Experimental study on slope sliding and debris flow evolution with and without barrier
A constitutive model on the evolution of debris flow with and without a barrier was established based on the theory of the Bingham model. A certain area of the Laoshan Mountain in Nanjing, Jiangsu Province, in China was chosen for experimental study, and the slope sliding and debris flow detection s...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2015-01-01
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| Series: | Water Science and Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1674237015000046 |
| _version_ | 1818216543475990528 |
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| author | Ji-kun Zhao Dan Wang Jia-hong Chen |
| author_facet | Ji-kun Zhao Dan Wang Jia-hong Chen |
| author_sort | Ji-kun Zhao |
| collection | DOAJ |
| description | A constitutive model on the evolution of debris flow with and without a barrier was established based on the theory of the Bingham model. A certain area of the Laoshan Mountain in Nanjing, Jiangsu Province, in China was chosen for experimental study, and the slope sliding and debris flow detection system was utilized. The change curve of the soil moisture content was attained, demonstrating that the moisture content of the shallow soil layer increases faster than that of the deep soil layer, and that the growth rate of the soil moisture content of the steep slope is large under the first weak rainfall, and that of the gentle slope is significantly affected by the second heavy rainfall. For the steep slope, slope sliding first occurs on the upper slope surface under heavy rainfall and further develops along the top platform and lower slope surface, while under weak rainfall the soil moisture content at the lower part of the slope first increases because of the high runoff velocity, meaning that failure occurring there is more serious. When a barrier was placed at a high position on a slope, debris flow was separated and distributed early and had less ability to carry solids, and the variation of the greatest depth of erosion pits on soil slopes was not significant. |
| first_indexed | 2024-12-12T06:53:39Z |
| format | Article |
| id | doaj.art-760e7e86008243bba7ae080329b8d3b5 |
| institution | Directory Open Access Journal |
| issn | 1674-2370 |
| language | English |
| last_indexed | 2024-12-12T06:53:39Z |
| publishDate | 2015-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Water Science and Engineering |
| spelling | doaj.art-760e7e86008243bba7ae080329b8d3b52022-12-22T00:34:00ZengElsevierWater Science and Engineering1674-23702015-01-0181687710.1016/j.wse.2015.01.003Experimental study on slope sliding and debris flow evolution with and without barrierJi-kun Zhao0Dan Wang1Jia-hong Chen2College of Engineering, Nanjing Agricultural University, Nanjing 210031, PR ChinaCollege of Engineering, Nanjing Agricultural University, Nanjing 210031, PR ChinaCollege of Civil Engineering, Tongji University, Shanghai 201804, PR ChinaA constitutive model on the evolution of debris flow with and without a barrier was established based on the theory of the Bingham model. A certain area of the Laoshan Mountain in Nanjing, Jiangsu Province, in China was chosen for experimental study, and the slope sliding and debris flow detection system was utilized. The change curve of the soil moisture content was attained, demonstrating that the moisture content of the shallow soil layer increases faster than that of the deep soil layer, and that the growth rate of the soil moisture content of the steep slope is large under the first weak rainfall, and that of the gentle slope is significantly affected by the second heavy rainfall. For the steep slope, slope sliding first occurs on the upper slope surface under heavy rainfall and further develops along the top platform and lower slope surface, while under weak rainfall the soil moisture content at the lower part of the slope first increases because of the high runoff velocity, meaning that failure occurring there is more serious. When a barrier was placed at a high position on a slope, debris flow was separated and distributed early and had less ability to carry solids, and the variation of the greatest depth of erosion pits on soil slopes was not significant.http://www.sciencedirect.com/science/article/pii/S1674237015000046Debris flowSlope slidingGeological disasterTime domain reflectometry (TDR) techniqueDetection systemConstitutive model |
| spellingShingle | Ji-kun Zhao Dan Wang Jia-hong Chen Experimental study on slope sliding and debris flow evolution with and without barrier Water Science and Engineering Debris flow Slope sliding Geological disaster Time domain reflectometry (TDR) technique Detection system Constitutive model |
| title | Experimental study on slope sliding and debris flow evolution with and without barrier |
| title_full | Experimental study on slope sliding and debris flow evolution with and without barrier |
| title_fullStr | Experimental study on slope sliding and debris flow evolution with and without barrier |
| title_full_unstemmed | Experimental study on slope sliding and debris flow evolution with and without barrier |
| title_short | Experimental study on slope sliding and debris flow evolution with and without barrier |
| title_sort | experimental study on slope sliding and debris flow evolution with and without barrier |
| topic | Debris flow Slope sliding Geological disaster Time domain reflectometry (TDR) technique Detection system Constitutive model |
| url | http://www.sciencedirect.com/science/article/pii/S1674237015000046 |
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