Building PV power plants in mountainous terrain poses unique challenges due to rugged topography and varying soil quality. Ensuring stability in ground mounting structures is critical for project success. Any tilting or sinking of solar panels can reduce power generation efficiency and may introduce safety risks, making it essential to reinforce piling stability.
A thorough geotechnical survey is the basis for stable piling. During the early survey, assessing ground hardness, geological structure, soil properties, and water table levels helps inform pile foundation design and type selection. This ensures both the load-bearing capacity and stability of the foundation.
Based on survey results and soil characteristics, the most suitable pile foundation type and specifications can be determined. Given the varied terrain of mountainous areas, the choice of piling must consider slope gradient, soil type, and other factors. For instance, on steep slopes, deeper piles or specialized anchoring methods might be necessary to maintain stability during adverse weather. High-strength, corrosion-resistant materials, such as hot-dip galvanized solar structural steel piles, offer excellent load-bearing capacity and can significantly extend pile life.
Before construction, it is essential to thoroughly clear and level the site. High-precision surveying instruments should be used to mark pile locations accurately. Based on geotechnical survey findings, the correct piling angle should be set to ensure pile verticality, depth, and stability.
During piling, obstacles like hard rock may be encountered. Drilling can be used to penetrate obstacles before piling. After driving piles, reinforcement may be necessary. Two common methods are: a. Concrete placement: Pouring concrete around the upper part of the pile to secure it firmly to the ground. b. Soil Compaction: Applying external force to compress the soil around the pile, enhancing its stability through soil-pile interlocking. To ensure stability, it’s also essential to:
1. Enhance Construction Management: Ensure that construction teams follow operational standards strictly.
2. Regular Inspection and Maintenance: Check and maintain piles periodically to identify and address potential safety issues early.
3. Establish a Monitoring System: Implement a comprehensive monitoring system for real-time monitoring and early warnings of the power plant’s operational status.
In summary, the stability of piling in mountainous PV power plants is directly linked to the plant’s safe and stable operation. Through careful geotechnical survey, appropriate pile selection, standardized construction, and reinforcement measures, pile stability and load-bearing capacity can be effectively increased, promote the development for the long-term success of mountainous photovoltaic power plants.
