浅谈地铁深基坑降水施工技术

The Dewatering Construction Technology of Subway Deep Foundation Pit

降水是深基坑施工中的一道重要环节,大部分基坑事故都与降水有关。如何在工程现场错综复杂的不利条件下进行有效降水并避免降水施工对周边道路、管线及建筑物的破坏是深基坑工程按照技术要求、计划工期实施的先决条件。本文结合北京地铁十号线二期角门西站深基坑降水施工实例,分析深基坑降水施工特点,浅谈降水施工及运行质量控制因素,总结实施过程遇到的实际问题、处理方法,积累了宝贵的降水施工经验。

Dewatering is an important link in the construction of deep foundation pit excavation, and most accidents are related with the dewatering. How in the engineering field under adverse conditions perplexing effective dewatering and avoid destroying the dewatering construction on the surrounding roads, pipelines and structures is of deep foundation pit engineering in accordance with the prerequisite requirements, implementation of the plan period. In this paper, combined with the Beijing metro line ten construction examples of deep foundation pit precipitation phase two gate station, it analyzes construction characteristics of the foundation pit dewatering, the dewatering in the construction and operation of quality control factors, sums up the processing method, practical problems encountered, and accumulated valuable experience in construction.