Leakage detection device and method for internally retained water from areas controlled by impermeable walls, and leak repair method

摘要

PPROBLEM TO BE SOLVED: To suggest a method for economically and surely detecting leakage of internally held water from an area controlled with an impervious wall, and specifying and repairing a leaking part, if a leakage occurs. PSOLUTION: This leakage detector detects leakage of the internally held water in the controlled area 1 controlled with the impervious wall 2 composed of two or more wall members (outer wall 2a, inner wall 2b) out of impermeable material having coupling sections. In the external surface on the side opposite to the controlled area 1 of the inner wall 2b, monitoring pipes 5 which have apertures at predetermined vertical intervals, and are used for monitoring the quality of water in each pipe, are arranged at arbitrary horizontal intervals. Leakage of the internally held water is detected by monitoring the quality of water inside each monitoring pipe 5. PCOPYRIGHT: (C)2004,JPO