文章摘要
张文源,马永志,陈松,李树敏,韦经杰,林静.深圳坪山河组合式生态护坡的径流和污染物削减效益分析[J].广东水利水电,2018,(9):40-45
深圳坪山河组合式生态护坡的径流和污染物削减效益分析
Analysis on Runoff and Pollutant Reduction Benefit of Integrated Ecological Slope Protection in Pingshan River in Shenzhen
投稿时间:2018-06-19  最后修改时间:2018-07-03
DOI:
中文关键词: 生态护坡  径流削减  面源污染
英文关键词: ecological slope protection  surface flow reduction  non-point source pollution
基金项目:深圳市技术创新计划技术攻关项目,重20150117:城市水环境面源污染控制关键技术研发(编号:JSGG20150601170456182)。
作者单位
张文源 中建水务环保有限公司,北京 100071 
马永志 中建水务环保有限公司,北京 100071 
陈松 中建水务环保有限公司,北京 100071 
李树敏 中建水务环保有限公司,北京 100071 
韦经杰 中建水务环保有限公司,北京 100071 
林静 深圳市碧园环保技术有限公司,广东 深圳 518001 
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中文摘要:
      生态护坡作为一种坡面防护措施已经发展成为主要的河道驳岸整治方法,深圳坪山河采用“宾格石笼网箱+中空生态砌块+联锁砌块+植被修复”的组合式生态护坡方式,应对季节性水位涨落和冲刷,探究其对径流和污染物的削减效益有助于进一步优化结构形式,满足多重河道治理需求。通过SCS-CN径流模型分析典型降雨年时生态护坡的暴雨径流削减效益;采用人工模拟面源污染物冲刷实验的方法分析其对不同类型污染物的削减效益。结果表明:坪山河生态护坡对暴雨径流具有明显的削减效益,旱季和雨季分别达到70%和38%左右;宽10 m坡度15°左右的护坡设计对TP的削减率可以达到32%~52%,NH3-N的削减率可以达到37%~56%;大叶油草对于SS的削减作用十分显著。提高植物根系-土壤组合抗剪强度是生态护坡植被恢复的基本要求,改良土壤的结构应作为提高污染物去除效率的重要手段。
英文摘要:
      As a slope protection measure, ecological slope protection has developed into a major river revetment regulation method and also an important component of riverbank buffer zone. Shenzhen Pingshan River adopts “binge stone cage net box + hollow ecological block + interlock block + vegetation restoration combined” ecological slope protection method to deal with seasonal water level fluctuation and erosion. It is helpful to further optimize the structure form and meet the need of multi-channel management to explore the reduction benefit of runoff and pollutant. The efficiency of rainstorm runoff reduction by ecological protection slop in typical rainfall is analyzed through SCS-CN runoff model. And the reduction efficiency of different types of pollutants is measured by using artificial simulated surface pollutant experiment. The ecological protection slope of Pingshan River has obvious control effect on rainstorm runoff, which can reach about 70% and 38% in the dry season and the rainy season respectively. The reduction rate of TP and NH3-N can reach 32%~52% and 37%~56% when the slop at 10m wide and 15° slope. The control effect of Carpet grass on SS is very significant. It is a basic requirement of ecological protection slop to improve plant root-soil composite shear strength. Improving the removal efficiency of pollutants should be based on the improved soil structure.
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