为预测采空区顶板冒落并采取相应的预防措施，提出了基于格子Boltzmann的地下采空区顶板冒落的仿真模型（WD2G9模型）。在该模型中，将采空区顶板冒落过程抽象为全重力活塞推进过程，结合D2Q9模型和D2G9模型，将活塞推进所产生的压缩冲击波在格子Boltzmann的离散网格上进行离散，随着时间的演化进行波动。在仿真过程中可观看冲击波的波动以及空气粒子的演化过程，观测空气速度、压力的变化情况。该方法为采空区顶板冒落灾害的预测和预防提供了新的途径。%In order to predict mined-out area roof caving and adopt relevant prevention measures ,a new simulation physical model (WD2G9) of shock wave created by mined-out area roof caving based on lat-tice Boltzmann was put forward .In this simulation model ,the process of the mined-out area roof caving is abstract as the process of total gravity piston moving .Combined with D2Q9 model and D2G9 model , the compression shock wave created by the piston moving is discreted in the discrete grids of lattice Bolt-zmann model ,and waving as the time evolution .In process of the simulation ,the shock waving and the air particle evolution can be watched ,the change of the air viscosity and the press is observed .This meth-od provides a new way for the mined-out area roof caving prediction and prevention .
展开▼
