Discussion on Prevention and Control of Sliding Instability of Half-Filled and Half-Dug Roadbed in Mountainous Area
In mountainous areas with a lot of rain,the half-filled and half-dug roadbed is prone to slope instability,causing great harm to the stability of the roadbed.In order to avoid the instability disaster of the half-filled and half-dug roadbed in mountainous areas under rainy conditions,this paper takes a half-filled and half-dug slope at G312 National Road in Guyuan,Ningxia as an example,and calculates the stability of the slope through the survey results.The safety and stability coefficients are 0.98 and 0.96 respectively,which are in an unstable state.The de-formation characteristics are analyzed and verified in detail,and it is concluded that under the condition of half-filled and half-dug terrain,the characteristics of rock and soil mass and rainfall are the main factors leading to the instability and collapse of the half-filled and half-dug roadbed slope.According to such landslides,this paper puts forward engineering measures combining micro-steel pipe pile,retaining wall,drainage and grass planting for dis-posal,and suggests that the half-filled and half-dug roadbed should adopt a block permeable roadbed and do a good job in the design of the survey and drainage in order to provide technical reference for similar engineering problems in the region.
half-filled and half-dug subgradedeformation characteristicsmajor factorsengineering measures
万方数据
维普
