覆岩采动离层空间的发育是实施离层注浆充填减沉技术的关键所在。依据覆岩离层产生的机理,利用ADINA有限元软件中有摩擦的接触分析和重启动分析技术,模拟分析了东滩煤层覆岩随工作面推进上方岩层的应力、位移规律及离层的产生、发展规律,采用离散单元节点拟和方法获得了覆岩离层量并与实际工程进行了对比。结果表明:ADINA接触单元能有效地模拟离层发育特征,各岩层的抗弯刚度的差异是引起覆岩离层的主要原因。 The development of overburden mining off-site space is the key to the implementation of off-site grouting filling desilting technology. Based on the mechanism of stratified rock separation and the frictional contact analysis and restart analysis technology in ADINA finite element software, the stress and displacement of overburden strata in Dongtan coal seam with advancing working face are simulated and analyzed. , The law of development, the discrete element node fitting method was used to obtain the overburden strata and compared with the actual project. The results show that the ADINA contact element can effectively simulate the developmental characteristics of the detachment strata. The difference of the flexural rigidity of the strata is the main reason for the stratification of the strata.