Underground two-fluid grouting device

A dual-liquid grouting and grouting technology, which is used in vertical shaft equipment, wellbore lining, underground chambers, etc., can solve the problems of difficult maintenance and repair, poor grouting effect, complicated pipeline connections, etc., to eliminate the slurry plugging holes. , Good grouting effect

Active Publication Date: 2013-01-02
SHANDONG UNIV
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AI Technical Summary

Problems solved by technology

After the single-liquid cement slurry is injected, it overflows quickly with the water, and the grouting effect is poor
[0003] Some units use double-pipe grouting, that is, two conveying pipelines are used for parallel grouting to achieve the purpose of double-liquid grouting, but the pipeline connection is complicated and difficult to maintain and repair

Method used

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  • Underground two-fluid grouting device
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  • Underground two-fluid grouting device

Examples

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specific Embodiment

[0098] The on-site solidification test of cement-water glass (C-S) two-liquid ratio is described as follows:

[0099] It is difficult to use the traditional two-liquid grouting process in the treatment of water inflow in the second auxiliary road of Xinjulong Mining Co., Ltd. Because the grouting holes for construction are relatively deep (most of the holes are more than 60m), when the traditional two-liquid grouting process is used for grouting, the mixed slurry has not had time to enter the water-conducting fractures in the drilling holes. The phenomenon of solidification occurs, which leads to the plugging accident during grouting. According to the characteristics of water gushing in the second main road, the cement-water glass slurry was selected, and the proportioning test under normal temperature (25℃) was not only carried out on site. The temperature environment was also expanded, the setting time and strength of cement water glass at different temperatures of 35℃ and ...

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Abstract

The invention relates to an underground two-fluid grouting device comprising a grouting inner tube and a grouting outer tube which are nested together, wherein the grouting inner tube and the grouting outer tube are two independent closed pipelines. The grouting inner tube comprises a high-pressure rubber hose joint I, a short tube I, a seal joint, a drill rod and an injector which are sequentially connected, wherein the components are connected to form a closed grouting pipeline, and the short tube I is provided with a check valve I. According to the invention, the drill rod and a drill hole water stopping sleeve are used for being respectively taken as a fluid conveying pipeline, double-tube grouting is realized, depth of a grouting tube in a drill hole is changed for adjusting a position at which two fluids are mixed and the operation time of the mixed fluid in the drill hole, and the aims of adjusting two-fluid solidification time in a deeper drill hole and eliminating a bad result that the drill hole is blocked by the fluid are achieved, so that a better grouting effect is guaranteed.

Description

technical field [0001] The invention relates to a water blocking device applied to the environment of underground mines or tunnels under dynamic water conditions, in particular to an underground double-liquid grouting device. Background technique [0002] At present, it is used for grouting and water blocking after water discharge in mines and transportation, especially when the water outlet channel is short, the water pressure is high, and the flow rate is fast. adjustment, etc. However, at present, the plugging of effluent is generally carried out by using polymer materials or cement slurry and orifice mixing. When the borehole is deep, using the orifice mixing method will make the two slurries mixed in the borehole for a longer distance and longer running time. When the water is blocked in a short water gushing channel, the solidification time of the slurry is often short, and it is difficult to implement double-liquid grouting in a deeper hole because of the depth of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/10
Inventor 李术才潘光明李海燕张庆松韩伟伟张霄刘人太张伟杰王凤刚李志鹏
Owner SHANDONG UNIV
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