Stability Evaluation Of Zhongfangcun Slope Of Shaoguang Expressway In Fujian Province

With the need of social and economic development,the expressway is widely built as a passage connecting the local economy.With the gradual construction of the expressway to the economically underdeveloped areas,more and more artificial slopes emerge as the times require.The research on the stability of highway slope is helpful to ensure the economic development of the place along the highway,to protect the owner of the highway,to ensure the full application of the cost of building the highway,and to prevent the loss of personnel and property caused by the slope instability.Shaoguang Expressway,as a highway built in Nanping,the poorest mountain city in Fujian Province,is a branch road project of Beijing-Taiwan Expressway.Shaoguang Expressway,as the only expressway in the poor mountain area of Nanping City,is the basic guarantee for poverty alleviation in this poor area,while Shaowu to Guangze Expressway is K28 450-K280 The 650 section slope is located in the middle section of Shaoguang Expressway,near Zhongfang Village.Based on the field engineering investigation of Zhongfang Village slope,the stability coefficient of three sections of Zhongfang Village slope under rainstorm and natural condition is calculated by using Lizheng landslide software.According to the Moore Coulomb criterion,the mechanical parameters of rock and soil are modified,and then the Swedish strip method of limit equilibrium and the simplified Bishop method are used to calculate the stability coefficient of the three most vulnerable sections of the slope under rainstorm and natural conditions.By using Flac3D numerical simulation software,the main stress distribution map,shear stress distribution map and shear stress distribution map of slope under normal working condition,rainstorm condition and earthquake condition are obtained Safety coefficient diagram after reduction.According to the Flac3D software,the safety factor of slope under the above three working conditions is simulated.Finally,it is concluded that the treated slope can meet the safety factor required in the Building Slope Engineering Code under three working conditions.