Open cut structure and method for sinking to pass through current channel

The invention discloses an open excavation structure and method for sinking to pass through a current trench, and the method comprises the steps: determining an implementation line of a newly-built trench, and determining a first preset position of a first temporary support wall and a second preset position of a second temporary support wall according to the excavation range of the newly-built trench; vertically excavating a soil body at a first preset position, and fully filling and excavating to the bottom of the current structure to form a first temporary support wall; after the strength of the first temporary supporting wall is stable, the soil body at the second preset position is vertically excavated, the excavation range is fully filled to the bottom of the current structure, and a second temporary supporting wall is formed; after the strength of the second temporary supporting wall is stable, the first temporary supporting wall and the second temporary supporting wall serve as bearing foundations of t