既有高速公路改扩建中的高边坡绿色智能施工技术

Green-Intelligent Construction of High Slopes in Existing Expressway Reconstruction and Expansion

摘要: 随着我国社会经济快速发展，早期建设的高速公路因通行能力不足等问题亟需改扩建，而既有高速旁高边坡施工存在岩体破碎、落石滑坡等安全隐患。本文以长春至深圳国家高速公路河源热水至惠州平南段改扩建工程T2标段为实例，重点阐述了集智能监控、安全防护、环保施工于一体的高边坡施工技术。该施工技术通过临边防护设计、智能监测系统应用及分层开挖与及时防护相结合的技术，实现了“开挖一级、防护一级”的施工原则，有效保障了边坡稳定与既有高速行车安全。研究表明，该施工技术不仅减少了施工安全隐患和环境影响，还通过优化开挖方式与机械配置，节约机械台班约229个，节省成本约80万元，展现出显著的经济与社会效益，对同类高速改扩建高边坡施工具有重要的推广应用价值。

Abstract: With the rapid social and economic development of our country, the early construction of highways urgently needs to be reconstructed and expanded due to insufficient traffic capacity, and the existing high-speed side slope construction has potential safety hazards such as rock mass fragmentation and rockfall landslides. This paper takes the T2 bid section of the reconstruction and expansion project from Heyuan Shuihui to Huizhou Pingnan section of the Changchun-Shenzhen National Expressway as an example, and focuses on the high slope construction technology integrating intelligent monitoring, safety protection and environmental protection construction. Through the edge protection design, the application of intelligent monitoring system and the combination of layered excavation and timely protection, the construction technology realizes the construction principle of “excavation level 1 and protection level”, and effectively guarantees the stability of the slope and the safety of existing high-speed driving. The research shows that the construction technology not only reduces the construction safety hazards and environmental impact, but also saves about 229 mechanical shifts and saves about 800,000 yuan in costs by optimizing the excavation method and mechanical configuration, showing significant economic and social benefits, and has important promotion and application value for the construction of similar high-speed reconstruction and expansion of high slopes.