When the construction of the world’s most beautiful airport encounters working conditions challenges, experts in the field of basic construction come to help! Recently, at the construction site of T4 hub station at Shenzhen Bao’an International Airport, two Zoomlion ZRT210H fully rotary drilling rigs are being intensively constructed. Faced with complex geological structures and difficult working conditions such as the drying of poured concrete, they have demonstrated the expert strength in the field of foundation construction, efficiently assisting in the rapid progress of the project.
Located on the east bank of the Pearl River Estuary, Shenzhen Bao’an International Airport is a 4F civil transport airport, one of China’s twelve major trunk airports, one of the world’s top 100 airports, and the first of the world’s ten most beautiful airports. The T4 hub station is located in the planned expansion and reclamation area on the north side of the T4 terminal building at Shenzhen Bao’an International Airport, connecting the airport with multiple intercity rail transit systems.
Pile foundation construction, as a crucial link in the foundation construction of the T4 hub station project at Bao’an International Airport, is difficult due to the complex geological conditions of the construction site, which is an expansion and reclamation area; Moreover, due to the pandemic, the work was suspended for a period of time, causing the poured concrete to dry out and rendering the originally planned soft bite construction method unfeasible.
Faced with the failure of traditional rotary drilling rigs to drive down the casing, and now the dilemma of the pipe rolling machine being unable to follow up with the casing, the construction party has switched to the hard bite method and introduced two Zoomlion ZRT210H fully rotary drilling rigs known for their strong power and adaptability to working conditions.
Cao Chao, a research engineer at Zoomlion, said, “The construction of a full rotary drilling rig has technical advantages such as strong geological adaptability, flexible construction, high verticality of pile foundations, good anti-seepage effect, and reliable pile quality. Our Zoomlion ZRT210H full casing full rotary drilling rig is one of the best among them. The ZRT210H has a strong casing rotation torque and is highly adaptable to different geological conditions, making it very suitable for the special working conditions of this project
It is reported that the model also adopts a reinforced wedge-shaped main clamping system, which significantly improves the pressure holding capacity; During the drilling process, steel casing is used to protect the wall, which has the characteristics of good pile quality, no mud pollution, green environmental protection, and reduced concrete filling coefficient, resulting in high overall construction efficiency; And with the new generation remote control system, the operation is simpler, more flexible, and safer.
It is reported that Zoomlion’s fully rotary drilling rig has demonstrated outstanding strength in urban rail transit, bridge and infrastructure projects such as Chengdu Metro Line 13, Rizhao “Yellow Sea Eye”, and Guangxi Peisen Liujiang Extra Large Bridge, and has received unanimous praise. It is known as the “expert” in solving difficult working conditions in the infrastructure construction industry.
