临近江河超深基坑降排水方案设计及施工技术研究

Precipitation and Drainage Design of Ultra-deep Foundation Near the River and Construction Technology

超深基坑工程中降水不仅可以改善施工场地条件,而且可以减少水土压力,降低渗透水头和改善地基性质。但由于降水会影响坑外环境,所以通常在环境要求严格区域,限制使用降水。文章研究主要内容为临近江河的超深基坑降水系统控制,包括系统的设计、试验和降水实施等方面。

Precipitation in ultra-deep foundation construction site can not only improve conditions,and can reduce soil and water pressure,and reduce head penetration and improve the soil infiltration properties.However,precipitation will affect the environment outside the pit,so the precipitation is restricted to use in area where it has strict environmental requirement.The main content of the article is the precipitation system control of the ultra-deep foundation near rivers,including design,testing and implementing precipitation of system and other aspects.