2008.4-2009.3 Yearbook of NILIM
Research Summary
Water Quality Control Department
| Reference Number | Y080201 |
| Title | Research on appropriate sewer management |
| Start-End Date | 2006.4-2009.3 |
| Division | Wastewater System Division |
| Author | Head,Takashi SAKAKIBARA Senior Researcher, Yosuke MATSUMIYA Researcher,Wataru FUKATANI Researcher,Yasuo FUKUDA Guest Research Engineer, Yoshihide NISHIO |
| Summary | Japan has invested heavily for the expansion of sewer network since the 1960's. Although entire network installation has not completed, aging problems are appearing for the early laid sewers. As a result, annual road cave-in caused by sewer reached to more than 4,000 cases in recent years. Our research developed the methodology for appropriate sewer management by analyzing characteristics of sewer failure. |