粉砂地层隧道盾构水下贯通技术
Underwater Tunnel Shield Holing-through Technique Applied in Silt-sand Layer
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- DOI:
- 作者:
- 李胜新, 陈宙, 邢舒宁
LI Shengxin
- 作者单位:
- 中国石油天然气管道局第四工程公司
China Petroleum Pipeline Fourth Construction Co., Langfang 065000, China
- 关键词:
- 盾构法;粉砂层;地质改良;水下贯通
shield method;silt-sand layer;geological improvement;underwater holing-through
- 摘要:
- 盾构法贯通松散强渗透粉砂层时,地下水封堵不当会造成接收井洞门涌水涌砂,导致地面沉降、管片错位变形、甚至隧道变形塌陷等重大险情。采取水下接收贯通技术,配合地面地质改良、洞门注浆封水等措施,可有效解决以上问题。该技术在工程实践中得到成功应用,降低了盾构法施工的风险。
In underwater tunnel shield holing-through construction in loose silt-sand layer with strong osmosis, improper groundwater sealing grouting will cause water and sand gushing at the hole gate of receiving well, leading to ground subsidence and pipe segment misposition or deformation, even to tunnel deformation and collapse. Adopting underwater receiving well holing-through technique, together with the measures such as ground geological improvement and hole gate grouting sealing can effectively solve the above -mentioned problems. This technique is successfully applied in the Qiantang River tunnel project, reducing the risk in shield construction.2013,2(2): 22-26 收稿日期：2012-1-29DOI：10.3969/j.issn.1001-2206.2013.02.007分类号：U455.43作者简介：李胜新（1957-） ,男，江苏海门人，高级工程师，2005 年毕业于武汉理工大学机电一体化专业，硕士，现从事盾构施工技术研究和工程管理工作。参考文献：
[1] 竺维彬, 鞠世健. 复合地层中的盾构施工技术[M]. 北京:中国科学技术出版社, 2006.117.
[2] 刘广仁，常喜平，寇宝庆，等. 盾构法施工中砂层进洞段降水设计与施工[J]. 石油工程建设，2012，38（1）：36-38.