An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method
Flowslides, as one type of landslides, are becoming a research hotspot due to their high speed and long runout distance, which can cause tremendous damage and economic loss. The scale of damage and deposit morphology of flowslide is closely related to factors like deposit volume, slope height, and s...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8844722 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849472804486905856 |
|---|---|
| author | Zhao Duan Yan-Bin Wu Hao Tang Jian-Quan Ma Xing-Hua Zhu |
| author_facet | Zhao Duan Yan-Bin Wu Hao Tang Jian-Quan Ma Xing-Hua Zhu |
| author_sort | Zhao Duan |
| collection | DOAJ |
| description | Flowslides, as one type of landslides, are becoming a research hotspot due to their high speed and long runout distance, which can cause tremendous damage and economic loss. The scale of damage and deposit morphology of flowslide is closely related to factors like deposit volume, slope height, and slope angle. In order to assess the influence of these factors, a sandbox apparatus is developed, and the Taguchi method is used to design an experimental scheme to analyze the results of factors affecting the deposit morphology of flowslide. The results show that the factor that has the greatest impact on flowslide deposit morphology is slope angle, followed by the influence of volume and slope height. As slope angle increases, the maximum width, maximum length, area, and length-width ratio of the deposit first increase and then decrease. In addition, there should be a critical angle in the changes of deposit morphology that is between 60° and 70° under the experimental conditions. When the volume is 5.4 × 10−3 m3, the slope angle is 70°, the slope height is 0.90 m, and the changes of deposit morphology of the flowslide are the largest. In this study, considering the slope angle as a single variable, there is a single upheaval for a slope angle of 40° and 50° and a double upheaval at 60° and 70°. The formation mechanism of the upheaval is analyzed based on the Mohr-Coulomb criterion and considered properties of the material. The apparent friction coefficient of a flowslide is spatially and lithologically different and increases nonlinearly as the slope angle increases. The initial benchmark of the slope angle and apparent friction coefficient curve are affected by the friction coefficient of the material; the position of the inflection point at which the curve increases rapidly is affected by the coefficient of velocity restitution. |
| format | Article |
| id | doaj-art-dad96f9143a04e2c9de15f6fa8e7fa2e |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-dad96f9143a04e2c9de15f6fa8e7fa2e2025-08-20T03:24:25ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88447228844722An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi MethodZhao Duan0Yan-Bin Wu1Hao Tang2Jian-Quan Ma3Xing-Hua Zhu4College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, ChinaCollege of Geological Engineering and Geomatics, Chang’an University, Xi’an 710064, ChinaFlowslides, as one type of landslides, are becoming a research hotspot due to their high speed and long runout distance, which can cause tremendous damage and economic loss. The scale of damage and deposit morphology of flowslide is closely related to factors like deposit volume, slope height, and slope angle. In order to assess the influence of these factors, a sandbox apparatus is developed, and the Taguchi method is used to design an experimental scheme to analyze the results of factors affecting the deposit morphology of flowslide. The results show that the factor that has the greatest impact on flowslide deposit morphology is slope angle, followed by the influence of volume and slope height. As slope angle increases, the maximum width, maximum length, area, and length-width ratio of the deposit first increase and then decrease. In addition, there should be a critical angle in the changes of deposit morphology that is between 60° and 70° under the experimental conditions. When the volume is 5.4 × 10−3 m3, the slope angle is 70°, the slope height is 0.90 m, and the changes of deposit morphology of the flowslide are the largest. In this study, considering the slope angle as a single variable, there is a single upheaval for a slope angle of 40° and 50° and a double upheaval at 60° and 70°. The formation mechanism of the upheaval is analyzed based on the Mohr-Coulomb criterion and considered properties of the material. The apparent friction coefficient of a flowslide is spatially and lithologically different and increases nonlinearly as the slope angle increases. The initial benchmark of the slope angle and apparent friction coefficient curve are affected by the friction coefficient of the material; the position of the inflection point at which the curve increases rapidly is affected by the coefficient of velocity restitution.http://dx.doi.org/10.1155/2020/8844722 |
| spellingShingle | Zhao Duan Yan-Bin Wu Hao Tang Jian-Quan Ma Xing-Hua Zhu An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method Advances in Civil Engineering |
| title | An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method |
| title_full | An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method |
| title_fullStr | An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method |
| title_full_unstemmed | An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method |
| title_short | An Analysis of Factors Affecting Flowslide Deposit Morphology Using Taguchi Method |
| title_sort | analysis of factors affecting flowslide deposit morphology using taguchi method |
| url | http://dx.doi.org/10.1155/2020/8844722 |
| work_keys_str_mv | AT zhaoduan ananalysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT yanbinwu ananalysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT haotang ananalysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT jianquanma ananalysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT xinghuazhu ananalysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT zhaoduan analysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT yanbinwu analysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT haotang analysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT jianquanma analysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod AT xinghuazhu analysisoffactorsaffectingflowslidedepositmorphologyusingtaguchimethod |