论隧道洞口段的绿化设计

随着基础设施建设及环境保护的协调发展，隧道洞口边、仰坡和洞门区域的植被恢复与绿化设计技术研究已越来越受到工程界的重视。隧道洞口设计不能象过去一样仅仅做单一的结构设计，必须与绿化设计有机结合。但目前这方面的研究成果很少。文章从隧道洞口绿化设计的一般原则、绿化设计模式、与洞门结构相适应的绿化方法以及景观效果等方面，研究了隧道洞口段绿化设计方法。提出洞门结构设计与景观效果设计有机结合的原则，总结了隧道洞口绿化设计的总体模式。该模式给出进行洞口绿化设计时需要做的全部工作，包括洞门位置选择、洞口结构设计、绿化方法优选、边、仰坡的稳定性分析、景观效果设计等内容。除了考虑植被效果外，还须考虑隧道所在地的环境与意境的协调以及人文景观设计。成果可为工程界做好隧道洞口段的绿化设计提供参考。

Discussion on the design of greening at portal part of tunnel

With the development of the foundation facilities construction and environment protection, it is more important for the vegetation recovery and virescence design of the slopes and the area near the portal of tunnel. The design of the tunnel portal is not only structure design, but also multiple designs with the virescence and landscape of the tunnel portal. The structure design must be reasonably combined with the design of portal part virescence. The design method of portal virescence of tunnel has been put forward in this paper, including general design principle of tunnel portal virescence, the design flow chart, and the virescence methods fitting the portal structure and the landscape. The general design flow chart and the principle of how to combine the portal structure design with the landscape design are given. The flow chart shows all the works of the design for virescence portal part of tunnel, consisting of the portal position selection, portal structure design, the optimizing virescence methods, the stability analysis of the slopes, and the effect of landscape design etc. The environment and humanities landscape design are also discussed in this paper.