Investigations and Treatment on Deformation of a Large Slope in a Karst Region

Slope treatment is an inevitable problem in engineering construction in karst regions. Take a large slope project on the karst stratum in Shenzhen as an example, the investigation and treatment measures for the large slope were introduced from the engineering background, potential factors of slope instability, monitored data of the project, rescue and reinforcement, which involved that: 1) the monitoring and warning of the slope, and emergency treatment measures; 2) potential effects of the hydrogeological condition characteristics of the region on slope instability; 3) the analysis for force-deformation characteristics of pile-anchor support structure based on long-term monitoring data. Eventually, the application of “grouting with sleeve valve pipes combined deep drainage with deep drainage holes, anti-slip piles, and retaining system reinforcement with supporting beams” in the slope reinforcement was introduced.