Reinforcing and supporting structure for transverse channel of existing tunnel through shield under-crossing

The utility model relates to the field of tunnel supporting, in particular to a reinforcing and supporting structure for a transverse channel of an existing tunnel through shield underneath pass, which comprises a reinforcing and supporting structure body, a supporting structure is arranged on the upper portion of the reinforcing and supporting structure body, and the supporting structure comprises a first supporting steel plate, a first telescopic rod, a first supporting pier and a fixing bolt. The bottom of the first supporting steel plate is connected with a first telescopic rod, the bottom of the first telescopic rod is connected with a first supporting pier, and an inclined rod is arranged in the first supporting steel plate. According to the shield tunnel reinforcing and supporting structure, the supporting structure, the first supporting assembly and the second supporting assembly are arranged in a shield tunnel to form an overall stress system, the overall stress system is matched with a shield lining