Study on Treatment Technology of Rock Slope Landslide of an Expressway in Guizhou

Abstract A highway deep cutting slope is in Guizhou province, with a total length of about 258m and maximum excavation height 49.96m. after continuous heavy rainfall, groundwater seeped out on the slope, cracks appeared. Based calculation engineering experience, was reinforced by anchor ropes anti-slide piles. After treatment, deformation monitored GNSS displacement monitors, results monitoring show that three points No.1, No.2 No.3 are relatively stable, daily accumulated horizontal point No.4 large, reaching 400mm March 17th, but change rate tends to slow down gradually.