Protection method and protection structure of manual hole digging pile argillaceous siltstone stratum

Abstract

The invention provides a protection method and a protection structure of a manual hole digging pile argillaceous siltsone stratum. The protection method of the manual hole digging pile argillaceous siltstaone stratum comprises the steps that a preset position of a to-be-constructed manual hole digging pile is positioned; a plurality of grouting holes having the same depth as that of the preset position are formed at the periphery of the preset position; and mortar is injected into the grouting holes, and thus a protection pile is formed. The invention conducts treatment on the surrounding argillaceous siltstone of the pile by adopting a method that mortar is grouted surrounding the manual hole digging pile, and accordingly the water stopping and foundation treatment effects are achieved. Step flow construction can be conducted in batches in the grouting process, the working efficiency is improved, and the construction period is ensured. The water permeability of argillaceous siltstoneis relatively low before being disturbed, the water stopping effect can be achieved by just injecting a small amount of mortar after grouting treatment is conducted, and the cost is low. The protection method solves the problem that a traditional steel protection cylinder is hard to press in and easy to tilt in the sinking process, and meanwhile the problem of hole collapse caused by a traditionalconcrete protection wall is avoided.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a protective method and protective structure for artificial hole-digging pile muddy siltstone geology. Background technique [0002] At present, in the construction of manual excavated piles in China, when encountering quicksand geology, steel casings are generally used for wall protection or cast-in-place reinforced concrete wall protection is still used, but the digging speed is slowed down and the height of single-stage wall protection is shortened to prevent quality and safety accidents caused by hole collapse. This kind of traditional method mainly has the following problems: when the argillaceous siltstone is not disturbed, the strength is high, and the steel casing is difficult to press in; when it encounters water or is disturbed, the strength drops sharply and turns into quicksand. It is easy to collapse the hole, and if the caisson principle is used to mak...

AI Technical Summary

Problems solved by technology

[0004] In order to provide a more effective protection scheme for manual digging piles and solve the problems of easy hole collapse and inclination in the prior art, the present invention provides a protection method and protection method for manual digging piles in muddy siltstone geology. structure

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