A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Detection of Water-Filled and Air-Filled Underground Cavities
Tunnel and cavern detection methods were tested at two experimental sites in Florida. Cross-borehole methods using high-frequency electromagnetic wave diffraction techniques were used over a frequency range of 1 to 100 MHz. A new cross-borehole method using direct current was also used. The experimental sites are karstic. The caverns and tunnels were water-filled at one site and dry at the other site. (ERA citation 81:026420)
Detection of Water-Filled and Air-Filled Underground Cavities
Tunnel and cavern detection methods were tested at two experimental sites in Florida. Cross-borehole methods using high-frequency electromagnetic wave diffraction techniques were used over a frequency range of 1 to 100 MHz. A new cross-borehole method using direct current was also used. The experimental sites are karstic. The caverns and tunnels were water-filled at one site and dry at the other site. (ERA citation 81:026420)
Detection of Water-Filled and Air-Filled Underground Cavities
E. F. Laine (author)
1980
18 pages
Report
No indication
English
Underground openings filled with high-pressure water or air
| Online Contents | 1974
Underground openings filled with high-pressure water or air
| Online Contents | 1974