悬挂式止水帷幕的应用

为研究长春伊通河旁特殊地质条件下悬挂式止水帷幕地铁深基坑的降水对周边环境的影响,以长春市伊通河旁东大桥地铁车站基坑工程为背景,通过悬挂式止水2种工况的抽水试验及降水设计对周边环境的影响,并将数值模拟所得的结果与现场实测数据对比,验证数值模型的正确性和准确性。在富水砂层基坑围护结构中,如何在保证技术先进性和基坑安全性的前提下,确定合理的嵌入深度,达到经济效益合理化,减少对资源的消耗和浪费,非常值得探讨。

In order to study the influence of the precipitation of the subway deep foundation pit with suspended water stop curtain on the surrounding environment under the special geological conditions along the Yitong River in Changchun,taking the foundation pit project of the subway station of the East Bridge beside the Yitong River in Changchun as the background,through the pumping test of suspended water stop under two working conditions and the influence of dewatering design on the surrounding environment,and comparing the numerical simulation results with the field measured data to verify the correctness and accuracy of the numerical model.In the retaining structure of foundation pit with water-rich sand layer,it is worth discussing how to determine the reasonable embedding depth,rationalize economic benefits and reduce the consumption and waste of resources on the premise of ensuring the advanced technology and the safety of foundation pit.