输电线路开挖回填基础试验及质量检测研究

Testing and Quality Inspection research of Backfill Foundation in Transmission Line Engineering

输电线路开挖回填类基础采用土重法进行上拔稳定计算,土体重度及上拔角等关键设计参数与回填土质量密切相关,直接影响上拔承载性能。目前回填土质量控制及检测方法无明确标准,通过在风积沙、粉土地质条件下开展开挖类装配式基础的承载性能现场试验与土工试验,提出开挖回填类基础的施工质量控制标准,为其安全稳定运行提供技术支撑。

The earth weight method is used to calculate the uplift stability of backfill foundation in transmission line engineering.The calculation parameters such as soil weight and uplift angle are closely related to the quality of backfill,which directly affects the uplift bearing capacity.At present,there is no definite standard for backfill detection method and quality control.In geological conditions such as Aeolian sand and silty soil,the uplift bearing capacity field tests to assembly foundation and the geotechnical tests are carried out.The quality control standards to backfill foundation are discussed to provide technical support for its safe and stable operation.