特厚煤层综放强采动回采巷道围岩稳定性控制技术研究

Study on surrounding rock stability control technology of fully mechanized caving mining face in extra-thick coal seam

为有效控制特厚煤层9-101综放工作面强采动影响下巷道围岩的变形,通过分析巷道围岩变形规律及支护结构破坏特征,提出了针对9-101综放工作面的围岩支护方案,并对采动期间的围岩变形量进行持续监测。结果表明,9-101工作面运输巷在现有支护方式下,顶底板的最大移近量为238 mm,两帮的最大移近量为165 mm,围岩变形量合理,满足安全生产要求。

In order to effectively control the deformation of surrounding rock of roadway under the influence of strong mining action in 9-101 fully mechanized caving face, by analyzing the deformation law of surrounding rock and the failure characteristics of supporting structure, the surrounding rock support scheme of the working face and continuous monitoring of the deformation of surrounding rock during mining were given. The results showed that under the existing support mode,the maximum displacement of the top and bottom plates of the 9-101 working face was 238 mm, and the maximum displacement of the two sides was 165 mm. The deformation of the surrounding rock was reasonable and met the requirements of safe production.