Deep foundation pit maintenance structure

The utility model relates to the technical field of deep foundation pit construction, and discloses a deep foundation pit maintenance structure which comprises a box body, an internal column is fixedly installed in the box body, an intercepting net is fixedly connected to the outer side of the internal column, a fixing column is fixedly connected to the outer side of the intercepting net, and a fixing column is fixedly connected to the outer side of the fixing column. A tail column is fixedly connected to the end, away from the inner column, of the intercepting net, buckles are fixedly installed on the rear side of the box body and the outer side of the tail column, bolts are inserted into the buckles on the rear side of the box body, and fixing structures are fixedly installed at the bottoms of the two sides of the box body. By arranging an L-shaped clamping block, a fixing column, an intercepting net, a tail column, a buckle, a plug pin, a foot pin, a spring and an L-shaped hole, when the structure works, t