Abstract: With the increasing of mining depth in our country, the deformation control of deep soft rock roadway has become extremely difficult, and the repairing reinforcement problem of soft rock failed roadway is becoming increasingly serious. Aiming at the control problem that serious deformation and failure of the south soft rock roadway in Yangcheng coal mine, the characters of surrounding rock was revealed by field investigation and drilling TV detection in this paper. Based on the principle of bolting and grouting support, the bolt- grouting repairing reinforcement technology that high strength prestressed bolt active support around all the cross section, grouting pipe and long grouting anchor reinforcement, and backfill the overbreak floor base bolt- grouting support was raised. In addition, the support parameters and technology was designed reasonably. Finally practical engineering showed that this repairing reinforcement technology could control the surrounding rock deformation and failure effectively and ensured long-term stability of roadway. This repairing reinforcement technology can be popularized in similar failed roadway repairing project.

Key words: deep, soft rock failed roadway, repairing reinforcement, bolting and grouting