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在山区低等级道路建设期,“以投资经济为主”是设计主导思想,“填挖平衡、纵向利用、降低造价”是主要的设计原则。随着高等级公路建设的迅猛发展,现今提出了“环保优先”的指导思想,提出建设生态路、环保路等基本概念。为适应“环保”大趋势,从设计理念、工程应用现状和环境保护效应等角度对山区公路短隧道合理替代深挖路堑进行探讨,给出了西安~汉中高速公路中的应用实例,并提出了进一步研究的建议。
In the low-grade road construction period in mountainous areas, “investing mainly in economy ” is the dominant principle of design, “filling and excavation balance, vertical utilization, reduce the cost ” is the main design principle. With the rapid development of high-grade highway construction, the guiding ideology of “priority for environmental protection” has been put forward today, and the basic concepts of building an ecological road and environmental protection road have been put forward. In order to meet the general trend of “environmental protection”, this paper discusses the rational replacement of deep cut-off cuttings in mountainous highway short tunnels from the perspectives of design concept, engineering application and environmental protection effects, and gives examples of application in the highway from Xi’an to Hanzhong Put forward suggestions for further research.