绿塘煤矿软岩巷道锚注支护技术研究

Research on bolt-injection support technology of soft rock roadway in Lvtang Coal Mine

针对绿塘煤矿软岩巷道在高地应力和回采动压叠加影响下出现非线性的软岩大变形问题以及支护构件严重破坏的现象,决定对6_(中)S105工作面回风顺槽采用锚注支护技术。通过高压注浆的方式改变围岩的力学性质,增加围岩的整体性。现场应用情况表明:采用锚注支护技术后,顺槽变形明显减小,能够满足生产的需要。

In view of the large deformation of nonlinear soft rock and the serious damage of supporting members under the superposition of high in-situ stress and mining dynamic pressure in the soft rock roadway of Lvtang coal mine,the bolt-injection support technology is adopted for the tail entry of S105 working face in No.6.The mechanical properties of surrounding rock are changed by high pressure grouting and the integrity of surrounding rock is increased.The field application shows that the bolting and injection support technology can significantly reduce the roadway deformation and meet the needs of production.