Therefore, the method of grouting bed separation can be adopted to ensure the long-term stability of the main key stratum, and eliminate the rock burst danger induced by main key stratum break.

• 因此，可采用覆岩离层注浆等技术手段保证覆岩主关键层的长期稳定，消除主关键层岩破断引发的冲击矿压危险。