Special Support Technology of Gob-side Entry Retaining With Non-roadway Side Filling in Thin Coal Seam

Taking a certain mining area of No.2 coal seam in a coal mine as the research object, special support technology of gob-side entry retaining with non-roadway side filling was researched. Based on the geologic features of this mining area, support method of gob-side entry retaining was proposed. The method replaced dense wood prop with single prop, and cooperated intersection hinge roof. The support parameters were calculated, and time-space coordination between each support process was researched. The field measured data showed that this support method had a remarkable effect and strictly controlled the deformation of gob-side entry.