前和煤业深部大巷围岩稳定性控制技术研究

Study on surrounding rock stability control technology of deep roadway in Qianhe Coal Industry

为有效控制前和煤业延伸设计中轨道暗斜井的合理变形,基于巷道现有支护存在的问题,以及巷道围岩应力特征,提出了3种围岩控制技术,在原有支护设计上采取修复加固方案,并对巷道围岩表面位移量和深部围岩变化进行持续监测。结果表明:实施修复加固方案后,巷道在现有支护方式下两帮移进量为131 mm,顶底板变形量为451 mm,满足巷道的安全使用要求。

In order to effectively control the reasonable deformation of the track inclined shaft in the pre-design and the extension design of the coal industry, three kinds of surrounding rock control technologies were proposed based on the existing supporting problems and the stress characteristics of the surrounding rock of the roadway. In the original supporting design, repair and reinforcement schemes were adopted, and the surface displacement of the surrounding rock of the roadway and the change of the deep surrounding rock were continuously monitored. The results showed that the displacement of two sides and the deformation of roof and floor were only 131 mm and 451 mm respectively under the existing support mode after the implementation of the rehabilitation and reinforcement scheme, which met the requirements of safe use of the roadway.