山区线路承压水地基基础治理及沉降观测研究

Research on Ground Treatment and Settlement Observation of Confined Water Foundation for Transmission Line in Mountainous Area

山区输电线路由于受到交通条件限制,对承压水地基的应对措施有限,且一旦出现基础偏移沉降等问题后,治理难度很大,严重时甚至会影响到输电线路的安全运行。文中结合工程实例,通过数值模拟对山区输电线路承压水地基采用直柱大板基础出现的偏移沉降问题进行了分析和治理,并提出了有效的治理措施;通过2年的长期持续观测数据验证了所提出的治理方法是有效可靠的,可以为今后的工程实践提供指导和借鉴。

Due to the limitation of traffic conditions,the countermeasures for confined water foundation of transmission lines in mountainous areas are limited,and once the problems such as foundation deflection and settlement occur,it is very difficult to deal with,and even will affect the safe operation of transmission lines.Combined with an engineering example,the deflection and settlement problem of straight-column big-plate foundation for confined water foundation of transmission line in mountainous area is analyzed and renovated through numerical simulation,and the treatment effect is verified by two years of long-term continuous observation data.The verification results show that the proposed treatment method is effective and reliable,which can provide a guidance for engineering practice.