HDD horizontal drill TERRA-JET DJ 20 drills horizontal and vertical

HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 1
One of Repcon's projects required horizontal HDPE pipes for 17 kV cables and vertical bores for lighting posts. Repcon's Director had choosen his TERRA-JET DJ 20 with vertical option for this project.

Pictures 1: First a road crossing with several existing pipes and cables had to be done. Due to the small bending radius of the TERRA drill rods, this jobsite could be realized successfully.

Pictures 2+3: After the successful pilot bore a reamer OD 160 mm (6”) was assembled, to pull in a HDPE pipe OD 110 mm (4.3”). After only 30 minutes the pipe had been pulled in over a length of 35 m (115 ft).

Picture 4: Then the TERRA-JET DJ 20 was modified for vertical drilling. This modification can be done on the jobsite within 30 minutes.

Picture 5: The TERRA-JET DJ 20 during vertical drilling.

Picture 6: After 1 ½ hours 25 m (80 ft) at been drilled vertically. For the stabilisation of the bore hole ø 100 mm (4“), 100 ltr/min (26 gpm) of Bentonite were pumped into the vertical bore hole.
HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 2
HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 3
HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 4

HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 5
HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 6
HDD horizontal drill TERRA-JET TJ 2808 S drills horizontal and vertical, pic 7

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TERRA AG für Tiefbautechnik - Hauptstrasse 92 - 6260 Reiden - Schweiz - Tel. +41 62 749 10 10 - office@terra-eu.eu