Based on Nanjing Hexi road network soft ground control project

the depth distribution of soft ground

the set-up depth of drainage board and sinkage rule of this area were analyzed.Field monitoring and analysis of road network soft ground settlement treated by vacuum preloading method were carried out.The surface settlement

layered settlement

soil lateral displacement

pore water pressure and the ground water table were measured.The effects and assessment of regional road network soft ground settlement treatment by vacuum preloading method were summarized.The results show that the thickness of soft ground of Nanjing Hexi road network is between 8-12 m

the settlement of soft ground treated by vacuum preloading method in construction period is between 35-42 cm.The research results may provide reference for construction quality control of similar soft ground engineering treated by vacuum preloading method.