覆岩隔离注浆减沉技术在郑州矿区“三软”和“三下”开采中的研究与应用

Key Points

• The study aims to explore the principles and key parameters of roof rock isolation grouting technology for mining under complex conditions.
• Field experiments to optimize grouting material ratios
• Design of grouting hole layout
• Development of a technical system suitable for specific mining conditions.
• Surface subsidence reduced by over 40%
• Resource recovery rate improved by 15%-20%
• Provides a reference for safe mining and environmental protection in similar areas.