中文摘要：

以离石—军渡高速公路下伏康家沟煤矿采矿地质条件为原型,采用相似材料模拟实验方法,对多煤层开采引起的覆岩移动及地表变形规律进行了研究。相似模拟实验结果表明：多煤层开采条件下,随着煤层累计采厚的增加,采空区＂三带＂覆岩下沉量和采空区地表沉降量、地表倾斜变形、地表水平位移及地表曲率变形都呈增大趋势,采空区上覆岩体更加破碎,地表变形更加强烈。研究成果可为高速公路下伏多煤层采空区的治理设计提供依据。

英文摘要：

Taking geological conditions of Kangjiagou coal mine under Lishi—Jundu freeway as a prototype,similar material simulation was carried out for examining the behavior of overlying rock movement and surface deformation with multi-coal seam mining.The results show that under the condition of multi-coal seam mining,with the increase of total thickness of coal seam,the overlying rock subsidence of three zones of gob and surface subsidence,surface lean deformation,surface level movement,surface curvature deformation all show an increasing tendency,the overlying rock of gob is more broken,the surface deformation is more intense.The results provide the basis for the treatment design of gob with multi-coal seam under freeway.