关键词: 浅埋近距离煤层, 重复采动, 覆岩运移规律, 数值模拟

Abstract: Taking Shigetai Coal Mine in Shendong mining area as the research object，the numerical simulation，mine pressure measurement and similar simulation test methods are comprehensively used to compare and analyze the stress distribution and movement evolution law of overlying rock under the condi‐ tions of single coal seam mining and repeated mining，and the influence mechanism of repeated mining on overlying rock movement in shallow buried close distance coal seams is discussed. The results show that compared with single coal seam mining，the stress concentration degree of overburden support is reduced during repeated mining，but the high support stress area is formed near the stop line of upper coal seam， which is easy to induce support crushing accident. With the advancement of lower coal seam mining，the in‐ terlayer overlying rock is broken，and the overlying rock subsidence shows the dynamic characteristics of 'sudden increase-slowing down'，and the influence range of subsidence continues to expand. Repeated min‐ ing promotes the evolution of overburden structure to a single caving zone，which aggravates the risk of roof instability in the working face. The research results can provide a theoretical basis for safe and efficient min‐ ing of shallow buried close distance coal seams.

Key words: shallow buried close distance coal seams, repeated mining, law of overlying rock move‐ ment, numerical simulation