Metro segment who easily installs

The utility model provides a metro segment who easily installs relates to underground works and builds technical field, and it includes the section of jurisdiction base member, the section of jurisdiction base member lies in its four weeks edges and is equipped with the recess, just section of jurisdiction matrix phase is to both sides the recess symmetry sets up, is located the section of jurisdiction base member one of them to adjacent both sides be equipped with the locating piece that to dismantle the connection in the recess, just the locating piece outwards stretches out the recess setsup, and the recess internal fixation sets up the locating piece on one side of wherein before two adjacent section of jurisdiction base members of installation to advancing line location to the section of jurisdiction base member of adjacent both sides through the locating piece, thereby having guaranteed when installing, the section of jurisdiction base member of adjacent both sides mutually supporting between through lo