Rapid construction method of pipe jacking for underground rescue tunnel with large section
US11008861B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2020 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Sep 24, 2040 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21D9/112
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A rapid construction method of pipe jacking for underground rescue tunnel with large section is disclosed. The present invention realizes rock breaking through the cutting head of a roadheader cutting unit, and pushes pipe jacking forward through a pushing thruster. During the process, a protecting bush fixedly connected with a stretchable part is adopted for circumferential support; and since the cutting head and the protecting bush occupy the rock breaking space, and the pushing thruster pushes pipe jacking forward to push the coal rock in the annular space to the circumferential direction, the effect of moving forward without slag discharge can be achieved. The present invention can establish a rescue tunnel quickly and effectively, which saves rescue time and greatly reduces the threat to the life safety of trapped people. The present invention can establish a fast and safe underground rescue tunnel with large section for the rescue of people.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.