Methode for placing a conduit of pipes in the ground by pushing and pipe for use in such a method

摘要

A process for laying a prepressed pipeline and pipe advantageously employed therein are described. Concrete pipe sections have an inner lining of a polymeric material anchored by flexible projections to the inner surface of the pipe. The thickness of the lining is increased at the ends of the pipe to form an elongated sealing surface and a stress absorbing region. A compression seal may thereby be employed. Stresses created by the seal are absorbed both by the thickened region and by a shoulder formed in the concrete wall of the pipe. In use, compression is maintained as the result of friction between the pipe well and the surrounding earth.