【摘要】 云南大保高速公路四角田隧道地处峡谷地带,工程地质条件比较复杂,且地表水丰富。结合四角田隧道的工程实况,利用Drucker-Prager屈服准则,运用有限元法对该隧道进行三维非线性有限元模拟分析,以评价其整体稳定性。根据计算分析结果,指出了隧道的相对危险区域,确定了实地重点监测的范围,同时对同类工程也具有一定的指导意义。更多还原

【Abstract】 The Sijiaotian Tunnel in Yunnan Dabao Highway lies in the narrow defile landscape,and the engineering geology condition is complex,with plenty of cienega.According to the actual situation of the Sijiaotian Tunnel Project in Yunnan Dabao Highway,the stability of the surrounding rock mass is studied by using a 3-D non-linear FEM.The Drucker-Prager criterion is chosen as the failure criterion of the rock.The relatively dangerous zone and the monitoring points in the tunnel are determined.The numerical results show that the Sijiaotian Tunnel is relatively stable.The conclusion has some significance for guiding the construction of similar projects.更多还原