Aqueduct structure and aqueduct underwater cutting method

The invention relates to the field of water conservancy facilities, in particular to an aqueduct structure and an aqueduct underwater cutting method. The aqueduct structure comprises an original aqueduct structure and a groove-shaped component, wherein an aqueduct is arranged on the groove-shaped component; the outer wrapping aqueduct body structure is arranged on the outer side of at least part of the original aqueduct structure; the cutting channel is arranged between the original aqueduct structure and the outer wrapping aqueduct body structure, an opening in one end of the cutting channel is located in the upper portion of one side of the original aqueduct structure, and an opening in the other end of the cutting channel is located in the upper portion of the other side of the original aqueduct structure. According to the aqueduct structure provided by the invention, a new aqueduct structure can be constructed in situ under the condition that water passing of the aqueduct is not interrupted, and in-situ r