| 谭水位,陈文学,吴一红,贺益英.柔性护坡袋抗冲性能试验研究[J].水利学报,2013,44(3): |
| 柔性护坡袋抗冲性能试验研究 |
| The experimental study on the sour velocity of the seeded sandbag system |
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| DOI： |
| 中文关键词: 柔性护坡袋 抗冲流速 生态护岸 |
| 英文关键词: seeded sandbag scour velocity ecological revetment |
| 基金项目: |
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| 中文摘要: |
| 柔性护坡材料是近些年来研制出来的一种新型护坡材料，其内填装不同粒径的土壤，有利于植物的生长，不仅被广泛用于地面绿化中，也应用于河湖的边坡护岸，为河湖水生动植物栖息环境创造良好的条件。本文在压力水槽中试验研究了柔性护坡袋的抗冲性能，分析了影响柔性护坡袋抗冲性能的影响因素和柔性护坡袋失稳的机理。研究表明，柔性护坡袋内土壤的级配是影响柔性护坡袋抗冲性能的重要因素，为提高柔性护坡袋的抗冲性能，土壤的级配可根据《水利水电工程土工合成材料应用技术规范（SL/T 225-98）》确定，当柔性护坡袋中土壤级配满足规范要求 |
| 英文摘要: |
| The seeded sandbag is a new kind of material for green retaining wall， which can be used not only in ground greening， but also in the riverside or shoreline because it is in favor of plant growth when the soil is filled in the seeded sandbag. The scour velocity of the seeded sandbag is studied in a pressure flume，and the factors affecting the scour velocity and the instability mechanism of the seeded sandbag system has been analyzed in this paper. The result shows that the soil gradation is the key factor affecting the scour velocity of the seeded sandbag，and the soil gradation can be selected according to“Standard for applications of geosynthetics in hydraulic and hydro-power engineering” for increasing the scour velocity. When the soil gradation meets the requirement of the Standard，the scour velocity can be as high as 4m/s. When the flow velocity is over 3.5m/s， the strength of the connection unit should be increased for increasing the stability of the seeded sandbag system. |
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