【摘要】 以岩石力学、流体力学为基础，采用相似材料模拟手段，对覆岩离层充填减缓地表沉降机理进行了系统的实验室研究．揭示了覆岩内部离层产生和发展的时间与空间规律；探讨了浆液在离层空间的流动规律和存在状态，阐明了充填材料脱水后与注浆压力的关系及其对减沉效果的影响作用；提出了浆液以钻孔为中心呈二向点源式流动特征，为解决实际工程问题提供了科学依据．更多还原

【Abstract】 Based on rock mechanics and fluid mechanics, the mechanism of grouting separated strata to slow down surface subsidence is systematically studied in labratory by means of similar material simulation, the temporal and spatial law of the formation and development of the separated strata inside covered rock is delineated, the law of flow and state of existence of slurry in the space of separated strata is discussed, the relation ship between dehydrauted grouting material and grouting pressure and impact on the effectiveness of reducing surface subsidence is described, the flowing pattern of slurry of a twodirection source round the drilling hole is presented, consequently, it provides scientific basis for practical engineering application.更多还原