Abstract
The slope is easy to lose its stability under rainfall scouring and infiltration after excavation, and soil improvement can effectively improve the erosion resistance of the slope. At present, there are few studies on the hydrodynamic characteristics of the improved slope under field conditions, which leads to insufficient research on the mechanism of soil and water conservation and ecological restoration of the slope by the improver, and is not conducive to the further promotion and application. In this paper, a new polymer composite material (ADNB) was used to carry out the field rainfall erosion test. By comparing the slope runoff velocity, average runoff depth, resistance coefficient, runoff shear stress and runoff power of the test slope and the natural slope, the enhancement effect of ADNB on the erosion resistance of slope was studied. Through long-term monitoring of soil physical properties and plant growth, the mechanism of ADNB to enhance soil erosion resistance is revealed. The results show that ADNB can effectively improve the compactness and air permeability of slope soil and reduce rainfall erosion. The germination time, germination rate, average height and coverage of plants can also be improved. In summary, ADNB can enhance the ecological self-repairing ability of slope by improving soil erosion resistance and promoting plant growth, and ultimately improve the stability of slope soil.
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Acknowledgements
This work is supported by Major Programs Special Funds of Applied Science and Technology Research and Development of Guangdong Province (No.2015B090925016); The National Key Research and Development Project of China (No.2017YFC1501201); The National Key Research and Development Project of China (No.2017YFC0804605).
Funding
This study was funded by Applied Science and Technology Research and Development of Guangdong Province (No.2015B090925016); The National Key Research and Development Project of China (No.2017YFC1501201); The National Key Research and Development Project of China (No.2017YFC0804605).
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Huang, W., Du, J., Lai, H. et al. Soil and water conservation and ecological restoration on the slopes treated with new polymer composite materials. Environ Earth Sci 81, 448 (2022). https://doi.org/10.1007/s12665-022-10574-8
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DOI: https://doi.org/10.1007/s12665-022-10574-8