Polymer bag grouting method for repairing settlement of underground pipelines
US9353888B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2015 |
| Grant date | May 31, 2016 |
| Priority date | — |
| Expiry date | Dec 15, 2035 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F3/06
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A polymer bag grouting method for repairing a settlement of an underground pipeline includes steps of: (1) detecting a settled pipeline section and determining a grouting plan; (2) drilling holes for containing bags; (3) placing the bags into the holes; (4) injecting a polymer material into the bags; (5) uplifting the settled pipeline section; and, (6) filling a cavity and reinforcing a soft soil layer. The polymer material is a non-water reacted two-component polymer material. The method provided by the present invention has advantages of rapidness, small cut, light mass, high tenacity, economy and durability. The method is advanced, highly-efficient, economical and practical and able to rapidly repair the settlement of the pipeline section through uplifting. The method of the present invention is successfully applied to multiple projects of uplifting the underground pipelines, showing great economic and social benefits and a wide development and application prospect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.