Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading
Intense vibration affects the pore water pressure in a tailing dam, with the tendency to induce dam liquefaction. In this study, experiments were performed wherein model tailing dams were completely liquefied by sustained horizontal dynamic loading to determine the effects of the vibration frequency...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2018-01-01
|
| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2018/1921057 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832550264526077952 |
|---|---|
| author | Jia-xu Jin Hong-zhi Cui Li Liang Shi-wang Li Ping-yi Zhang |
| author_facet | Jia-xu Jin Hong-zhi Cui Li Liang Shi-wang Li Ping-yi Zhang |
| author_sort | Jia-xu Jin |
| collection | DOAJ |
| description | Intense vibration affects the pore water pressure in a tailing dam, with the tendency to induce dam liquefaction. In this study, experiments were performed wherein model tailing dams were completely liquefied by sustained horizontal dynamic loading to determine the effects of the vibration frequency, vibration amplitude, and tailing density on the pore water pressure. The results revealed four stages in the increase of the tailing pore water pressure under dynamic loading, namely, a slow increase, a rapid increase, inducement of structural failure, and inducement of complete liquefaction. A lower frequency and smaller amplitude of the vibration were found to increase the time required to achieve a given pore water pressure in dense tailings. Under the effect of these three factors—vibration frequency and amplitude and tailing density—the tailing liquefaction time varied nonlinearly with the height from the base of the tailing dam, with an initial decrease followed by an increase. The pore pressure that induced structural failure also gradually decreased with increasing height. The increase in the tailing pore pressure could be described by an S-shaped model. A complementary multivariate nonlinear equation was also derived for predicting the tailing pore water pressure under dynamic loading. |
| format | Article |
| id | doaj-art-2da54ac2ea1846ff93d1bb599ea159c1 |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-2da54ac2ea1846ff93d1bb599ea159c12025-02-03T06:07:10ZengWileyShock and Vibration1070-96221875-92032018-01-01201810.1155/2018/19210571921057Variation of Pore Water Pressure in Tailing Sand under Dynamic LoadingJia-xu Jin0Hong-zhi Cui1Li Liang2Shi-wang Li3Ping-yi Zhang4College of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning Province 123000, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning Province 123000, ChinaSchool of Resource & Civil Engineering, Northeastern University, Shenyang, Liaoning Province 110819, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning Province 123000, ChinaCollege of Civil Engineering, Liaoning Technical University, Fuxin, Liaoning Province 123000, ChinaIntense vibration affects the pore water pressure in a tailing dam, with the tendency to induce dam liquefaction. In this study, experiments were performed wherein model tailing dams were completely liquefied by sustained horizontal dynamic loading to determine the effects of the vibration frequency, vibration amplitude, and tailing density on the pore water pressure. The results revealed four stages in the increase of the tailing pore water pressure under dynamic loading, namely, a slow increase, a rapid increase, inducement of structural failure, and inducement of complete liquefaction. A lower frequency and smaller amplitude of the vibration were found to increase the time required to achieve a given pore water pressure in dense tailings. Under the effect of these three factors—vibration frequency and amplitude and tailing density—the tailing liquefaction time varied nonlinearly with the height from the base of the tailing dam, with an initial decrease followed by an increase. The pore pressure that induced structural failure also gradually decreased with increasing height. The increase in the tailing pore pressure could be described by an S-shaped model. A complementary multivariate nonlinear equation was also derived for predicting the tailing pore water pressure under dynamic loading.http://dx.doi.org/10.1155/2018/1921057 |
| spellingShingle | Jia-xu Jin Hong-zhi Cui Li Liang Shi-wang Li Ping-yi Zhang Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading Shock and Vibration |
| title | Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading |
| title_full | Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading |
| title_fullStr | Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading |
| title_full_unstemmed | Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading |
| title_short | Variation of Pore Water Pressure in Tailing Sand under Dynamic Loading |
| title_sort | variation of pore water pressure in tailing sand under dynamic loading |
| url | http://dx.doi.org/10.1155/2018/1921057 |
| work_keys_str_mv | AT jiaxujin variationofporewaterpressureintailingsandunderdynamicloading AT hongzhicui variationofporewaterpressureintailingsandunderdynamicloading AT liliang variationofporewaterpressureintailingsandunderdynamicloading AT shiwangli variationofporewaterpressureintailingsandunderdynamicloading AT pingyizhang variationofporewaterpressureintailingsandunderdynamicloading |