中国电力 ›› 2012, Vol. 45 ›› Issue (12): 34-41.DOI: 10.11930/j.issn.1004-9649.2012.12.34.7

• 电网 • 上一篇    下一篇

高海拔多年冻土区基础工程主要工程问题及对策

严福章1, 李鹏2, 程东幸3   

  1. 1. 国网北京经济技术研究院,北京 100052;
    2. 国家电网公司,北京 100031;
    3. 西北电力设计院,陕西 西安 710065
  • 收稿日期:2012-09-05 出版日期:2012-12-25 发布日期:2016-02-04
  • 作者简介:严福章(1963—),男,湖北孝感人,博士,高级工程师,主要从事电力工程地质勘察与研究工作。

Principal Problems and Solutions of the Foundation Engineering in the High-Attitude Permafrost Region

YAN Fu-zhang1, LI Peng2, CHENG Dong-xin3   

  1. 1. State Power Economic Research Institute, Beijing 100052, China;
    2. State Grid Corporation of China, Beijing 100031, China;
    3. Northwest Electric Power Institute, Xi’an 710065, China
  • Received:2012-09-05 Online:2012-12-25 Published:2016-02-04

摘要: 青藏直流联网工程是目前世界上最高海拔、高寒地区建设的最大规模的输电工程,工程挑战了沿线海拔最高、穿越多年冻土区距离最长“两个世界之最”。由于高原多年冻土具有热稳定性差、地下冰含量丰富、对气候变暖反应极敏感以及水热活动强烈等特性,冻土基础施工面临很多难题,包括冻土基础选型与设计问题、施工过程中多年冻土的保护问题和冻土基础的长期稳定问题等。在研究多年冻土区工程地质条件和主要工程地质问题的基础上,对多年冻土区杆塔基础的主要工程问题进行了系统分析,介绍了工程建设过程中针对这些问题所采取的主要对策。

关键词: 多年冻土, 输电线路, 基础工程, 工程问题, 对策

Abstract: Qinghai-Tibet direct-current interconnection project is the largest transmission project constructed up to now in the paramos region of highest attitude in the world. It is also the longest project that traverses the permafrost region. The permafrost,characterized by being poor in thermal stability, rich in underground ice, very sensitive to the climate warming, and strong in water-thermal activity, causes great challenges to the tower foundation construction, which include tower foundation type selection and design, permafrost protection in the process of foundation construction and long-term foundation stability. On the basis of a study of the engineering geological conditions and principal engineering geological problems of the project, a systematic analysis is carried out on the principal engineering problems of transmission tower foundations in the permafrost region and an introduction is made to the main solutions to the problems in the process of project construction.

Key words: permafrost, transmission lines, foundation engineering, engineering problems, solutions

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