A simple and quick method for plugging formation dynamic water and pores

Abstract

The invention provides a method for conveniently and rapidly blocking stratum flowing water and pores. Acrylic silk wadding is used to form a filter screen for emitted water, subsequently, polyurethane slurries in different prescriptions are injected into water passages and acted with water to rapidly foam to form polyurethane foams, under the chemical combination and physical mixing effect generated at the position of the acrylic silk wadding, and the acrylic silk wadding rapidly forms an elastic rubber plug structure to block various water passages, cracks and water flows. According to the needle injection type grouting method, burying and blocking grouting steel tube processes in grouting construction are omitted, grouting work efficiency is improved, and construction difficulties in grouting and plugging of flowing water are reduced; reasonable drilling and water diversion solutions are used, and grouting prescriptions and grouting backfilling processes are reasonably deployed, so that grouting slurries seep into deeper places of a stratum along water flow passages to block water flows, and better water blocking effects are achieved.

Description

technical field [0001] The invention relates to the technology of sealing stratum dynamic water and the rapid plugging technology of general grouting holes and fissures. It is suitable for geological engineering construction such as stratum dynamic water sealing, stratum grouting densification, reinforcement and filling, etc., and has excellent effect. Background technique [0002] In geological engineering, it is very difficult to block the flowing water in the formation, so the engineering design adopts the pre-grouting measures that require large investment, time-consuming, and large drilling and grouting works—that is, pre-grouting is carried out under the condition of static water in the formation Or the measures of advanced grouting, the early grouting measures can effectively improve the phenomenon of formation water leakage, but it can not completely solve the problem of formation water leakage, and the formation after excavation still needs to be studied when there i...

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Problems solved by technology

In engineering, this method has a series of problems: ① It is difficult to block and consolidate the water-emitting channels around the grouted steel pipe; ② The cost of the grouted steel pipe is high, and it can only be used for one time with one hole and one pipe, and the waste of the grouted steel pipe is huge ; ③ The grouting material (cement, etc.) is easily lost by the flushing of water, and cannot be solidified and agglomerated; ④ Although the commonly used cement-sodium silicate double-liquid grouting has rapid solidification and has a certain anti-water washing effect, the grout of this method The setting time is difficult to control, the grouting process is cumbersome, the grouting effect is difficult to control, and the stability of the stone body is poor;

Carry out directional diversion and drainage near the water inrush point, so that the static water condition becomes a micro-moving water condition, guide the fine aggregate and slurry to flow slowly through the water channel, and gradually block it to achieve the purpose of improving the effect of grouting water blocking and overcome Eliminate the waste of slurry caused by the diffusion of slurry along the larger fracture channel and the formation of new fracturing fractures along the narrow fracture or weak zone, destroying the original water-proof effect

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