• 中国科学引文数据库(CSCD)来源期刊
  • 中文核心期刊中文科技核心期刊
  • Scopus RCCSE中国核心学术期刊
  • 美国EBSCO数据库 俄罗斯《文摘杂志》
  • 《日本科学技术振兴机构数据库(中国)》
二维码

隧道建设(中英文) ›› 2012, Vol. 32 ›› Issue (增刊2): 147-152.DOI: 10.3973/j.issn.1672-741X.2012.z2.029

• 施工技术 • 上一篇    下一篇

PBA车站下穿污水管线施工技术

黄建军   

  1. (北京中铁隧建筑有限公司, 北京 100022)
  • 收稿日期:2012-07-31 修回日期:2012-09-14 出版日期:2012-12-20 发布日期:2013-02-19
  • 作者简介:黄建军(1984—),河南确山人,2008年毕业于河南理工大学土木工程专业,本科,助理工程师,从事市政地铁工程的技术管理工作。

PBA Method for Zhushikou Station Construction under Existing Sewage Pipeline

HUANG Jianjun   

  1. (Beijing Construction Co., Ltd. of China Railway Tunnel Group, Beijing 100022, China)
  • Received:2012-07-31 Revised:2012-09-14 Online:2012-12-20 Published:2013-02-19

摘要:

北京地铁7号线珠市口站为大型PBA暗挖车站,车站上层北侧边导洞施工时,需要近距离平行下穿1 950污水管道,由于污水管道内水流深,速度急,且管道接头长期渗漏等原因,可能会在沿线造成多处水囊,给结构施工带来不可预见的地质灾害,而车站导洞结构施工时的扰动、坍塌或地层变形,又会加重对污水管道结构的影响和破坏,从而导致结构施工风险加大。这种相互影响、相互制约的风险因素,是结构施工时风险控制所面临的艰巨任务。通过对本工程施工实例的介绍,总结了市政暗挖工程在不良地质条件下下穿既有大型污水管道施工时进行风险控制的技术措施,提出了隧道内强化预注浆加固,隧道外对污水管道实施截流和施作内衬并辅以必要的辅助手段进行风险控制的双重控制思想,以期为类似工程施工提供借鉴。

关键词: 暗挖工程, 风险源, 坍塌, 沉降

Abstract:

Zhushikou station on No.7 line of Beijing Metro is a large mined station constructed by PBA method and its north heading is closely and parallel running under a sewage pipe with 1950mm diameter. As a result of the water in sewage pipe run quickly and deep as well as the leakage among pipe joints, there are many pools along pipeline, which may induce unpredictable geological risk to heading construction; and conversely the disturbance, collapse and ground deformation during north heading construction of Zhushikou station may also bring severe destroy to sewage pipe and result in high heading construction risk. Thus the interaction between sewage pipe and heading construction is a crux task for the successful construction of Zhushikou station. Then according to the construction experiences of Zhushikou station, the risk control technologies for underground urban projects below existing sewage pipes in adverse geological conditions are summarized and a new risk control theory is proposed in this paper. That is strengthening pre-grouting in tunnel and cutting water flow in sewage to install line for pipe as well as other assistance measures. This double risk control theory can provide references for similar projects construction.

Key words: mined tunnel project, risk source, collapse, settlement