On July 17, as China's self-developed full-face hard rock tunnel boring machine "Bay Area Light" slowly emerged, the Shenzhen Baishiling Tunnel—a dedicated mountain tunnel for the Guangdong-Hong Kong-Macao Greater Bay Area natural gas pipeline constructed by China Railway 18th Bureau Group—was fully holed through, laying the foundation for subsequent natural gas pipeline installation.

The Baishiling natural gas pipeline adjustment project is a key project in building the comprehensive national science center of the Guangdong-Hong Kong-Macao Greater Bay Area, with a total length of 6.35 kilometers. Among them, the Baishiling Tunnel has a total length of 6.1 kilometers and is a key control project for the entire line.

According to reports, the Baishiling Tunnel passes through 8 fault fracture zones. The tunnel rock strength is high, there are many fault structural zones, and water inflow is large, making construction highly difficult. To ensure construction safety, the project team adopted a full-face hard rock tunnel boring machine with a diameter of 5.33 meters for construction, effectively reducing rock disturbance during tunnel excavation, improving construction efficiency and quality, and ensuring the safe and smooth holing-through of the tunnel.

It is reported that after the Baishiling natural gas pipeline adjustment project is completed, it will further improve the major energy corridor of the Guangdong-Hong Kong-Macao Greater Bay Area and is of great significance for ensuring regional natural gas energy supply, helping build a clean, low-carbon, safe and efficient energy system, and promoting high-quality regional economic and social development.