辐射井在沈阳地铁一号线降水中的应用

Application of Radiation-Well in Dewater of Shenyang Subway Line One

目的解决沈阳地铁一号线滂江街站的降水问题.方法采用辐射井降水方法,在滂江街站穿越沈海立交桥段布设4眼辐射井.采用适宜的计算模型计算辐射井的出水量,采用人工取土自重下沉施工工艺进行竖井施工,采用水平孔套管水力正循环施工工艺进行水平井施工.结果辐射井有效地控制了其辐射区段的地下水位,保证了结构施工的顺利进行.同时,在沉降方面,保证了相临建筑物的安全.证明了在沈阳地区的地质和水文情况下,辐射井同样适用.结论辐射井的应用消除了地铁降水对地面既有交通设施和经济社会生活造成的影响,减少了建筑物搬迁移动,降低了施工成本,取得了良好的社会效益和经济效益.

For solving the problem of precipitation at Bangjiang Street Station of Shenyang Subway, there are four radiation-wells crossing Shenhai overpass section around Bangjiang Street Station by using the method of radiation-well precipitation. The volume of gush water is calculated by well calculating model. Vertical well construction is used by artificial excavator and self-sinking technology. Level well construction is used by casing hydraulic cycle of construction technology. The radiation-well controls the water table in the radial section effectively, and ensures the progress of the construction of the structure to go on smoothly. At the same time ,the safety of adjacent buildings is ensured in the field of settlement. It proves that radiation-well is also applicable to geological and hydrological conditions of Shenyang. The application of radiation-well eliminates the effect of subway precipitation on ground transport facilities and the economic society life, reduces the relocation of mobile buildings and the construction cost and gains both economic and social benefit.