基于环境控制的深基坑工程管井回灌设计分析

Analysis on the Design of Tube Well Recharge for Deep Foundation Pit Engineering Based on Environmental Control

为探讨管井回灌在深基坑工程中的设计及应用,分析了基于环境控制的深基坑工程管井回灌设计的特殊性,开展了悬挂式帷幕下不同回灌滤管类型的降水回灌渗流分析及对比,探讨了影响回灌管井平面布设以及管井滤管设计的关键因素,同时针对深基坑工程回灌的特殊性,提出了"双点位流态"控制设计原则、回扬控制措施的确定方法以及回灌水质应满足的3项原则。

For the design and application of tube well recharge in deep foundation pit engineering, the analysis is made on the particularity of recharge well design for deep foundation pit engineering based on environmental control, the comparison is carried out on dewatering recharge seepage of different recharge filters for hanging curtain and the discussion is made on the key factors affecting plane layout of recharge wells and the design of tube well filter.Aiming at the recharge particularity of deep foundation pit engineering, design principles of“two points flow state” control and determination methods of the lift pump pressure control are put forward, the paper also present 3 principles that the injection water quality should meet.