| 城市岩质边坡生态防护机理及试验 |
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| 引用本文： | 蒋德松,蒋冲,赵明华.城市岩质边坡生态防护机理及试验[J].中南大学学报(自然科学版),2008,39(5). |
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| 作者姓名： | 蒋德松 蒋冲 赵明华 |
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| 作者单位： | 湖南大学,岩土工程研究所,湖南,长沙,410082 |
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| 摘 要： | 针对边坡生态防护工程特点,探讨城市岩质边坡的生态防护机理、植物与边坡的力学效应、植物根系加固边坡作用机理,并由此建立相应的力学模型,提出根系-土复合抗剪强度公式.研究植物对边坡降雨截留、径流延滞、土壤防渗、土层固结等效应,并探讨生态防护对边坡的抗冲刷机理.在此基础上,设计并完成城市岩质边坡生态防护室内模型试验,研究不同草种、不同坡度、不同固土方式等情况下的工作特性.将本文方法应用于某城市岩质边坡生态防护工程,获得百喜草、高羊茅和百慕达3种草在不同坡角(38(,48(和58()与固土结构(菱形铁丝网、土工格室、三维网垫)时的抗冲刷特性.研究结果表明:土工格室的固土效果最优,其次是三维网垫和菱形铁丝网;单位面积的冲刷强度存在一个临界角度值,为25(左右;百慕达的固土效果优于百喜草和高羊茅的固土效果.
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| 关 键 词： | 岩质边坡 生态防护 抗冲刷 |
Bio-engineering protection mechanism of city rock slope and its laboratory test |
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| JIANG De-song,JIANG Chong,ZHAO Ming-hua.Bio-engineering protection mechanism of city rock slope and its laboratory test[J].Journal of Central South University:Science and Technology,2008,39(5). |
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| Authors: | JIANG De-song JIANG Chong ZHAO Ming-hua |
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| Institution: | JIANG De-song,JIANG Chong,ZHAO Ming-hua(Institute of Geotechnical Engineering,Hunan University,Changsha 410082,China) |
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| Abstract: | Based on the features of rock slope bio-engineering protection,the ecology protection mechanism of the urban rock slope was discussed with the mechanics effect of plants and rock slope,and the reinforcement action mechanism of rock slope by plant root system was analyzed as well.Then,the corresponding mechanical model was proposed,from which the formula to calculate the increased shearing strength of the root system-earth compound body was derived.And the side slope rainfall interception,the runoff lagging,... |
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| Keywords: | rock slope bio-engineering protection anti-washout |
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