As National Energy Conservation Week approaches, the Hechi Project Department of China Railway Sixth Group Tianjin Company has closely followed the theme of "A New Starting Point for Energy Conservation, A Low-Carbon Future," relying on intelligent means and refined management to explore a replicable and promotable green, low-carbon construction scheme on the front line of pile foundation construction, practicing the responsibility of a central state-owned enterprise through concrete actions.

At the pile foundation construction site of the Gongtie Jointly Built Grand Bridge, a controlling project of the Hechi Railway, facing complex geological conditions, the project department has integrated the concept of "energy conservation and consumption reduction" into every process from the outset. In traditional construction, fluid-plastic silt layers and thick sand layers are highly prone to hole collapse, leading to the waste of mud and resources. By adopting a high-quality mud circulation wall-protection process combined with D-type drill bits for staged drilling, the project has achieved on-site solid-liquid separation and recycling of mud, greatly reducing the volume of waste slurry and cutting carbon emissions from outward transport and disposal at the source.

To precisely control construction energy consumption, the project department has abandoned the extensive operation model and fully applied intelligent equipment. In the construction of CFG piles (cement-fly ash-gravel piles), the technical team has promoted a pile foundation informatization management system centered on BeiDou positioning. This system replaces traditional manual setting-out and experience-based operations. By precisely controlling the drill pipe posture and verticality, it not only improves pile quality but also, through "one-time excellence," eliminates the energy waste of repeated drilling caused by deviated or collapsed holes. In addition, high-energy-consumption lamps have been phased out across the construction site, and sound-light sensing and LED energy-saving lighting systems have been installed in the work areas, ensuring nighttime construction safety while eliminating ineffective lighting losses.

Not only on the construction front line, but the "micro-innovations" at the project camp also highlight the details empowered by technology. Drawing on advanced energy-saving management experience in the industry, the project department has promoted the use of "air-conditioner companion" smart control plugs and time-control devices in the temporary facilities area, achieving "machines rest when people leave" and effectively reducing electricity costs in the living area. At the same time, the camp uses solar street lights and air-source water heaters to build a low-carbon living circle, tightening the energy-saving "cost valve" from the smallest details.

Currently, in the opening year of the 15th Five-Year Plan, the state has explicitly proposed accelerating industrial "carbon reduction and green enhancement," deepening the implementation of energy-saving and carbon-reduction transformation in key industries, and vigorously developing green, low-carbon technologies and industries. As a vanguard in the infrastructure field, the Hechi Project Department of China Railway Sixth Group Tianjin Company is taking pile foundation construction as a starting point and, through the deep integration of digital-intelligent technology and traditional processes, continuously building a green construction system. This is not only a transformation of construction methods but also a vivid practice of a central state-owned enterprise fulfilling its mission of "energy conservation and carbon reduction, green development" in building a country with strong transportation.

(Source: Workers' Daily)