厚煤层沿空掘巷锚杆支护参数优化实践研究

谢桥矿1131(3)工作面为孤岛工作面,由于采用留小煤柱的沿空掘巷,该面的回采巷道不仅承受本工作面的采动影响,而且还承受上区段工作面的重复采动影响。通过数值模拟研究不同支护参数条件下巷道围岩变形规律,并且在此基础上获得了合理的巷道锚杆支护参数,进而对巷道进行了有效的支护。工业性试验表明,巷道支护效果良好,达到了预期的效果。

Study on Optomization Practices of Bolting Support Parameters of Goaf-side Roadway Driving in Thick Seam

Xieqiao colliery 1131(3) work face is the isolated island work face,because of applying the small pillar in the one side of the roadway,the roadway of the work face is not only beared the work face itself mining influence,but also the repeated mining influence of the upper sector.The article studied the roadway surrounding rock deformation rule in the different support parameters by the means of numerical simulation,and gained the reasonable roadway bolting support parameters in the basis of the numerical simulation,then has the effect support for the roadway.It is manifest in the industrial experiment that the roadway support had the fine effect and achieve the expected result.