Abstract: Aiming at the problem of large deformation of surrounding rock of No.2 coal roadway in Gaohe coal mine,which caused by mining on both sides, field monitoring and numerical simulation methods are used to study the deformation and failure characteristics and stress distribution characteristics of the roadway under the condition of bilateral mining,and the reasonable stop-production line position is determined after theoretical analysis of surrounding rock deformation.The results show that the maximum depth of damage of surrounding rock after double-sided mining can reach 4 m, the approach distance of the roadway can reach more than 0.5 m, and the north side of the track roadway is far from the goaf, so the mining influence and deformation damage are smaller; after one-side mining, the main stress tends to be stable after 45 m in front of the stop line, when the two sides are driven, the principal stress tends to be stable after 56 m in front of the stop line; the plastic zone of surrounding rocks within 60 m of stop-mining line during mining on both sides is large and asymmetrical and the plastic zone is small and the shape is regular when 70 m above the stop-line.Combined with theoretical analysis, the reasonable coal pillar size is determined to be 70 m and applied to the 2309 working face and 2304 working face in the following section.The roadway deformation is obviously controlled.