Equipment and method forecasting tunnel water inrush using magnetic resonance differential
US9638779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2012 |
| Grant date | May 2, 2017 |
| Priority date | — |
| Expiry date | Dec 19, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V9/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An equipment and method for forecasting tunnel water inrush using a magnetic resonance differential, where a computer is connected to a transmitting bridge circuit through a high voltage power supply, to a control unit, a first and second signal modulating circuits and a multi-channel collecting circuit; the control unit is connected to a transmitting driver circuit, a first and second protection switches, and the transmitting bridge circuit through the transmitting driver circuit; two ends of a transceiving multi-turn coil are connected to the multi-channel collecting circuit through the first and second protection switches; two ends of a receiving multi-turn coil are connected to the multi-channel collecting circuit through the second protection switch and the second signal modulating circuit; one end of the transceiving multi-turn coil is connected to the transmitting bridge circuit, and the other end is connected to the transmitting bridge circuit through a resonant capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.