Sleeve valve pipe grouting device and method based on elastic films

Abstract

The invention relates to the field of grouting curing construction, in particular to a sleeve valve pipe grouting device and method based on elastic films. During use, grout is injected through an outer film grouting taper pipe, no medium exists in an inner elastic film at the moment, the grout flows into a sleeve valve pipe and flows out of a grouting hole, the sleeve valve pipe is sleeved with a layer of an outer elastic film, the outer elastic film expands along with filling of the grout in the sleeve valve pipe, peripheral sludge is pressed, pore water in soil is efficiently squeezed out under expansion of the elastic film, and therefore, the effect of physical reinforcement is achieved; and after grouting is finished, a grouting sealing cover is closed, a second threaded hole in the grouting sealing cover is connected with a water pipe, the water pipe injects clear water into the inner elastic film through an inner film water injection taper pipe while the internal pressure of the sleeve valve pipe is kept, the inner elastic film expands along with filling of the clear water, and residual grout remaining in the sleeve valve pipe is squeezed out, namely, the sleeve valve pipe is filled with the inner elastic film, so that the grouting efficiency is improved, meanwhile, the residual grout in the sleeve valve pipe is completely discharged, and the cleaning effect is achieved.

Description

technical field [0001] The invention relates to the field of grouting and curing construction, in particular to a sleeve valve tube grouting device and a grouting method based on an elastic membrane. Background technique [0002] Sleeve valve pipe grouting is to lower the sleeve valve pipe to the bottom of the hole through the drill hole, and adopt the segmental grouting process to make the grout spread evenly into the rock and soil mass under the grouting pressure. Because sleeve valve pipe grouting can carry out fixed depth, quantitative, fixed degree, fixed section, intermittent and repeated grouting, it has concentrated the advantages of compaction grouting, infiltration grouting and split grouting, and is currently used in soft soil foundations, tunnels It is widely used in projects such as anti-seepage and reinforcement of roadbed and embankment. For example, Patent No. CN202011626491.2 is a kind of sleeve valve tube grouting device and grouting method based on elasti...

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Problems solved by technology

For example, Patent No. CN202011626491.2 is a kind of sleeve valve tube grouting device and grouting method based on elastic film. After the grouting of each hole, the sleeve valve tube needs to be cleaned in time. In order to facilitate the second repeated grouting, the usual practice is to Insert the clean water pipe to the bottom of the sleeve valve pipe, and rinse the slurry in the pipe with clean water until the clean water flows out of the sleeve valve nozzle. This process is complicated and tedious, and the sleeve valve pipe is easily blocked by the slurry and there

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