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A platform for research: civil engineering, architecture and urbanism
Investigation of Slope Protection Using Vegetation: A Case Study in Ninh Thuan Province, Vietnam
This study investigates slope protection using vegetation in the area of soil with high disintegration characteristics. The investigated site was a downstream slope (1:2.5) of a dam at the Song Trau lake, Thuan Bac district, Ninh Thuan province. A grass seed mat was employed to cover the slope surface, which could help to activate the development of grass. Eroded soil and the developing height of grass were recorded during watering time with the volume of water, which was calculated from precipitation conditions at the site. In addition, three small-scale flumes (0.5 × 0.5 × 1.5 m) were made to cultivate grass with different slope angles (1:1, 1:1.5, and 1:2.5) using the same grass seed mat. The erosing rainfall intensity was employed at 50 mm/2 h, 80 mm/2 h, 100 mm/2 h, and 150 mm/2 h. Results showed that the eroded soil weight after using the grass seed mat reduced 8 times as much as that before using the mat. The developing rate of grass in the site was the same as in the flumes, which was 1 cm/day in average. Finally, the soil strength was increased after the development of grass. In particular, cohesion and friction angle of soil were increased to 56% and 43%, respectively.
Investigation of Slope Protection Using Vegetation: A Case Study in Ninh Thuan Province, Vietnam
This study investigates slope protection using vegetation in the area of soil with high disintegration characteristics. The investigated site was a downstream slope (1:2.5) of a dam at the Song Trau lake, Thuan Bac district, Ninh Thuan province. A grass seed mat was employed to cover the slope surface, which could help to activate the development of grass. Eroded soil and the developing height of grass were recorded during watering time with the volume of water, which was calculated from precipitation conditions at the site. In addition, three small-scale flumes (0.5 × 0.5 × 1.5 m) were made to cultivate grass with different slope angles (1:1, 1:1.5, and 1:2.5) using the same grass seed mat. The erosing rainfall intensity was employed at 50 mm/2 h, 80 mm/2 h, 100 mm/2 h, and 150 mm/2 h. Results showed that the eroded soil weight after using the grass seed mat reduced 8 times as much as that before using the mat. The developing rate of grass in the site was the same as in the flumes, which was 1 cm/day in average. Finally, the soil strength was increased after the development of grass. In particular, cohesion and friction angle of soil were increased to 56% and 43%, respectively.
Investigation of Slope Protection Using Vegetation: A Case Study in Ninh Thuan Province, Vietnam
Lecture Notes in Civil Engineering
Nguyen-Xuan, Tung (editor) / Nguyen-Viet, Thanh (editor) / Bui-Tien, Thanh (editor) / Nguyen-Quang, Tuan (editor) / De Roeck, Guido (editor) / Do, Tuan-Nghia (author) / Nguyen, Lan Chau (author)
International Conference on Sustainability in Civil Engineering ; 2022 ; Hanoi, Vietnam
Proceedings of the 4th International Conference on Sustainability in Civil Engineering ; Chapter: 41 ; 417-426
2023-08-13
10 pages
Article/Chapter (Book)
Electronic Resource
English
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