Research progress on ecological restoration technology of vegetation concrete
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摘要:
生态护坡能有效减少工程建设所带来的一系列地质环境问题,如水土流失、山体滑坡等,作为常用生态护坡技术之一的植被混凝土生态修复技术经过不断的研究与应用已趋于成熟。阐述了植被混凝土生态修复技术的修复理论依据与技术研发历程;从基材配比、物种选择、施工工艺等方面介绍了植被混凝土生态修复技术的主要内容并阐述了技术优势;概述了植被混凝土生态修复技术的研究体系,从生境基材的物理、化学、微生物特性研究和护坡植物研究4个方面总结了技术的研究进展;最后分析了植被混凝土生态修复技术的待改进之处,并从施工工艺、养护措施和土壤改良等方面对植被混凝土生态修复技术的研究提出了展望。
Abstract:Ecological slope protection can effectively reduce a series of geological environmental problems caused by engineering construction, such as soil erosion and landslides. The vegetation concrete ecological restoration technology, which is one of the common ecological slope protection technologies in China, has become mature after continuous researches and applications. The theoretical basis of ecological restoration of vegetation concrete technology were discussed, the research and development experience of vegetation concrete technology were expounded. The main contents of vegetation concrete technology was introduced from the aspects of substrate ratio, species selection and construction technology, and the technical advantages were summarized. The research system of vegetation concrete technology was summarized and the research progress of vegetation concrete ecological restoration technologies was reviewed from four aspects of physical, chemical, microbial characteristics of habitat substrate and slope protection plants. The problems for improvement of vegetation concrete ecological restoration technology were analyzed, and the development prospects of vegetation concrete ecological restoration technology were proposed in terms of the construction technology, conservation measures and soil improvement.
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表 1 植被混凝土基材配比[23]
Table 1. Ingredients ratio of vegetation concrete substrate
基材 用量 作用 条件 壤土水泥生态改良剂有机物料
植绿种子/(g/m2)1001)8~101)
4~51)5~71)30创造植物生长的基本条件提高基材强度和抗冲刷性能改善基材结构与养分转化
增大土壤空隙,提供养分提供护坡植物含砂率小于10%且最大粒径小于1.0 cm的壤土P.O 32.5普通硅酸盐水泥能够调节基材理化性质,促进基材活化一般以酒糟、锯末、稻壳为主冷季型与暖季型先锋物种混合播种 1)为壤土、水泥、生态改良剂、有机物料的相对质量比,无量纲。 -
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