Method and device for identifying full-section excavation parameters of large-section tunnel with broken surrounding rock
US12366679B2 · kind B2 · utility
Assignees
- China Railway Eleventh Bureau Group Co., Ltd
- WUHAN UNIVERSITY OF TECHNOLOGY
- China Railway Eleventh Bureau Group Fourth Engineering Co., Ltd.
- Wujiu Railway Passenger Dedicated Line Hubei Co., Ltd
- Southwest Jiaotong University
- China Railway Seventh Group Co., Ltd.
- Wuhan Institute of Geotechnical Mechanics, Chinese Academy of Sciences
- China Railway Southwest Scientific Research Institute Co., Ltd
Inventors
Key dates
| Filing date | Oct 11, 2024 |
| Grant date | Jul 22, 2025 |
| Priority date | — |
| Expiry date | Oct 11, 2044 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2005/0077
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed are a method and a device for identifying full-section excavation parameters of large-section tunnel with broken surrounding rock, capable of solving the problem of inaccurate arrangement of blasting hole points in tunnel excavation engineering, and including the following steps: establishing a three-dimensional finite element model based on a blasting section design of a tunnel; performing a simulation with the three-dimensional finite element model based on blasting design parameters to obtain blasting quality parameters; selecting a group closest to a preset quality parameter from multiple groups of the blasting design parameters as target blasting design parameters, wherein the preset quality parameter is an acceptance grade standard of the tunnel; obtaining first thermal imaging information of a first hot spot of a surface to be blasted; calibrating actual hole spacing parameters based on the first thermal imaging information and the target blasting design parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.