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在多年的地铁建设实践中,对于地下水的处理先后使用了堵水法、明排法和降水法等多种方法。从实践经验来看,降水法在处理地下水方面效果显著,在地铁施工中得到了广泛的应用。降水法又包括管井降水和辐射井降水。管井降水在多年的工程实践中取得了成功的经验,由于其施工简便,降水效果良好,是目前北京地铁工程降水中应用最广泛的一种方法。而辐射井降水作为一种新的降水方法在解决城市复杂地区的降水有着非常明显的优势,并且有较好的降水效果,因而在北京地铁工程降水中得到了越来越多的应用。
In many years of subway construction practice, for the treatment of groundwater has used a plugging method, the platoon method and precipitation method and other methods. From the practical experience point of view, precipitation method in the treatment of groundwater effect is remarkable, in the subway construction has been widely used. Precipitation method, including tube well precipitation and radiation well precipitation. Tube well precipitation has gained successful experience in many years of engineering practice. Due to its simple construction and good precipitation effect, it is currently the most widely used method for precipitation in Beijing Metro. Radiation well precipitation, as a new precipitation method, has obvious advantages in solving the precipitation in the complicated urban areas and has better precipitation effect. Therefore, it has been applied more and more in the precipitation of Beijing Metro.