Connection structure of the water piping system of the T-shaped pipe replacement method and new T-shaped tube

摘要

PPROBLEM TO BE SOLVED: To practice the restoration work of a water leakage trouble advantageously at cost and schedule of its construction by taking advantage of a valve room provided at a given position in the water piping system, even under a condition in which the vicinity containing the water leakage site of a buried water pipe cannot be excavated. PSOLUTION: A T-pipe replacing method includes operation processes of: forming, in an upper portion of the valve room built in the surrounding area of an existing T-pipe P with a diameter for enabling persons to work therein, a working opening through which the removal of the existing T-pipe and the installation of a T-pipe to be newly-installed are possible; removing the existing T-pipe coupled between both adjacent buried water pipes inside the valve room; bringing in the T-pipe A to be newly-installed, which includes a protruded pipe section with a diameter for enabling persons to work therein, through the working opening between both the adjacent buried water pipes P; coupling the T-pipe A to be newly installed between both the buried water pipes, and coupling both the ends of the T-pipe A to be newly-installed and ends of both the buried water pipes P, water-tightly together. PCOPYRIGHT: (C)2011,JPO&INPIT