中文摘要：

在理论分析工作面煤壁破碎机理的基础上．运用课题组研制的水灰比可调控的高性能无机注浆材料结合层次分区注浆加固技术在末采阶段进行注浆加固。浅部注浆形成有效的止浆层，显著地提高了深部注浆效果。工作面的破碎煤体得到有效的充填和固结，煤体整体性得到显著的提高。

英文摘要：

Using the water cement ratio regulation of high performance inorganic grouting materials developed by the research group in combination with hierarchical partitioning grouting reinforcement technology at the end of the recovery stage of grouting reinforcement, in the theoretical analysis on the basis of working face coal wall fracture mechanism. Shallow grouting grout layer effectively, improving the effect of grouting in deep significantly. The broken coal filling and consolidation effectively, improving the integrity of the coal significantly.