复杂环境条件下的洞内管井降水技术研究
摘要:城市中心密集建筑群使得地铁需长距离穿越既有建（构）筑物，导致地面管井施工作业条件越来越难，降水沉降控制要求也越来越严。从轨道交通工程建设出发，当受施工场地限制时，提出在导洞内施工管井，并对降水导洞的设计、成井机械及施工工法进行了论述。针对施工降水引起的附加沉降，采用地下水三维渗流与地面沉降耦合模型计算软件——Processing Modflow，建立地下水流场与地面沉降的耦合模型，根据现场监测数据，运用参数修正后的模型，设计不同的抽降方案，分时段进行沉降预测，及时分析施工降水对周围环境的影响程度，可指导类似工程施工，具有重要的工程实际意义。
Abstract:City center metro dense buildings need to make a long distance through the existing building (structure), resulting in ground tube well construction and more difficult operating conditions, precipitation, sedimentation control requirements have become more stringent. In this paper, starting from the rail transit construction, when restricted by the construction site, construction of tube wells proposed in the guide hole, and precipitation guide hole design, as well machinery and construction method are discussed. For additional settlement construction precipitation caused by the use of three-dimensional groundwater flow model coupled with land subsidence calculation software——Processing Modflow, establish coupling model of groundwater flow field and land subsidence, according to the on-site monitoring data, the model parameters using the modified, different designs pumping down the program, scheduled settlement prediction conduct timely analysis of the impact of construction on the surrounding environment of precipitation, and can guide a similar construction, the project has an important practical significance.
中文标题：
复杂环境条件下的洞内管井降水技术研究
Research of the Tunnel and Dewatering Technology under Complicated Environment Conditions
作者：
宋克英,冯科明,马健
Song Keying,Feng Keming,Ma Jian
作者简介:宋克英,1981年生,男,汉族,安徽铜陵人,硕士研究生,工程师,注册土工工程师(岩土),注册一级建造师,主要从事岩土工程勘察、设计、施工等方面的工作。E-mail:230676648@qq.com
通讯地址：
北京城建勘测设计研究院有限责任公司, 北京, 100101
BeijingUrbanConstructionExplorationandSurveyingDesignResearchInstituteCo.,Ltd,Beijing100101,China
中图分类号:U231.3
doi:10.3969/j.issn.1007-2993.2014.06.007
出版物：岩土工程技术
收稿日期:2014-04-10
网络出版日期:2021-07-19
关键词:导洞,管井降水,沉降预测
Key words:guide hole,well dewatering,settlement prediction
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