A FREEZING TECHNIQUE FOR GAGE PLACEMENT.
Abstract
A problem exists when gages are to be placed in drill holes below the water table. Freezing the soil around a proposed instrumentation hole was attempted as a solution to the problem. Laboratory and field tests proved that liquid nitrogen would freeze a zone of soil around the supply tube and that an instrumentation hole, drilled into that zone, would remain water-free long enough to allow instrumentation to be placed and the hole to be backfilled. It was concluded that the freezing technique was a solution to the problem of placing gages below a static water level in the soil. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1967
- Accession Number
- AD0821550
Entities
People
- Charles J. Lemont
Organizations
- Air Force Research Laboratory