深部大倾角综放工作面顶板运移相似材料模拟研究

Study on similar displacement materials simulation on roof in deep and large inclined fully mechanized working face

大倾角煤层开采的顶板控制一直是个难题,采取何种支护措施必须要研究顶板的破离规律,结合永定庄煤业3237工作面地质条件,在实验室建立了相似材料模型,通过模拟工作面在自开切眼向前推进过程中确定初次来压步距、顶板垮落形态及首次周期来压、二次周期来压之间的关系,为该工作面顶板控制提供了参考。

Large inclined coal seam mining has been always a difficult problem,the support measure depends on the lawof roof broken,combined with the geological condition 3237 working face in Yongdingzhuang Mine,the similar materials model was set up in the lab,first roof weighting pace,roof caving forms,relationship between periodic weighting for the first time and second periodic time were settled in the open cut eye advancing of working face model,which provided reference for working face roof control.