生物基质混凝土在硬质护坡生态化工程中的应用

Study on bio-substrate concrete in ecological restoration on impermeable slope protection

研究以生物防护为主的生态修复技术,用于硬质护坡的生态化工程修复中。基于某已建工程区域的BSC生态修复(防护)技术,通过对骨料配比、淤泥生物基质配方以及修复植被配置方案进行调查测试,提出优化的应用生物基质混凝土进行硬质护坡生态化的方案。结果表明,使用富含菌落的基质层,同时结合多样植物配置的方法,可以满足硬质护岸护坡生态化修复的需求。使用BSC-WY06型添加剂,水泥掺量为340 kg/m^(3)时,骨料层强度有显著提升。当BSC-J菌剂采用50 kg/m^(3)用量时,可较好调节淤泥种植土pH值,且保证土壤持水孔隙率。采用乡土植物组合的植被恢复整体效果较好,同时在建设初期即可获得生物多样性,并具有一定景观效果。

An ecological restoration technique based on BSC(Bio-Substrate Concrete)has been applied in the ecological restoration engineering with an impermeable slope.Investigations were performed on an existing slope protection project regarding the aggregation,biological substrate and restoration plant configuration.A solution to ecological restoration is provided based on the present study.Results show that a good ecological restoration effect can be obtained by using BSC-J substrate additives and multi-restoration plants plan.The compression strength of the aggregation layer is enhanced significantly using BSC-WY06 additives,together with an amount of 340 kg/m^(3)for the cement.An amount of 50 kg/m^(2)for BSC-J is proposed for a better pH value of plant earth,as well as a guarantee of the soil porosity.Field observation and statistical analysis on the plant restoration effect suggest a plant selection of local restoration plants,for the purpose of bio-diversity at the initial stage of construction and landscape effect.