500kV鹏深线杆塔基础边坡稳定性综合评估研究

Study on Comprehensive Evaluation of Tower Foundation and Slope Stability for 500kV Peng-Sheng Transmission Line

输电线路杆塔基础边坡众多,如何对不同危险程度的塔基边坡进行分类,并采取对应的运维策略成了关注的重点。文章以500kV鹏深线为例,通过杆塔倾斜监测、工程地质调查、地基承载力复核、稳定性计算四个方面对杆塔基础边坡进行稳定性综合评估。根据评估结果把杆塔基础边坡危险程度分成Ⅰ、Ⅱ、Ⅲ、Ⅳ四个等级,其中Ⅰ级危险程度最高,Ⅳ级危险程度最低,并且根据不同的危险等级提出相应的运维策略。对于需要采取治理措施的塔基,需要提出简要治理方案和预估费用,为其他线路杆塔稳定性的综合评估提供了很好的借鉴意义。

There are numerous foundation and slopes of power transmission line towers, how to classify the tower foundation and slopes with different risk levels and take corresponding operation and maintenance strategies have become the focus of attention. In this paper, a comprehensive evaluation of the stability of the tower foundation and slope is carried out by the four aspects of the 500kV P-S line, including the tower tilt monitoring, the engineering geological survey, the foundation bearing capacity rechecking and the stability calculation. According to the evaluation results, the risk degree of the foundation and slopes of the tower is divided into four grades, including I, II, III and IV, among which the grade I is the most dangerous and the level of grade IV is the lowest, and the corresponding operation and maintenance strategies are put forward according to the different risk grades. For the tower base which needs to take the control measures, the brief treatment plan and the estimated cost should be put forward, which provides a good reference for the comprehensive evaluation of the stability of other transmission lines.