某变电站挡土墙问题的分析与处理

Analysis and Treatment of Substation Retaining Wall Problems

华北地区某220kV变电站在投入运行两年后,由于存在施工质量问题,挡墙上的围墙出现裂缝,影响变电站的安全运行。针对尽量减少对变电站正常运行的影响和减少占地的要求,提出了完全拆除重建、加扶壁支护及外加挡墙3种解决方案。经过详细分析比较,并结合站址地质特点,最终采用了外加挡墙的方案。该方案实施后,工程实践证明效果良好,并可为今后类似工程提供一定的借鉴。

Due to the construction quality problem, there were cracks on the retaining walls of a 220kV Substation in North China after being put into operation two years, and the safe operation of the Substation is affected. To minimize the impact on the normal operation and reduce the requirements of farmland, 3 solutions including complete demolition and reconstruction, plus buttresses supporting and plus retaining wall are presented. Combining the geological features, the detail analysis and comparison are carried out, and the plus retaining wall is finally adopted. The implementation of this program has good results, which will provide a reference to similar projects in the future.