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MINIMALLY INVASIVE HDD bores
with mini drill rigs

GRUNDOPIT FLUID-ASSISTED MINI BORE RIGS
STEERABLE, COMPACT & VERSATILE

GRUNDOPIT Mini fluid-assisted HDD rigs are used wherever the installation of lines up to 100 m long or the manufacture of house connections demand the steerability of the bore head due to the required bore path. This is the case with bores within existing infrastructures, in restricted spaces, demanding terrains such as slopes and/or heavy soils. House connection service lines can also be installed with the GRUNDOPIT HDD rigs in a steerable manner up to a small pit in front of the building, directly into the building, or the basement and in the opposite direction. This way you can close the gap between non-steerable soil displacement hammers and steerable midi-sized HDD rigs. The versatile models of the GRUNDOPIT series are compact, easy-to-handle mini bore rigs for quickly and economically establishing gas, water, electricity, fibre optic and wastewater house connections as well as parallel installations up to 100 m length. Depending on the soil, a water, water-polymer or Bentonite drilling fluid is used. Depending on the type of bore, pipe diameter, soil type, bore length and degree of difficulty, you can choose between units for pit, shaft or keyhole start.

In the minimally invasive keyhole method with the GRUNDOPIT KS50 horizontal directional drilling machine house connections are installed out of the smallest possible round construction pit (keyhole Ø 65 cm) from the main pipe directly into the house or into a small construction pit in front of the house. All connection work is carried out above ground and the keyhole is then restored with the removed drill core without additional asphalt work or consequential damage.

Advantages of the Grundopit mini drill rigs

  • Compact steerable small drills for pit or keyhole launch
  • Fast and gentle construction of house connections as well as undercrossings and longitudinal bores 
  • The small drilling machines require only minimal excavation pits
  • Application of HDD even in confined spaces and densely built-up areas
  • Flat bores near the surface above existing pipe networks
  • short setup time, fast assembly and disassembly
  • long service life, low wear, high productivity

APPLICATION RANGE of the Grundopit mini drill rigs

  • House connections
    for gas, water, wastewater, power, fibre optics (FTTH) directly out of or into the building without head holes in front of the house
  • Undercrossings
    short bores for data, supply and disposal lines underneath streets, railway embankments, buildings, gardens or other valuable surfaces
  • Longitudinal bores
    for data, supply and disposal lines parallel to streets, waters and buildings up to 100 m length
  • Rock drilling
    by means of a pneumatically driven hammer bore head 

SPECIAL APPLICATIONS of the Grundopit mini drill rigs

  • Bores out of manholes from up to Ø 1 m
  • Bores out of Keyholes from up to Ø 650 mm

FURTHER APPLICATION AREAS
...

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IMPRESSIVE VERSATILITY
PRODUCTS OF THE GRUNDOPIT SERIES

GRUNDOPIT PS40
GRUNDOPIT PS60
GRUNDOPIT KS50

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