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地铁施工中不可避免的与市政管线发生交叉,大部分管线采取迁改、回迁的方式,减少对施工的影响,对于不具备迁改条件的管线,管线的保护成为安全的重点,特别是与水有关的管线更是管线保护的重中之重,当地质条件为湿陷性黄土时,对水管的保护尤为重要。西安地铁一号线枣园站出入口暗挖通道上方有一条DN2200排水管,承插式接头。与开挖面净距仅64CM。施工中采取有效措施,控制了管线沉降,确保了管线安全。
Subway construction inevitably intersects with municipal pipelines, and most of the pipelines adopt the method of relocation and relocation to reduce the impact on construction. The protection of pipelines and pipelines that do not have the conditions of relocation becomes the focus of safety, especially with water The relevant pipeline is the most important part of pipeline protection. When geological conditions are collapsible loess, the protection of water pipes is particularly important. Xi’an Metro Line Zaoyuan station entrance undercutting a DN2200 above the drainage pipe, socket connector. With the excavation surface clearance of only 64CM. Effective measures were taken during the construction to control the pipeline settlement and ensure the pipeline safety.