深井高应力硬岩巷道围岩变形特征及控制技术研究

Study on Deformation Characteristics and Control Technology of Surrounding Rock of High Stress Hard Rock Roadway in Deep Well

为了研究郓城煤矿深井高应力硬岩巷道围岩变形特征及其控制技术,采用理论分析、数值模拟和现场观测相结合的方法,对郓城煤矿一采区轨道大巷掘进前后应力及位移变化规律进行研究。结果表明拉伸破坏主要在巷道顶底板围岩,而剪切破坏则位于巷道两帮部位,确定了锚网索喷+T型钢带的支护方法,有效地控制轨道大巷的围岩变形控制,为日后类似的地质条件下的深井高应力硬岩内的巷道支护,提供了重要的参考依据和研究价值。

In order to study the deformation characteristics and control technology of surrounding rock in deep well and high stress hard rock roadway in Yuncheng coal mine,the variation rule of stress and displacement before and after heading in Yuncheng mining area is studied by means of theoretical analysis,numerical simulation and field observation.The results show that the tensile failure is mainly located in the surrounding rock of the roof and floor,while the shear failure is located in the two sides of the roadway.The tensile failure is mainly in the surrounding rock of the roof and floor,while the shear failure is located in the two sides of the roadway,the anchor rope+T type steel support method,deformation control of surrounding rock effectively control track roadway,is similar to the geological conditions of deep well after under high stress in hard rock roadway support,provides important reference and research value.