京珠高速公路粤境南段边坡的生态防护

以京珠高速公路粤境南段终点路段边坡为例,分析了高速公路边坡的环境特点,系统介绍了该标段边坡的生态护坡形式及其施工技术,探讨生态护坡技术存在的问题。高速公路边坡一般生境条件比较恶劣,边坡高陡、土层浅薄、土壤肥力低下,常用锚杆挂网、浆砌片石等工程措施结合液压喷播、喷混植生和三维植被网等技术,对边坡实施生态防护。为了进一步推广应用生态护坡技术,必须加强技术的规范化,并重视乡土植物品种的应用。

Ecological Protection of Side Slope in Beijing-Zhuhai Expressway in Guangdong

The environment of the slope in Beijing-Zhuhai expressway in Guangdong is usually not adapted to be the habitat because of the high and steep slope, soll flimsiness and soil leanness. Taking the southern segment of the expressway as an example, the environmental characteristics of the slope in the expressway were presented for the ecological slope protection. The methods of the ecological slope protection along the expressway and its construction technologies, such as hydraulic seeding, three dimensional plant net and spray sowing, were introduced systematically. The slopes have been protected by using these technologies in the expressway, combined with engineering measures including mortar rubble grid, rockbolts and wire netting. It is necessary for the technology regularization of the ecological slope protection, and native plants should be paid more attentions.