脆弱生态环境下的线路掏挖式基础施工  

Digging Foundation Construction of the Transmission Lines in Vulnerable Environment

作　　者：陶瑾 孙三群 肖建宝 TAO Jin;SUN Sanqun;XIAO Jianbao(State Grid Zhejiang Power Transmission ＆ Transformation Engineering Co.,Ltd.,Hangzhou 310016,China)

机构地区：[1]国网浙江省送变电工程有限公司,杭州310016

出　　处：《浙江电力》2018年第11期101-105,共5页Zhejiang Electric Power

摘　　要：掏挖式基础是将钢筋骨架和混凝土直接浇筑于利用机械或人工在天然土中直接挖(钻)成的基坑内的基础。为保护黄土高原脆弱的生态环境,在该地区多采用掏挖式基础作为输电线路的基础形式。结合昌吉—吉泉±1 100 kV特高压直流输电线路甘8标段铁塔基础工程,从黄土高原的地质条件入手,介绍了在弱环境下掏挖式基础的施工方案和技术难点,提出了相应的保护地质环境的措施,并对施工效果进行了简要评价。结果表明,施工中所采取的环境保护措施取得了良好的效果,基本未扰动地表土。The digging foundation is constructed by placing frame of steel reinforcement and concrete in foundation pit mechanically or manually dug in natural earth. In order to protect the vulnerable ecological environment of loess plateau, the digging foundation is largely adopted in this region for power transmission. In accordance to tower foundation project of Gansu-8 section of Changji-Jiquan ±1 100 kV UHV DC transmission lines, the paper introduces construction scheme and technical difficulties of digging foundation in vulnerable environment and proposes geological environment protection measures; besides, it discusses the construction effect. The result shows that the adopted environmental protection measure achieves favorable effect and does not disturb surface soil.

关 键 词：输电线路 铁塔 脆弱生态环境 掏挖式基础 地质保护措施 

分 类 号：TM752[电气工程—电力系统及自动化]