Horizontal directional drilling
The company uses modern technologies in the production of construction and installation works, including the method of horizontal directional drilling (HDD) for trenchless laying of communications.
The main distinguishing feature of HDD technology is the ability to change the direction of drilling during the process, which allows wells to be drilled along a given trajectory, bypassing underground obstacles and exiting at a given point. It uses a modern location system.
The use of various specialized drilling tools allows for laying in geotechnical conditions typical for the Republic of Belarus, including in winter conditions.
Ditch Witch JT3020 All Terrain®
The horizontal length of underground communications is up to 300 m.
The rig is capable of operating in two modes: drilling soft soils (the rig has the characteristics and capabilities of the JT30 installation) and drilling rocky soils (including monolithic and fragmented rocks, crushed stone, pebbles).
| Dimensions | |
|---|---|
| Length | 5.57 m |
| Width | 2 m |
| Height | 2.91 m |
| Weight with full cassette | 9625 kg |
| Carriage mounting angles | 10-16 ° |
| Entry angle | 19.4 ° |
| Departure angle | 17.7 ° |
| Cassette capacity | 35 rods |
| Weight of cassette with rods | 2084 kg |
| Drill rod | |
| Length | 2.85 m |
| Outer rod connection diameter | 83 mm |
| Outer rod body diameter | 57 mm |
| Minimum bending radius | 53 m |
| Weight with inner bar | 45 Kg |
| Performance characteristics | |
| Inner spindle (drill bit) rotation speed | 400 rpm |
| External spindle rotation speed (mechanical motor housing, expander) | 225 rpm |
| Inner spindle torque | 1085 Nm |
| Outside spindle torque | 5423 Nm |
| Carriage speed | 37 m / min |
| Tightening force | 134 kN |
| Punching force | |
| in rock drilling mode | 73 kN |
| in the mode of drilling soft soil | 110 kN |
| Engine | |
| CUMMINS QSB4.5 direct injection four-cylinder water-cooled turbodiesel (Tier III) | |
| Volume | 4.5 l |
| Power at 2400 rpm | 156 h.p. |
| Setting the speed limiter | 2300 rpm |
| Drilling fluid supply system | |
| Performance | 0-189 l / min |
| Maximum pressure | 103 bar |
| Volumes of filled liquids | |
| Hydraulic oil tank | 102 l |
| Fuel tank | 159 l |
Watch a short video of how the HDD installation works:
Ditch Witch JT520
The horizontal length of underground utilities is up to 80 m.
The Ditch Witch JT520 ultra-compact horizontal directional drilling rig is designed for trenchless installation of utility lines and cases for communication cables over short distances.
| Dimensions | |
|---|---|
| Length | 2.97 m |
| Width | 0.9 m |
| Height | 1.7 m |
| Bec with full boom | 1352 kg |
| Drill rods | |
| Length | 1.5 m |
| Connection diameter | 44.5 mm |
| Body diameter | 28 mm |
| Minimum bending radius | 21.3 m |
| The weight | 7.25 kg |
| Performance characteristics | |
| Maximum spindle speed | 195 rpm |
| Spindle torque | 678 Nm |
| Pushing force | 2000 kg |
| Thrust | 2220 kg |
| Pilot hole diameter | 63 mm |
| Maximum expansion diameter | 102 mm |
| Ground travel speed | 2.46 km / h |
| Engine | |
| Three-cylinder water-cooled diesel engine Kubota D1105B-1 | |
| Volume | 1.12 l |
| Power at 3000 rpm | 25 h.p. |
| Drilling fluid supply system (built-in) | |
| Performance | 0-18.9 l / min |
| Pressure | 34.5 bar |
| Hydraulic system | |
| Performance | 95 l / min |
| Installing the safety valve | 190 atm |
| Volumes of filled liquids | |
| Hydraulic reservoir | 30 l |
| Fuel tank | 38 l |
| Engine lubrication system | 4 l |
