中文摘要：

常村煤矿S3-9工作面回风巷受回采动压影响，巷道发生特大变形，积水严重，巷道高度由3．2m收敛为1．2m。分析了该段泥岩顶板岩样成分，采用数值软件UDEC对S3—9工作面回采后巷道的变形、破坏机理、注浆参数及注浆效果等进行了分析，决定采用水泥化学浆和二次注浆锚索进行综合锚注加固，并在S3—9工作面回风巷进行了试验。实践结果表明顶底板最大移近量20mm，两帮最大移近量30mm，变形得到有效控制。

英文摘要：

Influenced by mining dynamic pressure, serious deformation had appeared in the S3-9 return airway of Changeun Coal Mine, water accumulation was also serious there, so that the height of roadway reduced from 3.2 m to 1.2 m. In this paper, the ingredients of rock sam- ples from mudstone roof were analyzed, then the deformation and failure mechanism, slip casting parameters and effects after mining were also analyzed by using UDEC software. After the analy- sis, cement chemical grouting and secondary grouting cable anchors were adopted for comprehen- sive bolt-grouting reinforce, which was then experimented in return airway of S3-9 working face. The results showed that the biggest convergence between roof and floor was 20 mm and the big- gest convergence between roadway＇s sides was 30 ram, so the deformation of roadway was con- trolled effectively.