Polymer composite grouting method for blocking leaking and sand inrush of underground pipelines
US9777881B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2015 |
| Grant date | Oct 3, 2017 |
| Priority date | — |
| Expiry date | Jan 20, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/175
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A polymer composite grouting method for blocking leaking and sand inrush of underground pipeline includes steps of: (1) determining a leaking and sand inrush position of an underground pipeline; (2) drilling a plurality of grouting holes in a ground surface; (3) placing two grouting pipes into each of the grouting holes, binding a film bag at a bottom of one of the grouting pipes; (4) injecting a polymer grouting material via one of the grouting pipes to form a polymer sand stabilizing body; (5) extruding water to accumulated in the pipeline; (6) installing a plurality of geotextile bags at the pipeline section displacement; (7) injecting the polymer material into the geotextile bags for blocking the leakage; and (8) filling the pumping area out of the pipeline. The present invention provides a practical technical measure to treat the leaking and sand inrush of the underground pipeline under complicated geological condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.