Stability Control Technology for Meizizhou Air Shaft During Process Conversion

The excavation of the air shaft from underwater to the passage of a shield machine, and then to the drainage of groundwater and the breaking of plain concrete, requires a complex process of transformation. During this process, the air shaft will withstand complex and variable loads. This has a significant impact on the safety of the air shaft structure, such as the possibility of water inrush during the pressure relief process transition from water pressure to no water pressure in the foundation pit, which can cause significant deformation of the working shaft and result in the instability of the working shaft. During the process of the shield tunneling machine breaking the well, if the soil in front of the shield is not reinforced enough, it will lead to dangerous situations such as water gushing, sand gushing, and surface collapse.