Method for realizing balanced arrival of shield machine

The invention relates to a method for realizing balanced arrival of a shield machine. The method comprises the following steps: setting a shield arrival well with closed periphery at an arrival end; backfilling the closed shield arrival well before the arrival of the shield machine, wherein firstly backfilling sands into the shield arrival well till the sands position is above a shield cylinder body, further pouring plain concrete at the top part of the backfilled sand, and finally pouring water into a foundation pit; adopting glass fiber ribs to replace steel bars in the range of a tunnel portal of an enclosure structure of the shield arrival well; using the shield machine to directly cut the tunnel portal, and entering into the arrival well by excavation; carrying out reinforced slurry injection construction at the tunnel portal after the shield machine arrives at the hoisting position; and carrying out sealing and waterproof treatment on the tunnel portal, carrying out water pumping and sand cleaning on the foundation pit and then hoisting the shield machine out of the well. In the invention, the method of using the shield machine to directly cut the tunnel portal is utilized for arriving excavation, and the shield arrival well is backfilled before the arrival, thus the tunnel portal is not required to chip off, a water stopping device is not required to install, and the water and soil pressure balance inside and outside the arrival well can be further ensured.