沿空巷道中空锚索注浆加固研究

Research on grouting reinforcement of hollow anchor cable in gob-side entry driving

随着煤炭开采强度的增大,矿井开采向深部转移,深部巷道沿空掘巷巷道围岩变形破坏严重,通过FLAC3D数值模拟研究沿空掘巷围岩变形特征,采用中空锚索进行注浆加固。现场实测表明,该支护方式可以有效地控制围岩变形,进一步完善了阳煤一矿的支护体系,具有一定的工程意义。

With the increase of mining intensity, coal mining becomes deeper. The deformation and damage of surrounding rock in gob-side entry drivingof deep roadway is serious. The deformation characteristics of surrounding rock in gob-side entry driv ing are studied by Flac3D numerical simulation, grouting reinforcement by hollow anchor cable is adopted. The field measurementshows that the supporting method can effectively control the deformation of the surrounding rock, further perfecting the supporting system of No. 1 mine in Yangquan Coal Industry, which has a certain engineering significance.