Method of and apparatus for locating disturbances in a mineral seam
US4351035A · kind A · utility
8Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1979 |
| Grant date | Sep 21, 1982 |
| Priority date | — |
| Expiry date | Oct 19, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/55
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Faults in an underground coal seam are located by firing a shot at one point in the seam and detecting the seismic reflections in an array of geophones. Signals from the geophones are recompressed and analyzed according to an exponential formula to give a holograph of the seam and to predict the fault pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.