Abstract:
In order to solve the surrounding rock control problem of mining gateway influenced by close-distance coal seams mining, according to the geological conditions and the deformation failure characteristics of 40107 working face air-return gateway influenced by close-distance coal seams mining in a certain coal mine, the instability failure reasons and its reinforcement mechanism of roadway are analyzed, and the pertinent reinforcement technology scheme is proposed. The results of engineering practice show that cumulative convergence between the roof and floor at 40107 working face air-return gateway is controlled around 202 mm and the cumulative convergence between the two-side walls is controlled around 46 mm; the normal use of roadway is guaranteed.