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湿喷植被混凝土生态护坡技术在水渠边坡工程中的应用
叶建军1, 陈阳阳1, 黄涛2
1.湖北工业大学 土木建筑与环境学院, 湖北 武汉 430068;2.武汉康习环保科技有限公司, 湖北 武汉 430000
摘要:
[目的] 验证湿喷植被混凝土生态护坡技术的先进性与实用性,为工程边坡生态防护提供参考。[方法] 将湿喷植被混凝土生态护坡技术应用于湖北省鄂州市花马湖水系连通渠护坡工程,现场观测了护坡和水土保持效果、植物盖度、植株密度、植物平均高度以及物种多样性指标。[结果] 湿喷植被混凝土生态护坡技术能促使边坡稳定。所用基材能较好地附着于坡面,未出现冲沟和滑塌,水土保持较好,成功解决了基材可喷射性和坡面附着性之间的根本矛盾;1个月后坡面整体植被覆盖率达到90%以上;缓坡区的Shannon-Wiener多样性指数、Pielou均匀度指数、Simpson优势度指数与陡坡区均较为接近,但与自然边坡存在差异;湿喷综合成本比干喷节约5%~15%。[结论] 湿喷植被混凝土生态护坡技术作为干喷植被混凝土生态护坡技术的升级版,具备显著的先进性,能用于工程边坡的生态防护。
关键词:  湿喷  植被混凝土  岩石边坡  生态护坡  施工工艺
DOI:10.13961/j.cnki.stbctb.20200623.001
分类号:S157.9
基金项目:国家重点研发计划项目“西南水电高坝大库梯级开发的生态保护与修复技术”(2016YFC0502208);中铁十六局横向科研项目(4201/00324)
Application of Ecological Slope Protection Technology of Wet-Spraying Vegetation-Compatible Concrete in Channel Slope
Ye Jianjun1, Chen Yangyang1, Huang Tao2
1.School of Civil Engineering and Environment, Hubei University of Technology, Wuhan, Hubei 430068, China;2.Wuhan Kangxi Environmental Protection Technology Co., Ltd., Wuhan, Hubei 430000, China
Abstract:
[Objective] The advancement and practicality of wet-spraying vegetation-compatible concrete (VCC) were studied to provide a reference for ecological protection of engineering slopes.[Methods] The application of the new technology in the slope protection of a channel connected to Huama Lake in Ezhou City, Hubei Province, was presented. The effects of slope protection and soil and water conservation were observed. Furthermore, the plant coverage, plant density, average plant height, and species diversity index were tested on site.[Results] The technology could keep the slopes remained stable. The VCC substrate could adhere well to the slope surface, without forming gullies and slumps, with good soil and water conservation. The fundamental contradiction between the spraying of the VCC substrate and its adhesion to the slope surface was successfully solved. One month after the construction, the overall vegetation coverage of the slope reached more than 90%. The Shannon-Wiener diversity index, the Pielou evenness index, and the Simpson dominance index of the vegetation in the gentle-slope area were similar to those in the steep-slope area, but there were differences from the natural slope. The overall cost of the new technology (wet-spraying version) was 5%~15% lower than that of the old one (dry-spraying version).[Conclusion] As an upgraded version of dry-spraying VCC, this new technology shows significant advancements and can be used for ecological protection of engineering slopes.
Key words:  wet spraying  vegetation-compatible concrete  rock slope  ecological slope protection  construction technique