Surrounding Rock Control Technology of Gob-side Entry Retaining in Zhangcun Coal Mine

4224 mining area in Jizhong Energy Xingtai Zhangcun Coal Mine is taken as the study object, combined with site investigation, theoretical calculation and numerical simulation method, the roadway stability control technology for gob-side entry retaining in 2^# coal mine is studied. The supporting method of no artificial filling roadside support body is proposed. Supplying anchor and erecting single pillars are used as means to strengthen the support. The waste rock is effectively prevented to flow into the roadway through hanging net on upper roadway-side.