浅埋煤层顶板分级及灾变预防

On roof classification and disaster prevention of shallow seam

对南梁煤矿浅埋单体长壁工作面的顶板进行了分级,分析了目前工作面的支护状况,提出了通过强制放顶,将顶板初次来压步距及初次来压和周期来压的台阶下沉控制在允许范围内的预防大面积垮落灾变的措施,为预防开采过程中发生大面积来压和实现浅埋煤层单体工作面连续推进具有重要意义。

Based on the roof classification of individual hydraulic prop longwall face in Nanliang mine,the paper analyzed the support condition of the mining face and proposed the measures of forced caving method which can prevent the disaster of large area caving.The method is important to prevent roof disaster and achieve the mining face advancing continuity in individual hydraulic prop working face in shallow seam.