东滩煤矿3311工作面沿空顺槽支护技术实践

Practice on Support Technology in Gob-side Entry at 3311 Working Face in Dongtan Colliery

东滩煤矿3311综放工作面轨道顺槽采用沿空巷道方式;为解决回采期间受动压影响巷道顶帮变形等不安全问题,运用注浆、施工29U型钢梁加固等方式加强巷道支护强度,减少巷道变形;3311综放工作面轨道顺槽新的支护方案实施后减少了回采期间巷修工作量,确保了工作面平稳回采和作业人员安全。

Aiming at the deformation of roof and sides due to the dynamic pressure during the stoping at gob-side entry at 3311 fully-mechanized caving face in Dongtan Colliery,the author propose the application of the reinforcement support with grouting and 29U-shaped steel beam,which can reduce the roadway deformation and maintenance,guaranteeing the smooth stoping and the safety of the operators.