2010 Fiscal Year Final Research Report
Study on the loosening mechanism of the ground due to aging of sewerage pipes and its countermeasure methods
| Project/Area Number |
20360213
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Geotechnical engineering
|
|---|
| Research Institution | Kumamoto University |
|---|
Principal Investigator |
OTANI Jun Kumamoto University, 大学院・自然科学研究科, 教授 (30203821)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
OBARA Yuzo 熊本大学, 大学院・自然科学研究科, 教授 (50135315)
MUKUNOKI Toshifumi 熊本大学, 大学院・自然科学研究科, 准教授 (30423651)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 地盤工学 / X線CT / 下水管渠 / 地盤防災 / 対策工 |
|---|
| Research Abstract |
It has been reported that the roadway surface locally subsides due to settlement in a base course. In most cases, a sewerage pipe exists underneath the subsidence part. In order to understand significant factor on local subsidence at road surface, model test was performed to generate a cavity in the model ground. Water was supplied into each model ground by Toyoura sand from the defect part with a same hydraulic head and soil was drained from the same defect part, which is created on the bottom of model ground. An industrial X-ray computed tomography (CT) scanner was used to scan the condition in the model ground at each step of water supply-drainage cycles ; the cavity generation in the model ground was observed 3-dimensionally. The analysis of CT image evaluated the range of loosening area, visually and quantitatively.
|
Research Products
(19 results)
