华东数省普遍地下水位较高,建造桥梁时的基础开挖工程和其它开挖工程中,地下水抽吸问题一直较难解决。工程施工中通常靠挖排水沟来降低地下水位,此法既费工费时、效果差,又难以保证工程质量。近几年来在地下水位较高的工程施工中,基础开挖时较广泛地应用了井点(这里仅介绍机械真 In eastern China, where the water table is generally high, the groundwater pumping problem has been more difficult to solve in the foundation excavation and other excavation works during the construction of bridges. Drainage ditches are usually used to reduce the groundwater level during construction. This method not only costs time and money but also produces poor results, making it difficult to ensure project quality. In recent years in the construction of higher groundwater table construction, the foundation excavation more widely applied well point (here only describes the mechanical really