Abstract: The stability of drenching roadway and its effective treatment are of great significance for underground excavation of mines. Taking a copper-cobalt mine in Africa as the research background，this paper analyzes the hydrogeological conditions and surrounding rock stability of the mining area，analyzes the causes and stability of the water spray on the side wall of the roadway，and gives the treatment measures for the water spray on the side wall of the roadway. The results show that due to the influence of regional geology，the roadway watering comes from tectonic confined water，regional watering and geological borehole watering. Grouting reinforcement can effectively control the water spray on the sidewall of roadway. Through the quantitative analysis of the change of grouting pressure，the grouting is divided into four stages : micropressure- diffusion-reinforcement-splitting. The variation characteristics of surrounding rock and slurry of grouting holes in each stage are obtained，which has important guiding significance for on-site grouting construction.

Key words: water-drenching woadway, water inrush channel, roadway stability, roadway water treat? ment