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NEW TECHNOLOGIES FOR
NO-DIG LAYING AND
REPLACEMENT OF SERVICESREPLACEMENT OF SERVICES
Kombest Co. Ltd.
Scientific and Engineering Center
Institute of MiningInstitute of Mining
Siberian Branch
The Russian Academy of Sciences
Methods for trenchless replacing the
underground services:
RestorationRestoration
• laying a pipeline of less diameter
Replacement
• removing of pipeline being replaced
continuous destroying by statically dynamic load
Sewer-pipe drain laying and
replacement
No-dig method allows us to lay and replace sewer-pipe
drains with diameters from 100 mm to 200 mm fromdrains with diameters from 100 mm to 200 mm from
buildings and structures under constrained conditions
Trenchless services laying and replacement
Pneumatic striking hammers with special extensions destroying pipeline
being replaced are the basis of equipment
Technology of water-supply system replacement
by no-dig method
pneumatic
winch
compressor
• A set for trenchless replacement includes:
air-suply hosesintake manhole
winch cable
replaced pipeline
service
manhole
polyethylene pipe
pit
anchor
• A set for trenchless replacement includes:
• pneumatic hammer
• expander with destroying device
• pneumatic winch
• anchor
Working pressure of compressed air is 0.6-0.7 MPa
Compressed air consumption (striking unit and winch) is up to 10mᶟ/min
Replacement rate is up to 20 r m/h
Service life is 1.5 - 2 yr
Technology of sewer net replacement by
no-dig method
compressor
• A set for trenchless replacement includes:
air-supply hoses
pneumatic
winchintake manhole
anchor
replaced pipeline
new pipeline
winch
cable service
manholenew pipeline
sections
• A set for trenchless replacement includes:
• pneumatic hammer
• expander with destroying device
• pneumatic winch
• anchor
Working pressure of compressed air is 6-7 atm
Compressed air consumption (striking unit and winch)
is up to 10mᶟ/min
Replacement rate is up to 20 r m/h
Service life is 1.5 - 2 yr
destroying
device
polyethylene pipe
expander pneumatic
hammer
Laying of new pipeline or housing for electric cable
• Driving pilot hole
• Hole reaming
• Pipe or housing laying
polyethylene pipe pneumatic
pilot
hole
winch hole reaming hole reaming with partial
soil compaction
polyethylene pipe pneumatic
hammer
expander with longitudinal
channels
Sewer-pipe drain laying and
replacement
No-dig method allows us to lay and replace sewer-pipe
drains with diameters from 100 mm to 200 mm fromdrains with diameters from 100 mm to 200 mm from
buildings and structures under constrained conditions
Pipe cleaning from soil
A bailer is used to remove soil from a pipe
soil bailer pneumatic
hammer
winch
Set of equipment
Vertical driving of steel pipes
This technology is applied for driving the metal end-bearing piles with
diameters from 150 mm to 600 mm
Cast-in-place pile forming
This technology for forming the cast-in-place piles consists in driving the vertical
holes, their filling with concrete mix, and repeated driving of the hole along this mix
11
Thank you for your attention!
Kombest Company is ready to collaborate with building
companies and enterprises to realize the available equipment
and perform works in the field of no-dig technologies by
qualified specialists
Thank you for your attention!
Kombest Co. Ltd.
Scientific and Engineering Center
Institute of Mining
Siberian Branch
The Russian Academy of Sciences
54, Krasny Prospect
Novosibirsk
Russia
Phone: +7 383 220-77-39
E-mail: natagri@mail.ru
The Russian Academy of Sciences

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технология бестраншейная V.2

  • 1. NEW TECHNOLOGIES FOR NO-DIG LAYING AND REPLACEMENT OF SERVICESREPLACEMENT OF SERVICES Kombest Co. Ltd. Scientific and Engineering Center Institute of MiningInstitute of Mining Siberian Branch The Russian Academy of Sciences
  • 2. Methods for trenchless replacing the underground services: RestorationRestoration • laying a pipeline of less diameter Replacement • removing of pipeline being replaced continuous destroying by statically dynamic load
  • 3. Sewer-pipe drain laying and replacement No-dig method allows us to lay and replace sewer-pipe drains with diameters from 100 mm to 200 mm fromdrains with diameters from 100 mm to 200 mm from buildings and structures under constrained conditions
  • 4. Trenchless services laying and replacement Pneumatic striking hammers with special extensions destroying pipeline being replaced are the basis of equipment
  • 5. Technology of water-supply system replacement by no-dig method pneumatic winch compressor • A set for trenchless replacement includes: air-suply hosesintake manhole winch cable replaced pipeline service manhole polyethylene pipe pit anchor • A set for trenchless replacement includes: • pneumatic hammer • expander with destroying device • pneumatic winch • anchor Working pressure of compressed air is 0.6-0.7 MPa Compressed air consumption (striking unit and winch) is up to 10mᶟ/min Replacement rate is up to 20 r m/h Service life is 1.5 - 2 yr
  • 6. Technology of sewer net replacement by no-dig method compressor • A set for trenchless replacement includes: air-supply hoses pneumatic winchintake manhole anchor replaced pipeline new pipeline winch cable service manholenew pipeline sections • A set for trenchless replacement includes: • pneumatic hammer • expander with destroying device • pneumatic winch • anchor Working pressure of compressed air is 6-7 atm Compressed air consumption (striking unit and winch) is up to 10mᶟ/min Replacement rate is up to 20 r m/h Service life is 1.5 - 2 yr destroying device polyethylene pipe expander pneumatic hammer
  • 7. Laying of new pipeline or housing for electric cable • Driving pilot hole • Hole reaming • Pipe or housing laying polyethylene pipe pneumatic pilot hole winch hole reaming hole reaming with partial soil compaction polyethylene pipe pneumatic hammer expander with longitudinal channels
  • 8. Sewer-pipe drain laying and replacement No-dig method allows us to lay and replace sewer-pipe drains with diameters from 100 mm to 200 mm fromdrains with diameters from 100 mm to 200 mm from buildings and structures under constrained conditions
  • 9. Pipe cleaning from soil A bailer is used to remove soil from a pipe soil bailer pneumatic hammer winch Set of equipment
  • 10. Vertical driving of steel pipes This technology is applied for driving the metal end-bearing piles with diameters from 150 mm to 600 mm
  • 11. Cast-in-place pile forming This technology for forming the cast-in-place piles consists in driving the vertical holes, their filling with concrete mix, and repeated driving of the hole along this mix 11
  • 12. Thank you for your attention! Kombest Company is ready to collaborate with building companies and enterprises to realize the available equipment and perform works in the field of no-dig technologies by qualified specialists Thank you for your attention! Kombest Co. Ltd. Scientific and Engineering Center Institute of Mining Siberian Branch The Russian Academy of Sciences 54, Krasny Prospect Novosibirsk Russia Phone: +7 383 220-77-39 E-mail: natagri@mail.ru The Russian Academy of Sciences