Method for dewatering coal mine goaf by crossing neighboring goaf
US12146410B1 · kind B1 · utility
Assignees
Inventors
Key dates
| Filing date | Apr 16, 2024 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Apr 16, 2044 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21F7/00
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for dewatering a coal mine goaf by crossing a neighboring goaf is applicable to a scenario including a first goaf, a second goaf, and a third goaf located sequentially at one side of a roadway. A directional hole mechanism is provided between the roadway and the second goaf as well as between the roadway and the third goaf. The directional hole mechanism passes through a coal seam floor at a bottom of the goaf and is communicated to the second goaf and the third goaf. The directional hole includes a first directional hole and a second directional hole. The first directional hole is communicated to the second goaf, the second directional hole is communicated to the third goaf, and the first directional hole is provided with a casing structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.