三峡工程永久船闸三闸首区开挖变形特征的智能分析

INTELLIGENT ANALYSIS OF DEFORMATION BEHAVIORS OF PERMANENT SHIPLOCK OF THE THREE GORGES PROJECT

针对三峡工程永久船闸三闸首区闸室开挖诱发的岩体变形特征，提出了一种复杂岩体变形、应力及损伤状态的智能分析方法。分析过程中所涉及的岩体力学参数和本构模型利用现场监测到的位移进行智能识别，然后利用所确定的参数和模型，考虑动态施工和环境诱发岩体损伤的影响，对复杂岩体的变形、应力及损伤状态特征进行分析。结果表明，由智能计算得出的中隔墩顶面和两侧边坡直立墙的变形趋势与实测情况较吻合，而且开挖区表层附近出现较大区域的塑性区，直立墙和中隔墩的中上部出现拉应力区，直立墙底部拐角处出现压应力集中现象。

To the question of deformation, stress and damage behaviors of complex rockmass induced by excavation of shiplock rooms in the Three Gorges Project, a new method for analyzing deformation, stress and damage behaviors of complex rockmass is proposed. The monitoring displacement for key positions is used to recognize parameters and model. The recognized results are used to analyze deformation, stress and damage behaviors of complex rockmass in future. The results indicate that displacement change tendency of the isolated rockmass and straight walls of slope are consistent with the monitoring results. Tensile stress zone exists at top of the isolated rockmass and stand wall of slope.