Research and Application of Surrounding Rock Support Design of Gob-side Entry

In view of the poor stability of surrounding rock in the gob roadway of Nanyangpo Coal Mine, the engineering geological conditions were analyzed, while studying the distribution regularity of surrounding rock stress and the principle of bolt support, the stress distribution, plastic zone distribution and surrounding rock displacement of roadway surrounding rock under the condition that with or without support were compared and analyzed by numerical simulation method, the effectiveness of roadway support method with bolt as the main body was verified.Taking the 5800 gob-side entry of Nanyangpo Coal Mine as the engineering background, the supporting method of it was designed as follows:anchor bar + anchor cable + steel mesh + steel bar beam (the W type steel belt) + wood tray + coal pillar grouting reinforcement, and through field monitoring, the practical effect of the support scheme was further verified. The application results show that the surrounding rock control effect of the support scheme is good and can meet the needs of safe production.