距较短;复采工作面压力分布不均匀等矿压显现的重要特征,为复采采场支护和工艺技术研究提供了基础资料。

To increase the recovery rate,re- mining was conducted to recover residual coal in western Henan Province soft coal seam mining area with soft roof and floor.The strata observation and analysis show that,the working resistance of face support in re- mining area is greater than original seam,the periodical weighting is more obvious,the weighting step is shorter and roof pressure distribution is non- uniform.The study could provide basic data for re- mining technique and face support research.