Study and prospect on development of mine polyurethane grouting reinforcement materials
Thanks to its excellent comprehensive performance,polyurethane grouting reinforcement materials are in a leading position among many polymer chemistry grouting materials,especially in the field of grouting reinforcement of coal mine roadways.To ensure the safe application of polyurethane grouting reinforcement materials in coal mine reinforcement,some issues need to be addressed such as poor flame retardancy,high reaction temperature,low strength,etc.Based on review of the safety issues of polyurethane grouting reinforcement materials in underground construction,the research progress of poly-urethane grouting reinforcement materials both domestically and internationally in recent years is analyzed,with a focus on reducing reaction temperature and improving flame retardancy while ensuring material strength.Finally,the application and development of materials are prospected.
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