Abstract: This paper discusses the material parameters,equipment characteristics and the grouting influencing factors of a new chemical grout reinforcement technology,and determines the field grouting reinforcement programs and the construction parameters according to the situations that the roof fall and rib spalling accidents very easily happened in the 3122 working face of Jinneng coal industry company.This process effectively resolves the problems of rib spalling and leaky roof in working face,which provides a reference for the similar mine.