According to the actual situation of discharge culvert things, corrugated culvert. If a water inlet culvert sides of subgrade slope with the same oblique way, when you first install, install halfway up pipe segment, based on the length direction of the location of the outlet left import. Middle tube section all installed, proofreading in place after the installation of a water inlet is arranged on both sides of. Installation from one side of the emission of first root canal section, the tube core and foundation of longitudinal center line parallel, like the second tubes placed in position, when the two pipe flange distance between 3 adjacent 5cm crack, aiming screw hole on the flange with a small crowbar, the two pipe flange screw holes on the positive, then from the second section of the other end of the tube with crowbar to pry the pipe section, the longitudinal translation, the two flange spacing is about 2cm, and then all put on the screw, screw, belt buckle. From this later this form by section sequentially signatures, each culvert middle tube section has no Tsd, the heart can petition.

　　Because the present topography end by, sometimes between two adjacent flange spacing is smaller, then the scuttling about 1cm crack between the two flanges with a hammer and chisel, screwdriver to asbestos pad inserted between two flanges, pipe at the top of the two flange sometimes larger spacing, asbestos pad hard, tied with wire asbestos pad is fixed on the tie the screws, then workers begin to symmetric locking screw. Until from the outside to watch only 2 3mm crack can be between the two flanges.