Abstract: at present, the flexible mould concrete gob side entry retaining wall is only suitable for the application under normal conditions, so as to solve the complex supporting conditions of the gob side entry retaining, such as collapse column, fault and fracture development zone, etc., it can achieve better supporting effect. A mine 3307 fully mechanized top coal caving face as the engineering background, the first coal mine in thick coal seam with flexibleformwork concrete along the left lane and anchor arch process air surface. Mainly through the introduction of the collapse column, fault zone in roadway anchor arch support, grouting technology aided ribside support for gob. The engineering practice shows that the flexible formwork concrete gob and anchor arch process system is simple, the construction speed, roadway support, good sealing effect in complex section. Goaf roadway support strength reached coalproduction along the coal mine 3307 fully mechanized top coal caving face, have economic benefits and good application prospect.