Fluid assisted horizontal directional
drilling system (HDD)
·
For bores in lengths up to 50 mtrs and
backream diameters up to ø 260 mm
·
With ADBS (automatic drilling and
backreaming system)
·
Special double chain drive, no loss of
power at low speed.
·
Dimensions of the starting
pit: L = 1.30 mtrs, W = 1.30
mtrs, D = 0.3 mtrs lower then the bore
axle
·
Drill rods, 0.5 mtrs long with turning
radius R = 15 mtrs
·
The mixing module mixes
Bentonite through the low pressure
injector into the drilling fluid. Thereby the
TERRA MINI-JET becomes a highly sophisticated HDD
machine.
·
Required hydraulic power: 40 – 60
ltrs/min at 175 – 235 bar. We recommend the
hydraulic power unit MINI-JET or an
excavator.
TERRA
MINI-JET
Technical Data Sheet
Pit cradle
TERRA No.: 1930.4002.00
maximum bore length *:
50
m
weight:
280
kg
maximum backream Ø* :
260
mm
length:
1.11
m
torque:
1400
Nm
width:
0.60
m
pullback force (backreaming):
80 / 8
kN / tons
height:
1.15
m
at 175 bar (continous operation)
60
kN
at 235 bar (intermedium)
80
kN
thrust force (drilling)
80 / 8
kN / tons
at 175 bar (continous operation)
60
kN
locating depth: 10-16
m
at 235 bar (intermedium)
80
kN
(depending on
sonde)
Recommended hydraulic power: 40 - 60
ltr/min at 175 – 235 bar
Ideal
starting pit dimensions: 1.30 m long, 1.30 m wide
and 0.3 m deeper than the drill
axle.
Equipped with the Automatic
Drilling and Backreaming System
ADBS.
Hydraulic Power
Unit
TERRA No.: 1930.3000.00
max flow rate:
40
ltr/min
weight:
140
kg
petrol tank :
25
ltr
length:
0.9
m
cooling power:
3.0
kW
width:
0.6
m
max. oil pressure:
175
bar
height:
0.95
m
hydraulic oil tank:
10
ltr
Driven by a 2 cylinder
HONDA engine with 15 kW (20 HP). The engine
control management system checks the oil
level.
Injector mixing & pumping
unit
TERRA No.: 1930.6000.00
drilling fluid volume:
34
ltr/min
weight:
450
kg
drilling fluid pressure:
55
bar
length:
1
m
drilling fluid tank:
600
ltr
width:
1
m
mixing time:
< 5
min
height:
1.9
m
Driven by 2 HONDA engines
with in total 8.7 kW (12 HP).
Special features:
Injector with suction hose
to reeve Bentonit or the biodegradable TERRA
Ejactomer in less than 5 minutes into the
drilling fluid! It sucks water from lakes,
streams or from a pond to fill the 600 liter
drilling fluid
tank.
