Soft Roadway Deformation Characteristics and Supporting Countermeasures of Deep Shaft in Panyidong Mine

For solving the control problem of soft rock roadway stability in deep complex geological conditions with high ground stress, the deformation characteristics of the surrounding rock in a buried depth of 848 m tape machine roadway in the west wing of Panyidong Mine in Huainan were studied with FLAC^3D. The studied results indicated that the support of the deep soft rock roadway is clearly related to the high ground stress, the mechanical properties of surrounding rock and the supporting strength. The failure pattern of rock mainly includes shear failure and tension-shear failure. Besides it's verified that floor supporting is conducive to the roadway stability control. Based on the combined support theory, the combined support scheme with a concept of strengthening the consolidation repair, transferring the stress and expanding load ring for the soft rock roadway was proposed which achieves a good supporting effect.