Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake
The Iwate-Miyagi Nairiku Earthquake (M7.2) that occurred on June 14, 2008, caused a slope failure in Dozo-zawa River near the summit of Mt. Higashi-Kurikoma. The debris flow caused by the slope failure flowed for about 10 km and took the lives of 7 people. The mechanisms of the slope failure and lon...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2023-01-01
|
| Series: | E3S Web of Conferences |
| Online Access: | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/52/e3sconf_dfhm82023_01009.pdf |
| _version_ | 1797740250174324736 |
|---|---|
| author | Hashimoto Hiroyuki Sato Itsuki Kuwano Reiko |
| author_facet | Hashimoto Hiroyuki Sato Itsuki Kuwano Reiko |
| author_sort | Hashimoto Hiroyuki |
| collection | DOAJ |
| description | The Iwate-Miyagi Nairiku Earthquake (M7.2) that occurred on June 14, 2008, caused a slope failure in Dozo-zawa River near the summit of Mt. Higashi-Kurikoma. The debris flow caused by the slope failure flowed for about 10 km and took the lives of 7 people. The mechanisms of the slope failure and long-distance debris flow have not yet been well understood. In this study, a series of triaxial compression tests was conducted using a highly crushable pumice soil collected from the collapsed area, and shear behavior and particle breakage were discussed. Both reconstituted specimens and intact specimens showed contractancy and reached critical states that implies high flow potential. However, intact specimens preserved looser structure during consolidation and showed stronger contractancy during shearing than the reconstituted specimens, due to their natural soil structure. Significant particle breakage was observed in the tests with reconstituted specimens. |
| first_indexed | 2024-03-12T14:09:45Z |
| format | Article |
| id | doaj.art-817ec7f78b394dd4bbdf75943ccdb8a7 |
| institution | Directory Open Access Journal |
| issn | 2267-1242 |
| language | English |
| last_indexed | 2024-03-12T14:09:45Z |
| publishDate | 2023-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | E3S Web of Conferences |
| spelling | doaj.art-817ec7f78b394dd4bbdf75943ccdb8a72023-08-21T09:02:29ZengEDP SciencesE3S Web of Conferences2267-12422023-01-014150100910.1051/e3sconf/202341501009e3sconf_dfhm82023_01009Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku EarthquakeHashimoto Hiroyuki0Sato Itsuki1Kuwano Reiko2The University of Tokyo, Department of civil engineeringPort and Airport Research Institute, Geotechnical Engineering DepartmentThe University of Tokyo, Institute of Industrial ScienceThe Iwate-Miyagi Nairiku Earthquake (M7.2) that occurred on June 14, 2008, caused a slope failure in Dozo-zawa River near the summit of Mt. Higashi-Kurikoma. The debris flow caused by the slope failure flowed for about 10 km and took the lives of 7 people. The mechanisms of the slope failure and long-distance debris flow have not yet been well understood. In this study, a series of triaxial compression tests was conducted using a highly crushable pumice soil collected from the collapsed area, and shear behavior and particle breakage were discussed. Both reconstituted specimens and intact specimens showed contractancy and reached critical states that implies high flow potential. However, intact specimens preserved looser structure during consolidation and showed stronger contractancy during shearing than the reconstituted specimens, due to their natural soil structure. Significant particle breakage was observed in the tests with reconstituted specimens.https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/52/e3sconf_dfhm82023_01009.pdf |
| spellingShingle | Hashimoto Hiroyuki Sato Itsuki Kuwano Reiko Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake E3S Web of Conferences |
| title | Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake |
| title_full | Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake |
| title_fullStr | Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake |
| title_full_unstemmed | Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake |
| title_short | Critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 Iwate-Miyagi Nairiku Earthquake |
| title_sort | critical states observed in triaxial compression tests on volcanic pumice soil related to debris flow in the 2008 iwate miyagi nairiku earthquake |
| url | https://www.e3s-conferences.org/articles/e3sconf/pdf/2023/52/e3sconf_dfhm82023_01009.pdf |
| work_keys_str_mv | AT hashimotohiroyuki criticalstatesobservedintriaxialcompressiontestsonvolcanicpumicesoilrelatedtodebrisflowinthe2008iwatemiyaginairikuearthquake AT satoitsuki criticalstatesobservedintriaxialcompressiontestsonvolcanicpumicesoilrelatedtodebrisflowinthe2008iwatemiyaginairikuearthquake AT kuwanoreiko criticalstatesobservedintriaxialcompressiontestsonvolcanicpumicesoilrelatedtodebrisflowinthe2008iwatemiyaginairikuearthquake |