Complex geological photovoltaic pile foundation construction is a difficult point in photovoltaic projects. Scenarios such as swamps, mountains, and permafrost have extremely high requirements for equipment and processes. This article analyzes the equipment selection and schemes for these three types of scenarios to help cope with the challenges of complex geological photovoltaic pile foundation construction.

1. Complex Geological photovoltaic pile Foundation Construction in Swamps:Settlement Control

Swamps have low bearing capacity, and complex geological photovoltaic pile foundation construction needs to prevent machine trapping and control settlement.

(1) Equipment Selection: Choose anti-trapping equipment with a track ground pressure of ≤0.15MPa and a track shoe of ≥350mm (such as Hengwang HWL series), and control the total weight of the equipment within 8 tons.

(2) Construction Scheme: Lay geogrid + gravel cushion; use the "jump driving method"; enable the hydraulic shock absorption function (Hengwang's equipment hydraulic components are strictly assembled, with stable shock absorption).

(3) Acceptance: Measure the settlement of every 50 piles (≤5mm) to ensure the stability of complex geological photovoltaic pile foundation construction.

2. Complex Geological Photovoltaic Pile Foundation Construction in Mountains: Improve Flexibility and Safety

Mountains have large slopes, and complex geological photovoltaic pile foundation construction needs to solve problems such as difficult equipment movement and low pile position alignment accuracy.

(1) Equipment Selection: Modular equipment with 360° frame rotation and ±5° guide frame inclination adjustment (all Hengwang models meet this), and the track can be retracted to within 2 meters in narrow slope sections.

(2) Construction Scheme: Use drones to survey the terrain in advance and plan the equipment walking route; build temporary ramps in areas with a slope >15°; adopt the "segmental anchoring method" to fix the equipment with hydraulic outriggers every 10 meters of movement before calibrating the pile position; use the remote control function of the equipment (supported by some Hengwang models) to ensure safety.

(3) Efficiency: Hengwang HWQK350 power head realizes quick switching between drilling and piling at the same machine position, reducing the frequency of equipment movement.

3. Complex Geological Photovoltaic Pile Foundation Construction in Permafrost Areas: Protect Hydraulic Systems and Ensure Low-Temperature Operation 

Permafrost areas have seasonal freeze-thaw cycles, and low temperatures (-20℃ to -5℃) will increase the viscosity of equipment hydraulic oil and seals. Complex geological photovoltaic pile foundation construction needs to focus on protecting the hydraulic system.

(1) Equipment Selection: The hydraulic system of photovoltaic pile foundation equipment needs to undergo low-temperature adaptation transformation. Use -35℃ anti-freezing hydraulic oil and low-temperature resistant rubber seals (Hengwang's equipment has passed -40℃ low-temperature tests). The engine needs to be equipped with a preheating device to ensure smooth startup in low-temperature environments.

(2) Construction Scheme: Choose to construct during the frozen period of permafrost (winter) when the foundation bearing capacity is high to reduce the impact of thaw settlement; preheat hydraulic pipelines with a hot air gun before piling, and idle for 5 minutes after startup before operation; discharge water from the hydraulic system after daily construction to avoid freezing and damaging components at night.

(3) Quality Control: The pile embedding depth must exceed the active layer of permafrost (usually ≥1.5 meters), and the maximum single depth of the equipment should be more than 4 meters (such as Hengwang HWL400R can drive 4-meter high piles) to ensure the long-term stability of complex geological photovoltaic pile foundation construction.

General Principles for Complex Geological Photovoltaic Pile Foundation Construction 

(1) Priority to Geological Survey: Before construction, clarify the soil layer distribution through drilling. For complex areas containing gravel and rock formations, equip with spiral drills in advance (Hengwang's equipment has a maximum spiral drilling diameter of 500mm).

(2) Equipment Combination Strategy: When a single equipment is difficult to adapt to all scenarios, a combination of "impact type + spiral type" equipment can be adopted. Use impact type for quick construction in soft soil layers and switch to spiral type for breaking in hard rock sections.

(3) Dynamic Monitoring Mechanism: Install inclination sensors and pressure sensors on the equipment to monitor construction parameters in real-time, and automatically alarm when exceeding the threshold to avoid safety accidents in complex geological photovoltaic pile foundation construction.

Hengwang Group's Photovoltaic Pile Drivers: A Preferred Choice for Complex Geological Photovoltaic Pile Foundation Construction

Hengwang Group has been engaged in the research and development of photovoltaic pile drivers for more than ten years, with products covering series from HWL300R to HWL600R, specially designed for complex geological photovoltaic pile foundation construction. Its equipment has three core advantages:

(1) trong Adaptability: 350mm track shoe width, 360° frame rotation, ±5° guide rail inclination adjustment, suitable for complex scenarios such as swamps, mountains, and permafrost;

(2) High Reliability: The hydraulic system uses high-quality components, has passed international certifications such as CE and TUV, and has a low failure rate in low-temperature and high-humidity environments;

(3) Full-Cycle Service: Provides a "four-dimensional integration" service (product experience, training, maintenance, accessories) with service points in 125 countries around the world to ensure the smooth progress of complex geological photovoltaic pile foundation construction.

Whether you are facing challenges in swamps, mountains, or permafrost, Hengwang's photovoltaic pile drivers can provide customized solutions.

Leave your project address and geological overview now to obtain an exclusive complex geological photovoltaic pile foundation construction scheme, and Hengwang's technical team will respond within 24 hours! For complex geological photovoltaic pile foundation construction, Hengwang helps you advance efficiently.