深基坑工程隔渗帷幕技术的探讨

Discussion on Seepage Barrier Curtain Technology of Deep Foundation Pit Engineering

对基坑稳定性产生影响的各种因素中,地下水控制占据主导地位。近年来基坑工程安全事故的发生,大多数和地下水控制不当有关,其中防止发生渗透破坏是地下水控制的首要目的。地下水控制方法包括隔渗、降水及两种方法的多种组合。采用隔渗帷幕控制地下水时,应根据地质条件、开挖深度、周边环境以及机械设备的适用条件,选择合理的设计方案和适宜的工法,同时施工过程中应加强施工质量管理,确保基坑隔渗帷幕严密不漏,只有多措并举,才能取得较好的地下水控制效果。

Among the factors that affect the stability of foundation pit,groundwater control plays a dominant role.In recent years,most of the safety accidents of foundation pit engineering are related to improper groundwater control,among which preventing seepage damage is the primary purpose of groundwater control.Groundwater control methods include seepage isolation,precipitation and a variety of combinations of the two methods.When the seepage barrier curtain is used to control groundwater,reasonable design scheme and appropriate construction method should be selected according to geological conditions,excavation depth,surrounding environment and applicable conditions of mechanical equipment.At the same time,construction quality management should be strengthened during the construction process to ensure that the seepage barrier curtain of the foundation pit is tight and not leaking.Only by taking multiple measures at the same time,can better groundwater control effect be achieved.