A rapid construction method for deep overburden grouting

Abstract

The invention discloses a quick constructing method for thick blanket grouting. The quick constructing method comprises the following steps that follow-pipe drilling once drilling operation is alternatively carried out through at least two drilling tools, an operating hole surrounded by lowered follow pipes is formed, and thick blanket grouting can be carried out through the operating hole; hole opening locators are arranged at end openings of the follow pipes at the hole opening position of the operating hole, and the hole opening locators are used for locating sections of sleeving valve tubes in the operating hole to the center of the operating hole; the sections of the sleeving valve tubes can be sequentially arranged in the operating holes in a sectional manner and in a manner parallel to the follow pipes through the hole opening locators; sleeving casing sizing agent is grouted into annular gaps between the sections of the sleeving valve tubes and the follow pipes until the sleeving casing sizing agent overflows out of the hole opening; and the follow pipes are quickly taken out of drilled holes after a period that the grouted sleeving casing sizing agent congeals, and grouting operation is carried out. According to the quick constructing method for the thick blanket grouting, the constructing efficiency is greatly improved, the constructing quality is effectively guaranteed, the constructing cost is reduced, and the successful accomplishment of a project is guaranteed.

Description

technical field [0001] The invention relates to the field of mobile stages, in particular to a rapid construction method for grouting a deep covering layer. Background technique [0002] Overburden foundation treatment is usually carried out by drilling and grouting, which is widely used in water conservancy and hydropower projects, urban rail transit projects, municipal public utilities and other projects. There are many processes in the grouting construction process, and the construction progress and construction quality of each process are closely related to the construction progress and construction quality of the entire project, and even the construction cost. At present, after the completion of the follow-up drilling process, the verticality of the lower casing valve pipe is only achieved by manual measurement during the whole process of the lower casing valve pipe entering the operation hole until the casing slurry is poured, which has the following disadvantages: 1....

AI Technical Summary

Problems solved by technology

At present, after the completion of the follow-up drilling process, the verticality of the lower casing valve pipe is only achieved by manual measurement during the whole process of the lower casing valve pipe entering the operation hole until the casing slurry is poured, which has the following disadvantages: 1. The casing valve pipe is easily deflected during the installation process, and the deviation cannot be corrected quickly, which will affect the construction progress; 2. If the deviation is not corrected completely, the subsequent casing slurry will be poured unevenly, which will affect the grouting effect; 3. If the deviation is not corrected Success, can only redo the entire construction process

[0003] In addition, at present, the lifting and pulling of the heel pipe is carried out after the filling of the casing slurry is completed and before it solidifies. Subsequent grouting quality

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