Process for the high-pressure grouting within the earth and apparatus adapted for carrying out same
US4084648A · kind A · utility
28Cited by
8References
7Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Feb 11, 1977 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Feb 11, 1997 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B33/13
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
This invention concerns with a high pressure grouting process. For lateral cutting of earth in the ground, a high speed core water jet, having its injection velocity equal to at least a half of the sonic one and surrounded by an air ring jet is used. For solidifying the crushed earth, a cement milk is used which is poured separately and at a lower level than that of the air-water combined jet into the space in the ground which space has been formed by the action of the core water jet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.