Bridge bored pile hole wall opening protection method
The invention discloses a bridge bored pile hole wall opening protection method, which is used for protecting a hole wall opening of a bridge bored pile, which is provided with a sand covering layer and a crushed rock layer. The method comprises the following steps of: a, building a construction pla...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a bridge bored pile hole wall opening protection method, which is used for protecting a hole wall opening of a bridge bored pile, which is provided with a sand covering layer and a crushed rock layer. The method comprises the following steps of: a, building a construction platform; b, inserting a steel casing in the construction platform to make the steel casing embedded in the crushed rock layer; c, arranging a drilling machine on the construction platform, and pre-drilling the steel casing to form pre-bored holes; d, pulling out the drilling machine, and inserting small casings into the pre-bored holes, wherein the small casings are provided with a plurality of stop lever holes and grouting nozzles; e, arranging stop levers in the stop lever holes, and arranging grouting devices on the grouting nozzles; and f, grouting by using the grouting devices, and detaching the grouting devices after the slurry is primarily cured. A mixture of cement and water glass is adopted as a filling mate |
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