One-time recovery method of top pillars and bottom pillars with cemented filling to build temporary support structure

The invention provides a one-time recovery method of top pillars and bottom pillars with cemented filling to build a temporary support structure. The one-time recovery method comprises the steps thata goaf filling body is grouted and reinforced; the roadway type variable-layer size mining is performed, the filling body above a horizontal level pillar reaches the predetermined strength, the odd number of roadways in a first layer is mined and subjected to cemented filling with tailings, and then the even number of the roadways is mined by the same method and subjected to cemented filling withthe tailings; a third layer is mined, the odd number of the roadways is mined first and subjected to cemented filling with the tailings, and the even number of the roadways is mined and subjected to cemented filling with the tailings; finally, a second layer is mined, and the mining method is the same as that of the third layer; in the charging blasting of the even number of the roadways in the second layer and the third l