Polymer bag grouting method for repairing settlement of underground pipelines
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United States of America Patent
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May 31, 2016
Grant Date -
Apr 14, 2016
app pub date -
Dec 15, 2015
filing date -
Feb 9, 2015
priority date (Note) -
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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.
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