Abstract: The resource utilization of waste soil in shield tunneling has numerous disadvantages, including a large scale of equipment, complicated operation, and poor adaptability to different soils and small areas. In this study, the treatment process for the resource utilization and an intelligent, integrated, and modularized equipment of vibration screening, flocculation, pressure filtration, pipeline, and centralized control platform are investigated on the basis of a shield tunnel project of Liuyue North station of Shenzhen metro line 14. The results indicate the following: (1) The equipment used in the Liuyue North station occupies only 470 m2, the processing capacity reaches 1 400 m3 per day, and only four operators are needed. (2) The adaptability of the equipment to different strata is significantly improved, and the screen clogging issue is resolved. (3) The mud and water contents of coarse aggregate/fine sand are significantly reduced. The treatment system for the resource usage of waste soil in shield tunneling is evolving toward intelligence, integration, and modularization, which is appropriate for various scenarios.

Key words: waste soil in shield tunneling, resource utilization, intelligence, integration, modularization, treatment process, treatment equipment