针对开采沉陷的力学预计问题 ,给出预计的力学模型优化的判别准则 ,并进行了开采沉陷移动值的计算分析 ,表明本文所提出的方法是可行及最合理的。 According to the mechanics prediction problem of mining subsidence, the criterion of optimization for the predicted mechanical model is given, and the calculation and analysis of the mining subsidence value is carried out. The result shows that the method proposed in this paper is feasible and most reasonable.