成都地铁6号线建设中的市政管线迁改设计

Design of Municipal Pipeline Reconstruction during Subway Construction of Chengdu Metro Line 6

地铁建设会导致既有市政管线的迁改,市政管线具有管网数量多、服务范围广、埋设深、管径大、迁改难度高等特点。结合成都地铁6号线一、二期工程,对地铁管线迁改工作思路、基本方法、迁改基本原则进行分析;探讨了市政管线常用施工措施如明挖、支护开挖、顶管、拖拉法及泥水盾构等的适用条件;介绍了地铁6号线典型管线设计思路,提出设置出入口位置或改变其出口爬坡形式避让埋设深排水管、排水管道合理改渠道等各种方法。

Subway construction would lead to the reconstruction of municipal pipeline. In the process of municipal pipeline reconstruction, many difficulties including large number of pipelines, wide spectrum of services, laying depth and large-diameter pipes would encountered. Took the first and second phase projects of Chengdu metro line 6 as an example, the reconstruction ideas, basic approach and prin- ciples were analyzed in this paper. And then, the application conditions of construction measures, such as open cut, braced excavation, pipe-jacking, drag method and slurry type shield were discussed as well. The typical design location or form to avoid sonably were method of line 6 was introduced. And the methods of setting up the passageway the laying of deep drain pipe, the drainage pipe and changing the channel rea- put forward.