Flexible slope protection for the steep Pisha sandstone slopes based on hydraulic polyurethane combined with planting mate
- 1Southeast University, School of Civil Engineering, School of Civil Engineering, China (ybzhao@seu.edu.cn)
- 2College of Civil Engineering & Mechanics, Xiangtan University, Xiangtan, China
- 3School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang , China
The vegetation and stability of Pisha sandstone slopes are insufficient due to its inherent properties, such as low erosion resistance, strength, water stability, and high porosity. In this paper, a new flexible slope protection method, which considers the combination of hydraulic polyurethane(W-OH) and planting mate technology, is proposed to realize the ecological restoration and prevent soil erosion of the steep Pisha sandstone slopes. The properties of consolidated body of W-OH and Pisha sandstone were investigated. Furthermore, the optimal proportion of the nutrient substate was obtained by orthogonal test via laboratory and on-site experiments. The results illustrate that with 5% W-OH, the average compressive strength and water stability index of the consolidated body can reach about 6.70 and 3.71 times higher than the blank group. The on-site experiments demonstrate that the vegetation coverage of the optimal group reaches 85% after three months curing, which is 5.2 times that of the blank group.
How to cite: Zhao, Y., Yang, C., Qu, F., Wu, Z., Liang, Z., and Ma, W.: Flexible slope protection for the steep Pisha sandstone slopes based on hydraulic polyurethane combined with planting mate, EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-16511, https://doi.org/10.5194/egusphere-egu2020-16511, 2020
