本文运用 8 -2 1节点等参三维实体单元有限元分析模型 ,对链子崖危岩体处于基本荷载、地震及防治工程条件下的位移进行了模拟 ,并与监测数据进行对比。临空块体、煤层采空区、R2 0 3软层为危岩体稳定的关键块体的结论 ,证明链子崖危岩体锚固和煤层采空区回填是合理的 ,其防治工程是有效的 In this paper, the finite element analysis model of 8-2 1-node isoparametric three-dimensional solid element is used to simulate the displacement of the strait-linked dangerous rock mass under the basic load, earthquake and control engineering conditions, and compared with the monitoring data. It is concluded that the R2 0 3 soft layer is the key block of the dangerous rock mass, which proves that the anchoring of the chain submarine rock mass and the backfilling of the coal seam goaf are reasonable, and the prevention and treatment works are effective