特拉锚垫防护下的库区土质岸坡水流侵蚀强度研究

Study on Water Erosion Intensity of Soil Slop in Reservoirs under Protection of Tela Anchor Pad

三峡库消落带水土流失严重,对航道通航、库岸稳定和生态环境造成明显不利影响,针对出现的问题,提出一种新型生态修复技术——特拉锚垫生态修复。作为一种新兴的护坡方式,特拉锚垫技术缺乏植被生长前的抗水流冲刷性能方面实验数据支撑,所以在室内进行了特拉锚垫护坡的冲刷模型试验。试验结果表明:水流流速小于1.7 m/s时,特拉锚垫的侵蚀强度较裸坡平均减少了91.5%,特拉锚垫的防护作用随流速的增加而增强。

The water and soil loss in the hydro-fluctuation belt of the Three Gorges Reservoir has serious adverse effects on the navigation of channel,the stability of reservoir bank and the ecological environment.In view of the problems arisen,this paper proposes a new ecological restoration technology,the Tela anchor pad ecological restoration technology.As an emerging method of slope protection,the Tela anchor pad technology lacks experimental data support in terms of resistance to water erosion before vegetation growth.Therefore,the scouring model test for the slope protection of Tela anchor pad was carried out indoors.The test results show that when the water flow velocity is less than 1.7 m/s,the erosion intensity of the Tela anchor pad is reduced by 91.5%on average compared with the bare slope.