Recently, XCMG rotary drilling rigs, hydraulic diaphragm wall grabs, double-wheel trench cutters and other complete sets of foundation engineering construction equipment were assembled and deployed to participate in the construction of the Nansha-Zhuhai (Zhongshan) Intercity Railway Wanzingsha-Xingzhong Section (hereinafter referred to as the "Nanzhong Intercity") project, helping Zhongshan enter a new era of rail transit in the Greater Bay Area.

The project route has a total length of 47.6 km, and the rock strata are mainly migmatitic granite with hardness of 100-300 MPa. To ensure smooth construction, the project team deployed XCMG double-wheel trench cutters, hydraulic diaphragm wall grabs, and rotary drilling rigs according to the on-site geological conditions to carry out construction in sand layers and rock-entry sections.

For hard rock construction, the XCMG XTC120 double-wheel trench cutter has become the customer's **. The XTC120 double-wheel trench cutter adopts a fully guided third-generation heavy-duty cutter frame and a third-generation drive unit, with torque increased by 10%, adapting to high-torque hard rock milling.

As a star product among piling equipment, this model once achieved a vertical accuracy of 1/1000 at the Shanghai North Passage. Its 80 t-class double winch structure is equipped with 36 mm anti-rotation special-shaped wire ropes, providing strong pull-out force and creating the necessary conditions for efficient construction.

Faced with a series of problems such as difficult trenching in silty soil strata, difficult control of trench wall verticality, and difficult lifting of reinforcement cages, XCMG's complete sets of foundation construction machinery leveraged their respective strengths. XCMG rotary drilling rigs and XG85S hydraulic diaphragm wall grabs were responsible for guide-hole drilling and grabbing. The deepest trench at the project is about 48.5 m, with an average trench depth of about 46.5 m, ensuring efficient construction with superior quality.

Unstoppable and invincible. The fleet of XCMG rotary drilling rigs roared as they drilled, flexibly adjusting the power head mode according to soil and rock layers, and quickly switching between functions such as cylinder pressurization and winch pressurization. The rock-entry mode offers high construction efficiency, and the whole machine works reliably and stably, with construction speed and precision that are impressive!

Guide-hole drilling, grabbing, and milling—complete sets of piling machinery drill into hard rock and mill trench walls. XCMG's complete equipment will continue to support key global transportation engineering projects, creating value with high quality and considerate service.