Pilot hole diameter(mm):Φ311
Reaming diameter(mm):4000
Drilling Angle(°):60°-90°
Drilling depth(m):500
Weight(kg):25000±200
Drilling Main Unit Working size(mm)：(7030±50) × (2950±25) × (3716±30)
AT-4000 column integral raise boring rig is a top-level raise boring construction equipment for ultra-deep, ultra-large aperture and extreme geological conditions. It adopts column-integral composite frame design and combines raise boring technology (pilot hole + hole expansion). It is specially designed for extremely hard rock, high ground stress and high-precision penetration scenes. It is suitable for major national projects such as deep mines, nuclear energy projects and ultra-deep shafts.
AT-4000L column is made of low-alloy high-strength steel (yield strength ≥960 MPa), which is integrally welded and anchored to the foundation, and the bending stiffness is increased by 200%; the main engine, power station, and control cabin are divided into ≤25-ton modules to adapt to underground transportation restrictions。
The counterweight at the tail of the drill rig can be adjusted according to the drilling depth to offset the deflection torque caused by the weight of the drill pipe;
In addition, the superposition of 20-50Hz high-frequency shock waves can increase the hard rock crushing efficiency by 35%.
Our AT-4000L raise boring machine adopts high torque and high thrust design, which significantly improves the drilling speed under hard rock conditions and can effectively shorten your construction period. In addition, the use of automatic rod changing technology reduces manual intervention and has strong continuous operation capability, which can greatly save your construction costs.
The column is made of low-alloy high-strength steel (yield strength ≥ 960 MPa). After integral welding, it is anchored to the foundation through hydraulic anchor rods, and the bending stiffness is increased by 200%; the upper and lower power heads are driven synchronously to offset the energy loss in the torque transmission of the drill rod and reduce the risk of deflection.
With waterproof + anti-corrosion coating, it can work normally even in a high humidity environment.
If you are looking for raise boring machine or parts for your project,Looking is your first choice.Send us your detailed requirement and get an instant quota now.
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Whatsapp: +86-17608455805
Email: lk-sales02@lkmining.com
Address: Building 1001001,LangLi District, Changsha City,Hunan,CN
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