暗挖电力隧道侧穿高压铁塔的技术研究与分析  

Technical research and analysis on shallow-buried electric power tunnel passing alongside high voltage iron tower

作　　者：韩春龙 李翔宇 HAN Chunlong;LI Xiangyu(Shanghai Electric Power Design Institute Co.,Ltd.,Shanghai 200025,China;Institute of Foundation Engineering,China Academy of Building Research,Beijing 100013,China)

机构地区：[1]上海电力设计院有限公司,上海200025 [2]中国建筑科学研究院有限公司地基基础研究所,北京100013

出　　处：《建筑结构》2021年第3期138-143,共6页Building Structure

摘　　要：以北京市某电力隧道工程项目为例,研究了隧道在开挖过程中如何保证邻近高压铁塔安全的技术方案,给出了加强隧道初衬结构、袖阀管跟踪注浆、隔离桩保护三个方案,并对以上方案进行了详细分析与介绍,最终采用加强隧道初衬结构与隔离桩保护相结合的方案。通过运用PLAXIS2D有限元软件,分析了设置隔离桩后,隧道开挖对高压铁塔的基础影响,并结合现场监测数据,验证了所采取的技术方案能够满足工程需要、保证工程安全。Taking an electric power tunnel project in Beijing as an example,the technical scheme of how to ensure the safety of the near high voltage iron tower in the tunnel excavation was studied,three schemes of strengthening the initial lining structure of tunnel,sleeve valve pipe tracking grouting and isolation pile protection can be selected,the above schemes were analyzed and introduced in detail.Finally,the scheme to strengthen initial lining structure of tunnel combined with the on-site protection of isolation pile was adopted.Through the use of PLAXIS 2D finite element software,the influence of tunnel excavation on the foundation of high voltage iron tower was analyzed after installation of the isolation pile.Combining with the on-site monitoring data,it is verified that the adopted technical scheme can meet the needs of the project and ensure the safety of the project.

关 键 词：电力隧道 高压铁塔 初衬结构 隔离桩 袖阀管 注浆 

分 类 号：TU354[建筑科学—结构工程] TU93