白垩系软岩地层半煤岩巷道支护技术研究

Study on Support Technology of Mine Roadway in Semi Coal and Rock of Cretaceous Soft Rock Stratum

查干淖尔一号矿井2煤回风大巷是典型的弱胶结软弱围岩巷道;部分地段为半煤岩巷道,顶板为全岩,采用"一次锚网索喷支护,二次锚注+底板加固"的支护方案,有效地控制了巷道变形破坏,取得了良好的效果,为类似地层巷道支护设计和施工提供了经验。

No.2 Seam Air Returning Roadway was a typical mine roadway with a weak cemented soft surrounding rock in Cha’gan Nao’er No .1 Mine .Partical section of the mine roadway was a mine semi coal and rock roadway and the roof was full rock .“A primary bolt /steel mesh/anchor/shotcrete and secondary bolt /grouting ＋ floor reinforcement”support plan applied could effectively control the defor-mation failure of the mine roadway ,could obtain a good effect and could provide the experiences to the support design and construction of the mine roadway in the similar strata.