Abstract: Based on theoretical analysis, similar simulation experiments, and field tests, a study was conducted on the movement of overlying strata and the manifestation of mining pressure in a thick sandstone roof of a large mining face in northern Shaanxi. The research results showed that the working resistance P of the hydraulic support was inversely proportional to the length L4 of the direct top suspension, and positively correlated with the length L1 of the basic top cantilever beam, the rotation angle θ, and the strength k1 γ 1h1 of the basic top overlying load; The overall distribution of rock beams in the goaf during the single mining period of the full height working face with large mining height is in an "F" shape, with a basic top initial collapse step distance of about 70 meters, a periodic collapse step distance of about 15 meters, and a mining pressure concentration coefficient of about 1.8; During the secondary mining period, the rock beams around the coal pillars are generally distributed in a "T" shape, with a basic initial collapse step distance of about 50 meters and a periodic collapse step distance of about 15 meters. The concentration coefficient of mining pressure is about 2.2, and the stress concentration of the overlying rock roof is significantly higher during the secondary mining period; The coal pillar area exhibits high stress concentration; The load strength of the support during the secondary mining period of the working face is about 21% higher than that during the single mining period. The increase in working resistance of the hydraulic support during the pressure period is significantly smaller than that during the primary mining. In addition, the stress load of the upper goaf section of the working face is significantly higher; Based on the research results, the mining party has updated a new type of hydraulic support and increased the rated working resistance, effectively improving the safety recovery coefficient of the working face and providing theoretical basis for safe and efficient production in similar mines.