Abstract: In response to the safe mining problems of pressed coal under mine buildings （structures） owned by Lu’an Group,short wall interval paste filling mining technology is proposed to liberate overburden resources.The process flow of short wall interval paste filling is expounded,and the width of mining strips and the strength of filling bodies are determined.Based on the occurrence characteristics of coal seams,a numerical calculation model for short wall interval paste filling mining is established to study the movement and deformation characteristics of overburden rock,filling body compression deformation characteristics,and surface movement and deformation amount in each round of short wall interval filling mining.The research results indicate that with the increase of short wall interval mining rounds,the stress transfer path has a characteristic of stepwise increasing.The filling bodies of the first round is subjected to the superimposed disturbance of the second,third,and fourth rounds of stope branch roadway mining and filling,and bear the maximum load.The loads borne by the filling bodies in the other three stages show a stepwise decreasing;The roof deflection deformation is manifested from bottom to top as a "sine shaped" bending subsidence zone influenced by pressure arches,and the distribution characteristics of conventional bending subsidence zones similar to long wall mining;With the increase of short wall interval mining rounds,the stress on the roof of the mining disturbance area is released,and the compressive stress concentration phenomenon is occurred in the interval strip coal pillars.The surface movement and deformation amount gradually increases,but the movement and deformation amount is much smaller than the grade index in level I protection,and the filling control effect is good.