沉井法工作坑在长输管道顶管施工中的应用
Application of Open Caisson as Work Pit in Pipe-pushing Construction of Long Distance Pipeline
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- DOI:
- 作者:
- 衣国辉
YI Guo-hui
- 作者单位:
- 中国石油天然气管道局第一分公司 河北廊坊 065000
First Subcompany of China Petroleum Pipeline Bureau, Langfang 065000,China
- 关键词:
- 管道施工;穿越公路;沉井制作
pipeline construction;crossing highway;fabrication of open caisson
- 摘要:
- 顶管穿越公路、铁路在长输管道施工中得到越来越广泛的应用,尤其是地下水丰富、工作面狭窄地段的公路、铁路穿越,其顶管工作坑的要求相对较严格,广东LNG站线项目输气干线6标段穿越工程,因地处城市管网与江南水网地段,故选用沉井作为顶管作业坑,在沉井内进行管道顶管和焊接作业。文章以该工程为例,介绍了沉井的工艺原理、技术参数、施工流程、技术要点及安全环保措施,分析了沉井下沉过程中的异常情况,提出了预防和处理方法。
An open caisson was used as work pit for pipeline crossing at the sixth bid section of the gas transmission trunk line of the Guangdong LNG station and pipeline project, which is located at the region of urban pipeline network and water network. Pipe-pushing operation and welding operation were performed in the open caisson. Taking this project as an example, this paper illustrates the process principle, technical parameters, constructional procedure, key technical points as well as safety and environmental protection, analyses the abnormity in the course of caisson sinking, and puts forward the prevention and treatment methods.2007,3(3): 30-33 收稿日期：2006-4-20分类号：TE973.4作者简介：衣国辉(1972-),吉林农安人,工程师,1996年毕业于长沙工业高等专科学校,现从事长输管道施工、站场安装、土建工程技术工作。参考文献：
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[2] 江正荣.建筑施工计算手册[M]. 北京: 中国建筑工业出版社,2001.
[3] 马保松, Stein D, 蒋国盛.顶管和微型隧道技术[M]. 北京: 人民交通出版社, 2005.