崔家寨矿E 12504工作面矿压显现的特殊规律

摘要

In order to study the impact of mining E12506 face to adjacent E12504 return airway roadway,set observation stations in E12504 return airway roadway to observe the underground pressure and analyze the observation results.It is showed that during the excavation of roadway,the deformation of overall surrounding rock is small,sur-face separation is not serious,the maximum displacement is caused by the deformation of deep rock.Multi-displace-ment meter index change status in turn is that the left side index change is maximum,secondly is the right side,the roof displacement meter index change is minimum.After affected by adjacent E12506 face mining,the maximum of multi-displacement meter index change in the left side of two stations all is 20 ~30 mm.The conclusion has a cer-tain theoretical guiding significance for prediction research on the mine pressure law of the working faces under similar conditions.%崔家寨煤矿E12504近距离煤层工作面回风巷道受到邻近12506工作面回采上方已采完的12604工作面保护煤柱的影响。为了研究E12506工作面采动对相邻的E12504回风巷的影响，在E12504回风巷布置观测站进行矿压观测，并对矿压观测结果进行分析。结果表明：巷道在掘进期间，整体围岩变形量不大，表面离层现象不严重，最大位移都是由深部岩体变形引起的；多点位移计指数变化状况依次为左帮指数变化最大，其次为右帮，顶板多点位移计指数变化最小；在受邻近的E12506工作面采动影响后，两个测站左帮的多点位移计指数变化最大值均在20～30 mm。该结论对类似条件下工作面矿压规律的预测研究具有一定的理论指导意义。