水土保持学报2025，Vol.39Issue(6)：49-56,8.DOI:10.13870/j.cnki.stbcxb.2025.06.004
碎石含量对三峡消落带波浪侵蚀的影响
Effects of Gravel Content on Wave Erosion in Three Gorges Reservoir Water-Level Fluctuation Zone
摘要
Abstract
[Objective]To clarify the effects of gravel content on wave erosion in the water-level fluctuation zone of the Three Gorges Reservoir area,so as to provide a theoretical basis for wave erosion control in water-level fluctuation zones.[Methods]A purple soil slope in the Three Gorges Reservoir area was used as the research object.Indoor scouring experiments were conducted to simulate wave erosion with four levels of gravel content(10%,20%,30%,and 40%)and three slope gradients(10°,20°,and 30°).Bare soil served as the control group(CK).Water turbidity,wave erosion rate,and pore water pressure were measured to clarify the influence of gravel content on wave erosion of the slope surface.[Results]1)With increasing wave scouring time,water turbidity showed a trend of first rising,then falling,and eventually stabilizing with fluctuations.Compared with the CK group,the turbidity values in the gravel content groups were reduced by 3.64%-25.93%.2)Wave erosion rate and pore water pressure decreased significantly with increasing gravel content.Compared with the CK group,the wave erosion rate decreased by 11.24%-42.85%,and pore water pressure decreased by 1.74%-30.47%.3)Correlation analysis indicated that wave erosion rate was extremely significantly positively correlated with water turbidity and pore water pressure(p<0.01),showed a insignificant positive correlation with slope gradient(p>0.05),and was extremely significantly negatively correlated with gravel content(p<0.01).[Conclusion]Gravel enhances the erosion resistance of slopes and dissipates wave energy by reducing the accumulation of pore water pressure and increasing surface roughness,thereby weakening the ability of waves to detach and transport soil particles and reducing wave erosion.关键词
碎石含量/孔隙水压力/波浪侵蚀/消落带Key words
gravel content/pore water pressure/wave erosion/water-level fluctuation zone分类
农业科技引用本文复制引用
肖海,杨瑞东,夏振尧,张伦,刘德玉,向瑞,刘子睿,丁瑜,刘琦..碎石含量对三峡消落带波浪侵蚀的影响[J].水土保持学报,2025,39(6):49-56,8.基金项目
国家自然科学基金项目(U21A2031) （U21A2031）
土木工程防灾减灾湖北省引智创新示范基地项目(2021EJD026) （2021EJD026）
