深厚软土地层深基坑降水方案设计与施工关键技术研究——以绍兴市轨道交通2号线越王路站为例

Research on key technology of dewatering scheme design and construction of deep foundation pit in deep soft soil layer——taking Yuewang Road Station of Shaoxing rail transit line 2 as an example

软土含水量高、强度低、渗透性低的特点加大了深基坑降水的难度,增加了地铁建设中的风险。本文依托绍兴市轨道交通2号线越王路站工程项目,基于越王路站基坑的规模和工程特点,对深厚软土地区深基坑降水设计方案和深基坑降水施工关键技术进行研究,获取了降水设计方案和关键施工技术流程,可为类似工程施工提供借鉴。

Soft soil has the typical properties of high water content, low strength and low permeability, which increases the dif f iculty in the dewatering of deep foundation pit a nd the risk in subway construction. Taking the Yuewang Road Station of Shaoxing Rail Transit Line 2 for example, based on the scale and geological characteristics of the foundation pit of Yuewang Road station, the design scheme of deep foundation pit dewatering in deep soft soil area and the key construction technology of deep foundation pit dewatering construction are investigated. Finally, the design scheme and technical process are obtained.