A kind of grouting construction technology using gin grouting method

Abstract

The invention relates to a grouting construction process using a GIN grouting method. The method comprises the steps of forming a hole to be grouted, cleaning the hole to be grouted, surveying the hole to be grouted, uniformly dividing a grouting section into a plurality of grouting subdivisions according to a survey result, installing a grouting construction control system, grouting the hole to be grouted through the grouting construction system, controlling the grouting pressure, when each grouting time threshold is reached, adding a grouting pressure increment on the basis of an original grouting pressure to continue grouting, and when the grouting pressure reaches the preset grouting pressure threshold, ending the grouting; by using the technical scheme of the process, the grouting strength value GIN of each grouting subdivision section is controlled by a computer, so that the grouting strength value GIN of the whole hole to be grouted in the grouting process is kept constant, anda perfusion flow rate and a perfusion pressure are always matched, the quality of the grouting construction operation is improved, and the process has the advantages that the construction process is simple, the work efficiency is high, the anti-seepage effect is good and the like.

Description

technical field [0001] The invention belongs to the field of building construction, in particular to a grouting construction process using the GIN grouting method. Background technique [0002] The GIN grouting method was proposed by Swiss grouting experts Lombardi and others in 1993. The GIN grouting method analyzes the grouting problem from the perspective of energy loss. According to the GIN grouting method theory, a certain amount of energy must be consumed to grout the rock mass or soil mass The grouting energy consumed on the unit hole section is defined as the grouting intensity value GIN, which is expressed by the product of the final grouting pressure P (MPa) of the grouting hole section and the final grouting volume V (L / m) of the unit grouting section, namely: [0003] GIN=P·V(MPa·L / m) [0004] It can be seen from the above formula that the final grouting pressure P (MPa) is inversely proportional to the grouting volume V (L / m) per unit grouting section. During t...

AI Technical Summary

Problems solved by technology

The GIN grouting method has the advantages of fast construction speed, material saving, good grouting effect, and simple construction. However, in construction engineering practice, it is very difficult to keep the grouting strength value GIN constant. If the concrete grout with poor stability is used, then It is easy to affect the construction quality, and it is easy to cause water seepage in the pouring hole

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