The Rock Drill Adapter (RDA) allows Akkerman pilot tube systems to accurately drill in rock formations using TriHawk® steering head technology that is commercially available. The RDA is designed to use Akkerman’s existing GBM guidance system or the contractor can choose to operate with a Sonde housing for extreme conditions.
Features
- The Rock Drill Adapter features a bolt-less, square drive spline to accept TriHawk® I, III, IV, and V steering heads.
- Suitable for densely compacted soils, soft rock, claystone, stone, limestone, and shale.
- A small annulus is cut around the pilot tubes requiring minimal amount of lubricant flushing suitable for Akkerman lubrication pumps.
- Easily adapted to all Akkerman GBM systems regardless of date of manufacture.
- Low thrust pressures required for tool engagement. All new Akkerman GBM systems come equipped with an RDA jacking pressure control assembly for smooth operation.
RDA Drill Adapter
TriHawk® I
TriHawk® III
TriHawk® IV
TriHawk® V
Specifications
| Model | Ground | Bit Type | Cut Diameter |
|---|---|---|---|
| TriHawk® I | Compacted Soils, Cobble, Soft Rock | Embedded Carbide & Replaceable Bullet Teeth | 5.12 in |
| TriHawk® III | Hard Soil, Soft Rock | Replaceable Bullet Teeth w/ Hard Facing | 5.5 in |
| TriHawk® IV | Till, Cobble, Soft Rock | Embedded Carbide | 5.5 in |
| TriHawk® V | Gravel, Loose Fill, Dense Soil | Embedded Carbide | 4.8 in |
Testimonials
Mextune / Group S de RL de CV
In recent years we have acquired different spare parts for our Akkerman brand TBMs, which have allowed us to have the equipment ready. We have used our tunnel boring machines in 2 emergency projects recently:
- Completion of the construction of the El Valle Collector, with reinforced concrete pipe of 2.13 meters inside diameter for the municipality of Tlajomullo de Zuniga Jalisco.
- Construction of the Jamapa Collector in the municipality of Ecatepec de Morelos (New construction). With 1.22m RCP pipe.
