Rapid precipitation construction method for anti-floating anchor rod

Abstract

The invention discloses a rapid precipitation construction method of an anti-floating anchor rod. The rapid precipitation construction method is applied to sandy mudstone with abundant underground fissure water, and comprises the following steps that firstly, earth excavation and manual bottom picking are carried out; then concrete cushion layer pouring is carried out; hole forming operation is preferentially carried out on anchor holes around a serious water gushing part after the pouring is completed; after the hole is formed, a self-sucking pump is put down, water in the formed hole is discharged outwards through the self-sucking pump, and precipitation treatment is carried out on an area with serious water seepage and water gushing; hole forming operation is carried out on the position with serious water gushing after treatment is completed, and an anti-floating anchor rod which is made in advance is put down after hole forming is completed; and then grouting is carried out on the anchor hole, and after grout is solidified, waterproof treatment is carried out on the anti-floating anchor rod. According to the rapid precipitation construction method of the anti-floating anchor rod, existing anchor holes are used for precipitation, the well point precipitation and drainage mode adopted at present is replaced, the well point precipitation and drainage hole forming cost is saved, and the safety of the bearing capacity of a base is guaranteed.

Description

technical field [0001] The invention relates to the technical field of anti-floating anchor rod construction, in particular to a rapid dewatering construction method for an anti-floating anchor rod. Background technique [0002] In the current anti-floating bolt construction of sandy mudstone in my country, due to its superior water-repelling performance, traditional drainage measures such as light well point precipitation, jet well point precipitation, and deep well point precipitation are harmful to sandy mudstone. Fissure water in mudstone has no obvious drainage effect. [0003] In the traditional anti-floating anchor construction, the anti-floating anchor construction is generally carried out first, and then the base cushion construction is carried out. If the effect of reducing and drainage measures is not obvious, when the anti-floating anchor with a high pressure water head forms a hole, there will be The phenomenon of hole formation and water gushing, the surroundin...

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Problems solved by technology

This treatment method will lead to a delay in the construction period and a waste of corresponding artificial materials; and the sandy mudstone as the base has the characteristics of high bearing capacity, but the sandy mudstone is very easy to soften when exposed to water, and the bearing capacity will be reduced rapidly; in addition, the existing technology It is necessary to excavate the dewatering well separately for dewatering, and the cost is high

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