Abstract：As the mining depth increases，many hazards related to the deep overburden collapse such as pressure bump，coal and gas burst will appear，which are caused by the movement of overlying strata. A study of the abutment pressure rule of overlying strata spatial structures is the theoretical basis of controlling the hazards. In this paper，the overlying strata from longwall face to the Earth¢s face as multilayer spatial structures are considered. Based on microseismic monitoring，the movement rules of multilayer spatial structures are studied and the computing models of abutment pressure are set up. The rule of abutment pressure is also analyzed and the computation formulae are gained by using the elasticity theory. The computation results are compared with the results of field microseismic monitoring. Field experiments in Huafeng coal mine show clearly that this method is useful for the prediction of abutment pressure and can provide accurate theoretical basis for controlling the mining hazards caused by the movement of overlying strata.
