城市新建道路工程既有地下管道保护方案研究

根据城市发展需要，城市道路建设与周边用地开发并非同步进行，工程中时常遇到建设用地下方存在既有管道的情况，一般根据管道埋深、管道规模并综合工程可行性及经济性，选取保护或迁移的设计方案。对于大型管道的保护通常采用护管桥涵或者轻质材料换填的方式，两种技术方法各有其优缺点及适用性。依托项目实际情况，探讨合理的管道迁移或保护技术方案，为类似情况的工程提供参考。

Protection Scheme of Existing Underground Pipeline in New Urban Road Construction

According to the needs of city development, the urban road construction cannot be carried out with the development of surrounding land are at the same time. In engineering, there are often the existing pipelines under the construction land. Generally, the design scheme of protection or relocation is selected according to the buried depth and scale of pipelines, and integrating the engineering feasibility and economy. For the protection of large pipelines, the methods of protection pipe bridge culvert or light material replacement are usually used. Each method has its advantages, disadvantages and applicability. Based on the practical situation of the project, the reasonable technical schemes of pipeline removal or protection are discussed, which can be referred for the similar projects.