In the construction of a photovoltaic power station at an altitude of 4500 meters on the Qinghai Tibet Plateau, the low-temperature pile driving equipment developed by the construction team successfully overcame the problem of frozen soil construction. This equipment uses cold resistant hydraulic oil and heated drill bits, which can operate continuously in an environment of -35 ℃, with a drilling speed of 0.8 meters per minute, which is three times higher than conventional equipment.

The project technical director introduced that the frozen soil layer on the plateau has a high ice content, and traditional vibration pile driving can easily lead to soil melting and collapse. The new equipment uses pulse impact technology to reduce heat conduction while maintaining drilling efficiency, and is equipped with a real-time monitoring system to ensure the stability of the pile foundation. At present, the project has completed the construction of 23000 pile foundations. After testing, the pull-out resistance of the piles has reached 120% of the design value, providing a reliable solution for photovoltaic development in high-altitude regions.