向斜轴部煤层巷道支护技术研究

Research on Coal Seam Roadway Supporting Technology of Syncline Axis

崔木煤矿北翼带式输送机大巷布置在花园坡向斜轴部,由于受到向斜轴部的高应力影响,巷道围岩在掘进期间变形已非常明显。为了保证大巷在使用期间满足生产要求,针对现场的变形实际情况采用高强预应力锚梁网索支护技术。现场的试验结果表明,该方案能够有效控制围岩变形。

The layout of north belt conveyor roadway in Cuimu coal mine is in Huayuan slope syncline. Because it is affected by high stress from the axial part of the syncline, the deformation of surrounding rock is huge during roadway excavation. In order to ensure the support to protect the production, developed the support technology of high-strength prestressing anchor beam mesh cable according to the actual situation. It is obvious that this technology can effectively control the deformation of surrounding rock, which was proved by the test-in-place result.