膨胀土隧道变形破坏的数值模拟

摘要

Based on index of the tunnel geological conditions and physical and mechanical parameters of expansive soil,discrete element analysis software UDEC(Universal District Element Code)is adopted and a mathematical model is established to simulate deformation process of sur-rounding rock. Regarding results of numerical simulation,suggestions and corresponding control measures for construction and surrounding rock instability and failure are put forward.%依据隧道地质条件及膨胀土的物理力学参数指标，采用离散元分析计算软件 UDEC（Universal District Element Code），建立了数值计算模型，对围岩的变形过程进行了数值模拟，根据数值模拟结果，提出了相应的施工建议和围岩失稳破坏的治理措施。