可调水量浅井在基坑管涌防治中的设计与应用

Design and application of shallow wells with adjustable water quantity in prevention and treatment of foundation pit piping

在地下水源丰富、承压水水头高的深基坑场地,坑内一旦发生管涌不仅直接影响基坑自身安全,而且严重影响周边建筑物及地下管线的安全。文章介绍的可调水量浅井是通过对管涌点处水流加以引流,并通过改变特制滤芯与井管搭接长度以达到调节水量为目的的管井。经过现场实验与论证,成功处理了基坑管涌事故,既快速又经济。

The deep foundation pit piping is often found in sites with rich ground water and high confined water head. The piping will not only directly affect the safety of the foundation pit itself, but also seriously affect the safety of surrounding buildings and underground pipelines. This paper introduces the hallow wells with adjustable water which can drain the water in the piping point and achieve the purpose of regulating the amount of water and treating the piping by changing the lap length between special filter and well tube. Through field experiment and demonstration, shallow well with adjustable water can successfully handle piping with low cost of time and money.