Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

jack & bore in alluvium

Status
Not open for further replies.

RockChick

Geotechnical
Joined
Jan 25, 2012
Messages
7
Location
US
I am doing the geotech for a water/sanitation agency project involving a jack and bore of a new main sewer line under a creek. its a narrow channel but their planned bore path has only 8 feet of planned cover which will still be within the modern alluvium at the center of the channel. are there any mitigation measures to avoid caving in the narrow patch of alluvium besides increasing the depth of cover?
 
Also, the bore path is below the water table, it is an active creek. So I don't know if things like chemical grouting would work.
 
thanks. i will look into that! would have to find out how disruptive the hammer blows would be to the alluvium standing in the banks.
 
Also, there is a trade show/seminar in Nashville in March, NO-Dig 2012. This is sponsored by NASTT. Lots of vendors and info on trenchless methods of rehab and new construction.

Richard A. Cornelius, P.E.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top