Combined rock-breaking TBM tunneling method in complex strata for realizing three-way force detection
US11486249B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 1, 2020 |
| Grant date | Nov 1, 2022 |
| Priority date | — |
| Expiry date | Dec 17, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/106
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Disclosed a combined rock-breaking TBM tunneling method in complex strata for realizing three-way force detection, comprising the steps of preparing a combined mechanical-hydraulic rock-breaking cutter head for TBM construction; starting construction; advancing the combined mechanical-hydraulic rock-breaking cutter head; pushing and pressing against a tunnel face by a mechanical cutter tool; subjecting a three-way force detection cutter to squeezing forces; feeding back three-way force data by a three-way force sensor; processing information by a TBM back-end control processor; obtaining a value of rock-cutter contact angle φ; feeding back parameter information to a TBM cutter head control center by a lithology index center; responding by the TBM cutter head control center, obtaining and adjusting parameters by the mechanical cutter tool equipped with the three-way force sensor; and breaking rock by the combined mechanical-hydraulic rock-breaking cutter head. The method disclosed is energy-saving and efficient, and has high rock-breaking efficiency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.