综合管廊穿越河道的明挖法围堰导流施工工艺

Construction Technology of Cofferdam Diversion by Open Excavation Method for Utility Tunnel Crossing River Channel

以西安市地下综合管廊建设PPP项目Ⅰ标段户县沣京路潭峪河段工程为例,阐述了横穿潭峪河段的综合管廊施工工艺。依据施工段的实际情况,采用了导流渠引流、钢板桩围堰明挖的方法施工,降低了洪水对施工的影响,实现了内部降水,保证了施工周期,具有缩短降水周期、可周转使用、降低成本、减少地下垃圾的产生等优点,对类似工程有一定的参考价值。

Taking the project Tanyu River section of Fengjing Road in Hu County of the PPP project bid section I in the Xi’an underground utility tunnel construction as an example, the construction process of the utility tunnel across the Tantun River section is described. According to the actual conditions of the construction section, the construction method of diversion channel for drainage, steel sheet pile cofferdam and open excavation method is adopted to reduce the impact of flood on the construction, to realize the internal precipitation, and to ensure the construction period, which has the advantages of short precipitation period, turnover use, cost reduction and less underground garbage etc., and has certain reference value for similar projects.