XCMG XR800E helped Evergrande Shenzhen Bay Project, with achievement of more than 30 holes, including 3 holes with a diameter of 3m (118in) and a depth of 70m (230ft), which has greatly shortened the construction period.
Evergrande Group's new headquarters building is located in Shenzhen Bay Super Headquarters Base, with a total construction area of 343,000 square meters, a building height of 393.9m (1,292ft), 71 floors above ground, 6 floors underground, and a panoramic view of the seascape of Shenzhen Bay, which is known as the "pinnacle work" created by Evergrande.
A milestone product of global piling machines, XCMG's XR800E assists Evergrande Super Headquarters with the world's first drill. The maximum drilling diameter is 4.6m (181in), the maximum drilling depth is 150m (492ft), it is a milestone product of the global pile driver, designed for the construction of ultra-deep, super-large diameter, hard rock pile foundations of large bridges such as cross-river and cross-sea projects. Besides its scale and status, the foundation construction also reflects the status and scale of Evergrande Center Project. In comparison to a general housing pile, the engineering pile is large in diameter and extremely deep, with the rock depth exceeding 40m (131ft), which is equivalent to 14 stories deep into the ground! With such a difficult pile diameter requirement, foundation construction has become a difficult problem, not to mention ensuring the verticality of the pile diameter. But for the world's largest tonnage rotary drilling rig, it's a close contest!
In order to drill through ultra-deep and super-strong rock condition, the power output torque of a regular rotary drilling rig is 120~400kN·m (88,440-294,800lb-ft), but the XCMG XR800E has a working torque of 792kN*m (583,700lf-ft), about twice as high as that of an ordinary rotary drilling rig. In this construction method, the drilling is graded, and step by step. The super powerful torque is like Popeye, and equip with roller bit bucket, the core of the hard rock can be directly removed in one step. The height of the core stone pier can be up to one person high, which greatly improves the efficiency of construction and further reduces construction time.
The construction of XCMG XR800E, compared with the traditional process operation method, reflects three characteristics.
* High quality: in terms of verticality of construction, XR800E can guarantee a vertical deviation of within 1%, which is difficult to achieve with traditional reverse circulation drilling rigs.
* High efficiency: it only took 7days for ultra-deep piles with a diameter of 3m (10ft). The construction efficiency is 4 times higher than traditional technology.
* High effective: drilling with XR800E, it can prolong drilling tool service life, less mud, economical and environmental friendly, and complete project on time, which is difficult to achieve in traditional reverse circulation drilling rig construction.
XCMG XR800E was awarded "China Construction Machinery Annual Product TOP50 Technology Innovation Gold Award" for its unique large-tonnage innovation technology.
XCMG rotary drilling rig is committed to providing more solutions for underground construction, from the frozen plateau of the Qinghai-Tibet Line to the winter construction of the Harbin-Dalian Line, from the rock construction of the Shanghai-Kunming Line to the large aperture, deep pile hole bridge pile and real estate pile. In highways, high-speed railways, bridges, housing construction, municipal construction, and other fields, XCMG rotary drilling rig can provide more solutions.
