东曲矿14218工作面运输巷顶板稳定性控制技术研究与应用

Research and application of roof stability control technology for 1418 working face of Dongqu Mine

为有效解决14218工作面运输巷顶板易冒顶的问题,针对巷道的地质条件和变形特征,对顶板的稳定性控制技术进行分析,提出长锚杆+长短锚索的支护技术,结合巷道的实际情况设计支护方案,并进行矿压监测。结果表明,层状顶板多层次支护技术实施后,顶板最大下沉量为70 mm,两帮最大移近量为160 mm,有效的控制了巷道冒顶现象的出现,保证了围岩的稳定。

In order to efiectively solve the problem that the roof caving of the 14218 working face transportation,the specific geological conditions and deformation characteristics of the roadway and the stability control technology of the roof were analyzed.The support technology of long anchor rod+long and short anchor cable was proposed,combined with the roadway.The specific circumstances of the support program were specifically designed and monitored for mine pressure.The results showed that after the multi-layer support technology of layered roof was implemented,the maximum subsidence of the roof was 70 mm,and the maximum displacement of the two sides was 160 mm,which effectively controlled the appearance of roadway roofing and ensured the stability of surrounding rock.