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Pilot Tube or Guide Boring Method for Pipe Ramming Guidance With Case Histories

Pilot Tube or Guide Boring Method for Pipe Ramming Guidance With Case Histories. AGENDA. Pipe Ramming Drill Stem Recovery Pipe Removal / Bore Salvage Case Study: EJM Pilot Tube Pipe Ram Pipe Ram Slick Bore Case Study : Slick Bore Case Study: Railroad Culvert Undercrossing Questions.

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Pilot Tube or Guide Boring Method for Pipe Ramming Guidance With Case Histories

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  1. Pilot Tube or Guide Boring Method for Pipe Ramming Guidance With Case Histories

  2. AGENDA • Pipe Ramming • Drill Stem Recovery • Pipe Removal / Bore Salvage • Case Study: EJM Pilot Tube Pipe Ram • Pipe Ram Slick Bore • Case Study: Slick Bore • Case Study: Railroad Culvert Undercrossing • Questions

  3. Pipe Ramming PIPE RAMMING

  4. STANDARD RAMMING • 4-in through 147-in casings • 118-in, 122-in, 138-in & 147-in casings Successfully Rammed • Eliminates Slump or Rise • Tools Configure to a Range of Casing Diameters Pipe Ramming BASICS

  5. THE PROCESS:Typical Pipe Ramming Configuration

  6. ROUTINE 12” Thru 36” CHALLENGING 36” Thru 80” ADVANCED 80” Thru 144”

  7. Pipe Ramming TECHNIQUES DRILL STEM RECOVERY • Rammer Fitted with Special Sleeve • Drill Stem Welded to Back of Sleeve • Percussion Frees Stuck Drill Stem • Push Through or Pull Out

  8. Drill Stem Retrieval

  9. Pipe Ramming TECHNIQUES PIPE REMOVAL/ BORE SALVAGE • Rammer Attached to Product Pipe • Percussion Removes Pipe from Bore • Salvage Job • Bore Again

  10. Product Pipe Removal/Bore Salvage-Job Site

  11. Pipe Ramming CASE STUDY:EJM PILOT TUBE-PIPE RAM

  12. Pipe Ramming CASE STUDIES GBM BACKGROUND • On Grade & Alignment Installation • Highly Accurate Installations • Theodolite Guidance System • Video Monitoring of Illuminated Target • Angled Steering Head Similar to HDD

  13. Pipe Ramming CASE STUDIES GBM BACKGROUND • 1. Pilot Tubes Installed behind Steering Head • 2. Auger Head Tube Sections Installed • As Auger Sections Installed, Pilot Tube Sections Removed at Exit Pit • Pipe Adapter Installed • Product Casing Attached to Adapter • 3. Thrust into Place

  14. Pipe Ramming CASE STUDIES GBM BACKGROUND • Not All Soil Conditions or Pipe DiametersFavorable for total GBM Installation • Pipe Ramming Assist • After Pilot Tubes Installed on Line & Grade • Special Ramming Adapters • Rammer takes place of Auger • Installation remains on Line & Grade

  15. Pipe Ramming CASE STUDIES PROJECT BACKGROUND • EJM Pipe Services- Lino Lakes, MN • Project Location: Chaska, MN • Along the Minnesota River • Spring Thaw • Flood Stage River Levels

  16. Pipe Ramming CASE STUDIES PROJECT BACKGROUND • Sanitary Sewer Main • 36-inch Diameter inside 54-inch Casing • 160 feet in length • New Development • Under Concrete Creek Channel • Creek runs through town • Feeds into MN River

  17. Pipe Ramming CASE STUDIES PROJECT BACKGROUND • Grade Sensitive Project • Avoid slump & disturbance of concrete channel • Unstable, saturated ground conditions • Engineer utilized slump monitoring equip.

  18. Pipe Ramming CASE STUDIES PROJECT SPECS • Began @ 1% Downhill Grade • 4-inch Pilot Tube

  19. Pipe Ramming CASE STUDIES PROJECT SPECS • Installed 4-inch to 24-inch Adapter • Pushed into place

  20. Pipe Ramming CASE STUDIES PROJECT SPECS • Installed 24-inch to 54-inch Adapter • Pushed into place

  21. Pipe Ramming CASE STUDIES PROJECT SPECS • Remove Auger • Weld 54-inch by 20-ft casing to adapter • Set up pipe rammer • Cut out steel bulk head • Loose material & water flow • Sandbags & Underlayment fabric to lessen flow

  22. Pipe Ramming CASE STUDIES PROJECT RESULTS • 1st Section Installed without incident • Next section added and rammed in place • Subsequent casing sections rammed in place

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