Geotechnical Bore Holes
Geotechnical Bore Holes
(OP)
This may seem like a basic question, but I would like to get some information on the standard procedures for backfilling bore holes after the completion of the drilling. This is with respect to holes completed for foundation design, which are immediately filled after the test is complete. Are there standards or regulations that apply? We are having drilling done in a public area, and want to ensure that this procedure is done correctly.





RE: Geotechnical Bore Holes
I used to work for SI company in Bahrain. Whenever we completed the boreholes, it was a mandatory to grout the holes using cement grout (mixture cement and water only). This is prescribed by the Water Resources Directorate (WRD) to maintain the aquifer. What we did, 1 bag of cement was mixed with 1 big drum of water and the mixture was pumped from the bottom of the borehole till it reached the ground surface. May this help you.
Regards,
Rendang71
RE: Geotechnical Bore Holes
Grouting is a good idea, but no guarantee that the grout won't settle in the hours after placement (i.e., as you are driving home).
f-d
¡papá gordo ain't no madre flaca!
RE: Geotechnical Bore Holes
Backfill with cuttings up to -3 feet.
Mix two bags of Sacrete and pour in to hole up to -3"
Come back later and pound in cold patch.
Many deep, sloppy holes filled in DC by this method. No settlement.
RE: Geotechnical Bore Holes
In cases where the borehole is collapsing/flowing, I've even grouted to surface, using a bentonite grout.
RE: Geotechnical Bore Holes
Please protect the environment as much as possible.
Cheers