Abstract: Aiming at the special situation of working face across floor roadway,this paper apply mechanics analysis，numerical simulation，field practice and research of deep mining across the mining under the condition of the stability of surrounding rock of roadway.The results show that the stress of the roadway surrounding rock can be calculated each component by theory of elastoplastic analysis across the force characteristic of surrounding rock in roadway based on the rheological properties of rock material.Numerical calculation shows that roadway influenced by mining the front abutment pressure and the lateral stress superposition of stress influence.And with the working face advancing，weakening the influence of abutment pressure，lateral stress will affect the stability of surrounding rock of roadway long-term.Determine the rheological effect of coal seam working face end under the action of the lateral stress is one of the important factors that influence across mining roadway stability.Mining water seepage grouting seal technology，to ensure that the surrounding rock of roadway is not soften，maintain the strength of surrounding rock of roadway and carrying capacity，achieved the effect to control the stability of surrounding rock of roadway.

Key words: Working face across floor roadway, Rheological property, Lateral abutment pressure, Crack blocking technology