深部孤岛工作面巷道围岩控制技术研究

Surrounding Rock Control Technology of Roadway in Deep Isolated Island Working Face

深部孤岛工作面存在高温、高湿、高地应力等情况,相较于普通工作面而言,孤岛工作面巷道围岩应力条件更加复杂,控制难度更大。以马方煤矿1310孤岛工作面回采巷道为研究背景,通过改进优化巷道锚杆索支护参数,使巷道围岩变形得到有效控制。经过现场监测得出巷道两帮最大移近量为273 mm,顶底板最大移近量为144 mm,巷道围岩变形满足生产要求,可为相似条件的工作面巷道围岩控制提供借鉴。

There are high temperature,high humidity,high ground stress and other conditions in the deep isolated island working face.Compared with the ordinary working face,the surrounding rock stress conditions of the isolated island working face are more complex and the control is more difficult.Taking the mining roadway of 1310 isolated island working face in Mafang Coal Mine as the research background,the deformation of roadway surrounding rock can be effectively controlled by optimizing the support parameters of roadway bolt and cable.The field monitoring shows that the maximum displacement of the two sides is 273 mm,the maximum displacement of the roof and floor is 144 mm,and the deformation of roadway surrounding rock meets the production requirements,which can provide reference for the control of roadway surrounding rock of working face with similar conditions.