Method and system for blast-induced vibration monitoring of tunnels in high asymmetric in-situ stresses
US11982596B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 25, 2022 |
| Grant date | May 14, 2024 |
| Priority date | — |
| Expiry date | Nov 25, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention provides a method and system for a blast-induced vibration monitoring of a tunnel in high asymmetric in-situ stresses. According to the method, triaxial vibration sensors are respectively fixed in areas having different radial depths inside surrounding rocks of a stress concentration area behind a tunnel face of the tunnel in high asymmetric in-situ stresses, and each triaxial vibration sensor monitors blast vibration velocity and acceleration at a position thereof. The system comprises a plurality of triaxial vibration sensors which are fixed in areas having different radial depths inside surrounding rocks of a stress concentration area behind a tunnel face of the tunnel in high asymmetric in-situ stresses, and each triaxial vibration sensor is used for monitoring blast vibration velocity and acceleration at a position thereof. The method and system can improve the safety and the efficiency of tunnel excavation construction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.