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Abstract In order to ensure the safe operation of well casing in abandoned roadway section, the abandoned roadway section in the mine water accumulation area was closed especially, which was one of the main problems faced by mine water prevention and control. Based on the actual situation of air inlet inclined shaft in Nanmusi Mine, this paper introduced three projects for water prevention and control in abandoned roadway section, and optimized grouting plugging reinforcement project. The effect inspection after construction showed that the reduction rate of well casing water inflow is 60% ~ 70%, and abandoned roadway section was effectively reinforced, which formed a whole with the water-seal wall and surrounding rock coal (rock) column. The study had a positive preventive effect on closing mine water accumulation, and had certain guiding significance for the selection of water prevention and control project in mines with similar conditions.
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